define dataset column for timestamp data type in MS SQL server

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  - 1
    - Problem Connecting To Access Database I created some very simple ASP.NET applications - form data is entered into an Access database. There are 4 of these apps - all similar in nature and even connect to the same database just different tables via stored queries. All of the apps were working fine on the web server. Then I recently noticed that a few all of the sudden stopped working. I checked thru the code on my local machine - where I originally created them, but didn't see any differences between the ones that worked and the ones that didn't. However when I attempted to run in debug mode on my local system I started receiving the same error message for all of them. If I rebuild and copy back to the server some of them run fine, while others still do not. - there doesn't seem to be an rhyme or reason. Here is the error message I receive for one that works on the web server, but not locally. Exception Details: System.Data.OleDb.OleDbException: No error information available: REGDB_E_CLASSNOTREG(0x80040154). Source Error: Line 90: // try Line 91: //{ Line 92: oleHr.Open(); Line 93: oleInsert.Parameters["firstName"].Value = txtFirstName.Text; Line 94: oleInsert.Parameters["lastName"].Value = txtLastName.Text; Source File: c:\inetpub\wwwroot\con020\default.aspx.cs Line: 92 Stack Trace: [OleDbException (0x80040154): No error information available: REGDB_E_CLASSNOTREG(0x80040154).] [InvalidOperationException: The 'Microsoft.Jet.OLEDB.4.0' provider is not registered on the local machine.] System.Data.OleDb.OleDbConnection.CreateProviderError(Int32 hr) System.Data.OleDb.OleDbConnection.CreateProvider(OleDbConnectionString constr) System.Data.OleDb.OleDbConnection.Open() con020.WebForm1.cmdSign_Click(Object sender, EventArgs e) in c:\inetpub\ wwwroot\con020\default.aspx.cs:92 System.Web.UI.WebControls.Button.OnClick(EventArgs e) System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler. RaisePostBackEvent(String eventArgument) System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) System.Web.UI.Page.ProcessRequestMain() +1292 Does anyone know what could be causing this inconsistent behavior? -- Message posted via DotNetMonster.com http://www.dotnetmonster.com/Uwe/Forums.aspx/dotnet-ado-net/200511/1 Tag: define dataset column for timestamp data type in MS SQL server Tag: 121475
  - 2
    - ADO.net is giving me the WRONG date here... I have a table with a datetime column. Then, in my C# program I open a datatable with that column in it and access it with the following syntax: dt.rows[i]["datefield"] Now, when I look at the data in the table from say Enterprise Manager, the row in question has an "11/17/2005 8:15:29 am" in it. But, my ado.net code yields a "11/17/2005 8:15:28 am". This isn't for all the rows in the datatable, only a few. Is there some sort of "conversion" that goes on between .net and SQL Server? Is there some rounding going on? Any help would be much appreciated. Tag: define dataset column for timestamp data type in MS SQL server Tag: 121474
  - 3
    - Nasty DataView bug Hi, everyone, I ran into a serious bug upgrading to VS2005, and very easy to reproduce. It goes like this: 1. Filter a DataView 2. Get a reference to a DataRowView 3. Clear the filter - the reference to the DataRowView has changed to a completely different row! This is not a problem in .NET 1.1 - only in 2.0. The code to reproduce the problem is below. Please help! Thanks, Bob L. Dim oTable As DataTable Dim oView As DataView Dim oRowView As DataRowView 'Build simple table oTable = New DataTable oTable.Columns.Add("ID", GetType(Integer)) oTable.Rows.Add(New Object() {12}) oTable.Rows.Add(New Object() {25}) 'Construct & filter DataView oView = New DataView(oTable) oView.RowFilter = "ID=25" 'Get a reference to the found item and display the ID oRowView = oView.Item(0) MsgBox(oRowView.Item(0)) 'ID = 25 oView.RowFilter = "" 'Show the same ID again 'In 1.1 this line of code still shows 25 - correct. 'In 2.0 it shows 12 - wrong! MsgBox(oRowView.Item(0)) Tag: define dataset column for timestamp data type in MS SQL server Tag: 121473
  - 4
    - Serviced Component, Excel and OleDbConnection.Open I'm using the OleDbConnection object to retrieve the contents of an Excel Worksheet as a DataSet. This works fine when testing the MyExcel.GetMonthly() method call. When I call MyExcel.GetMonthly() from a Serviced Component, it bombs. Code snippet: OleDbConnection cn = new OleDbConnection(CnString); cn.Open(); <-- Error occurs here In an effort to isolate the problem I created a new class and called MyExcel.GetMonthly() from it. Without ServicedComponent inheritence it works fine. With ServicedComponent inheritence it crashes with: A condition has occurred that indicates this COM+ application is in an unstable state or is not functioning correctly. Assertion Failure: !m_punk Server Application ID: {6E4E5709-D807-46DD-819E-2B3D150FC547} Server Application Instance ID: {C73018C7-1BB0-4DB2-A9DB-4D9E22521507} Server Application Name: MSRBLL The serious nature of this error has caused the process to terminate. COM+ Services Internals Information: File: d:\qxp_slp\com\com1x\src\comsvcs\jit\jit.cpp, Line: 858 Comsvcs.dll file version: ENU 2001.12.4414.258 shp Any thoughts? Tag: define dataset column for timestamp data type in MS SQL server Tag: 121472
  - 5
    - DataTable.Load() fills in schema!! Hi there, I was loading a datatable with Dataadapter's Fill() method. Then, I could add a new record to the datatable and it won't complain about not null columns until I called the Dataadapter's Update() method. That's OK for me. Now I am experimenting with the Load() method of a datatable (.NET 2.0) to fill it from a datareader, but as soon as I add a new row, I get an exception from the datatable complaining about the not null columns. Is there a way to avoid that? Best Regards, -Benton Tag: define dataset column for timestamp data type in MS SQL server Tag: 121469
  - 6
    - WITH NOWAIT And SqlConnection's InfoMessage Is there any possible way to get messages asynchronously sent from a stored procedure running on SQL Server 2000, back to ADO.Net, in realtime (or at least somewhat close to it)? After much experimenting, I am left to say "no"... it is not possible. Although it would appear it should be. On SQL Server, the RAISERROR command has an available "WITH NOWAIT" option. According to the documentation, this "sends messages immediately to the client". This, combined with the SqlConnection object's InfoMessage event, should theoretically allow one to receive these messages asynchronously, while the proc is executing. I assume this doesn't work because ExecuteNonQuery does not fire this event until after it (and thus the stored procedure) has completed. Here's some sample code... first my stored proc: RAISERROR('1',10,1) WITH NOWAIT RAISERROR('2',10,1) WITH NOWAIT RAISERROR('3',10,1) WITH NOWAIT And the C# code: private void RunProc() { this.listBox1.Items.Add("Proc started..."); try { this.sqlConnection1.Open(); this.sqlCommand1.ExecuteNonQuery(); } finally { this.sqlConnection1.Close(); } this.listBox1.Items.Add("Proc complete..."); } private void sqlConnection1_InfoMessage(object sender, System.Data.SqlClient.SqlInfoMessageEventArgs e) { this.listBox1.Items.Add(e.Message); } Tag: define dataset column for timestamp data type in MS SQL server Tag: 121467
  - 7
    - Why am I getting ForeignKeyConstraint requires child key value error? Hello, Here is the error message; ---------------------------- Exception Message: ForeignKeyConstraint Lkp_tbl040Cmpt_lkp302SensorType requires the child key values (5) to exist in the parent table. ---------------------------- I am encountering this error when I try to insert records into table 'tbl040Cmpt' using the DataSet1.Tables("Table").Rows.Add(row) The relevant data structure goes like this the table 'tbl040Cmpt' contains a field that stores the value from lookup table 'lkp302SensorType'. Here is the relationship that exists in the Dataset; \\ Me.Relations.Add("Lkp_tbl040Cmpt_lkp302SensorType", Me.Tables("lkp302SensorType").Columns("pkSensorTypeId"), Me.Tables("tbl040Cmpt").Columns("cmSmallint06")) // Here is the 'lkp302SensorType' lookup table; \\ CREATE TABLE [lkp302SensorType] ( [pkSensorTypeId] [smallint] IDENTITY (1, 1) NOT NULL , [SensorType] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL , [Ord] [tinyint] NOT NULL CONSTRAINT [DF_lkp302SensorType_Ord] DEFAULT (0), [Hide] [bit] NOT NULL CONSTRAINT [DF_lkp302SensorType_Hide] DEFAULT (0), CONSTRAINT [PK_lkp302SensorType] PRIMARY KEY CLUSTERED ( [pkSensorTypeId] ) WITH FILLFACTOR = 90 ON [PRIMARY] ) ON [PRIMARY] GO // Here are table 'tbl040Cmpt' \\ CREATE TABLE [tbl040Cmpt] ( [pkComponentId] [char] (36) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL CONSTRAINT [DF_tbl040Cmpt_pkComponentId] DEFAULT (newid()), [fkDevice] [char] (36) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL , [fkComponentType] [int] NOT NULL , [ComponentDescription] [varchar] (100) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL , [QuanSharingConfiguration] [tinyint] NOT NULL , [QuanConfigured] [tinyint] NOT NULL CONSTRAINT [DF_tbl040Cmpt_QuanConfigured] DEFAULT (0), [QuanActuations] [tinyint] NOT NULL CONSTRAINT [DF_tbl040Cmpt_QuanActuations] DEFAULT (1), [cmVarchar01] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL , [cmVarchar02] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL , [cmVarchar03] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL , [cmVarchar04] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL , [cmVarchar05] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL , [cmVarchar06] [varchar] (50) COLLATE SQL_Latin1_General_CP1_CI_AS NULL , [cmNumeric01] [numeric](5, 3) NULL , [cmNumeric02] [numeric](5, 3) NULL , [cmNumeric03] [numeric](5, 3) NULL , [cmNumeric04] [numeric](5, 3) NULL , [cmNumeric05] [numeric](5, 3) NULL , [cmNumeric06] [numeric](5, 3) NULL , [cmNumeric07] [numeric](5, 3) NULL , [cmBit01] [bit] NULL , [cmBit02] [bit] NULL , [cmBit03] [bit] NULL , [cmBit04] [bit] NULL , [cmBit05] [bit] NULL , [cmBit06] [bit] NULL , [cmBit07] [bit] NULL , [cmBit08] [bit] NULL , [cmBit09] [bit] NULL , [cmBit10] [bit] NULL , [cmBit11] [bit] NULL , [cmSmallint01] [smallint] NULL , [cmSmallint02] [smallint] NULL , [cmSmallint03] [smallint] NULL , [cmSmallint04] [smallint] NULL , [cmSmallint05] [smallint] NULL , [cmSmallint06] [smallint] NULL , [cmSmallint07] [smallint] NULL , [cmSmallint08] [smallint] NULL , [cmTinyint01] [tinyint] NULL , [SooOrder] [numeric](5, 3) NULL , [SooPrecedent] [numeric](5, 3) NULL , [SooDelay] [numeric](5, 3) NULL , [SooNote] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NULL , [cmUserNote] [varchar] (255) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL , [cmCreatedOn] [smalldatetime] NOT NULL , [cmCreatedBy] [varchar] (25) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL , [cmEditedOn] [smalldatetime] NOT NULL , [cmEditedBy] [varchar] (25) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL , [cmrowversion] [timestamp] NOT NULL , CONSTRAINT [PK_tbl040Cmpt] PRIMARY KEY CLUSTERED ( [pkComponentId] ) WITH FILLFACTOR = 90 ON [PRIMARY] , CONSTRAINT [FK_tbl040Cmpt_lkp202ComponentType] FOREIGN KEY ( [fkComponentType] ) REFERENCES [lkp202ComponentType] ( [pkComponentTypeId] ), CONSTRAINT [FK_tbl040Cmpt_tbl030Devi] FOREIGN KEY ( [fkDevice] ) REFERENCES [tbl030Devi] ( [pkDeviceId] ) ON DELETE CASCADE NOT FOR REPLICATION ) ON [PRIMARY] GO // Here is selected code that causes the error' \\ Private Sub InsertCylnSensor(ByVal s As String) 'Create a data row (collection of fields) Dim row As DataRow = _dataSet1.Tables(_currentTable).NewRow 'MessageBox.Show("Insert is called for: " & s) Try ' Data entered automatically row("pkComponentId") = Guid.NewGuid.ToString 'row("fkDevice") = _pkDeviceIdForFkAndParameter row("fkDevice") = f030Devi._pkDeviceIdForFkAndParameter row("fkComponentType") = 7 'Motion sensor ' ClipDriver - Clip Driver_1 Sensor_1 _ A(??) row("ComponentDescription") = _ Me.txtComponentDescription.Text.ToString & _ " - " & _componentTypeNameForTitleAndCmptDescrip & "_" & s row("QuanSharingConfiguration") = 1 row("QuanConfigured") = "0" 'This will be populated OnSave after user enters data 'TODO - f041Cyln - InsertCylnSensor - QuanActuations - 'Propagate this on to the sensors ~ is this really necessary row("QuanActuations") = _quanOfComponentActuations 'Propagate this on to the sensors 'TODO - f041Cyln - InsertCylnSensor - row("cmVarchar04") = "On" row("cmVarchar04") = "On" row("cmVarchar06") = _pkCmptIdOfParentForSensorAndParameter 'Give all other positions a FALSE value and only the proper position a TRUE value ' This allows proper filtering row("cmBit01") = False 'B row("cmBit02") = False 'D row("cmBit04") = False 'C row("cmBit05") = False 'A Select Case s Case "B" row("cmBit01") = True 'B Case "D" row("cmBit02") = True 'D Case "C" row("cmBit04") = True 'C Case "A" row("cmBit05") = True 'A End Select row("cmBit06") = True 'PNP NON row("cmBit07") = True 'is Motion sensor row("cmSmallint01") = 1 'Me.cboSensorVoltage.NSelectedValue ~ (1 = 24 volt) 'cmSmallint02 'cmSmallint03 'cmSmallint04 'cmSmallint05 row("cmSmallint06") = 5 'Me.cboSensorType.NSelectedValue ~ (5 = Hall effect) 'cmSmallint07 row("cmSmallint08") = 2 'Me.cboSensorConnection.NSelectedValue ~ (2 = Micro) row("cmUserNote") = "" row("cmCreatedOn") = Now.ToString row("cmCreatedBy") = SystemInformation.UserName.ToString row("cmEditedOn") = Now.ToString row("cmEditedBy") = SystemInformation.UserName.ToString ' The following data is entered by the user - later 'row("cmVarchar01") = ucase(Me.txtSensorIOAddress.Text) ' The following data is confirmed by the user - later 'row("cmBit06") = True 'PNP NON Catch ane As ArgumentNullException 'The exception that is thrown when a null reference (Nothing in Visual Basic) is passed to a method that does 'not accept it as a valid argument. Throw New DBAccessException("You are passing a 'Nothing' as a parameter to a method where an actual value is required.", ane) Catch ce As ConstraintException 'Represents the exception that is thrown when attempting an action that violates a constraint. Throw New DBAccessException("You have attempted an action that violates a constraint.", ce) Catch e As Exception 'Represents errors that occur during application execution. Throw New DBAccessException("An unanticipated exception has ocurred.", e) End Try Try _dataSet1.Tables(_currentTable).Rows.Add(row) '<<<This line causes the error Catch diee As Data.InvalidExpressionException 'Represents the exception that is thrown when attempting to add a DataColumn Throw New DBAccessException("The data column you are attempting to add contains an error.", diee) Catch dsee As SyntaxErrorException 'Represents the exception that is thrown when the Expression property of a DataColumn contains a syntax error. Throw New DBAccessException("The data column you are attempting to add contains a syntax error.", dsee) Catch e As Exception MessageBox.Show("Exception Message: " & vbCrLf & e.Message) MessageBox.Show("Exception Source: " & vbCrLf & e.Source) MessageBox.Show("Exception StackTrace: " & vbCrLf & e.StackTrace) 'Represents errors that occur during application execution. 'Throw New DBAccessException("An unanticipated exception has ocurred.", e) End Try End Sub // The error says ForeignKeyConstraint Lkp_tbl040Cmpt_lkp302SensorType requires the child key values (5) to exist in the parent table. The "5" is the value that is given to the field cmSmallint06 in the line shown here; \\ row("cmSmallint06") = 5 'Me.cboSensorType.NSelectedValue ~ (5 = Hall effect) // I don't understand why I am getting this error when I am passing the required value. Can someone explain what might be casusing this? (5 = Hall effect) Please help me. Thank you, dbuchanan Tag: define dataset column for timestamp data type in MS SQL server Tag: 121465
  - 8
    - Dtabinding and Update issues This is a multi-part message in MIME format. ------=_NextPart_000_0074_01C5F40F.2ADFBD40 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi All, I have a typed dataset which contains several tables. The 3 that I am = experiencing difficulty with are "CONTACTS", "ALL_ZIP_CODES" and = "E_ZIP_CODES." The "CONTACTS" table is selfexplantory. The table = "E_ZIP_CODES" is a subset of all ZIP codes that are in the "CONTACTS" = table. The table "ALL_ZIP_CODES" consists of a complete listing of ZIP = codes. What I am trying to do is, when a user updates or adds a new contact, I = search for the ZIP code in the "E_ZIP_CODES" table (dvSearch below). If = the ZIP code is not in the table "E_ZIP_CODES" (i =3D -1 below), I want = to add the ZIP code and city values from the "ALL_ZIP_CODES" datatable = to the datatable "E_ZIP_CODES" so that I can update the "CONTACTS" table = with the newly selected ZIP code. The new record is added to the = datatable and all appears to be fine. However, when I try to update the = "CONTACTS" datatable, I get the error "Failed to enable constraints" TIA, Vince ' Code to add new ZIP code Dim dv As New DataView Dim strSearch As String, i As Integer With dv .Table =3D dsMulti.Tables("ALL_ZIP_CODES") .Sort =3D "ZIP_CODE" .RowStateFilter =3D DataViewRowState.CurrentRows End With =20 strSearch =3D cboE_ZIP_Code.Text.ToString If strSearch =3D "" Then strSearch =3D txtE_ZIP_Code.Text.ToString Try Dim dvSearch As New DataView With dvSearch .Table =3D dsMulti.Tables("E_ZIP_CODES") .Sort =3D "ZIP_CODE" .RowStateFilter =3D DataViewRowState.CurrentRows End With i =3D dvSearch.Find(strSearch) If i =3D -1 Then Dim strCity As String With dv .Table =3D dsMulti.Tables("ALL_ZIP_CODES") .Sort =3D "ZIP_CODE" .RowStateFilter =3D DataViewRowState.CurrentRows End With i =3D dv.Find(strSearch) strCity =3D "Test" Dim rowNew As DataRow rowNew =3D dsMulti.Tables("E_ZIP_CODES").NewRow rowNew("ZIP_CODE") =3D strSearch rowNew("CITY") =3D strCity dsMulti.Tables("E_ZIP_CODES").NewRow.BeginEdit() dsMulti.Tables("E_ZIP_CODES").Rows.Add(rowNew) dsMulti.Tables("E_ZIP_CODES").AcceptChanges() End If Catch ex As Exception MsgBox(ex.Message.ToString) End Try ' Code to Update the CONTACTS table sbrContacts.Panels(4).Text =3D "Saving record ..." Try curContacts.Refresh() curContacts.EndCurrentEdit() ' Error here=20 With daContact.UpdateCommand .Parameters("I_F_NAME").Value =3D txtFName.Text .Parameters("I_M_NAME").Value =3D txtMI.Text .Parameters("I_L_NAME").Value =3D txtLName.Text .Parameters("I_CAOID").Value =3D cboCAO.ValueMember .Parameters("I_LEVELID").Value =3D cboLevel.ValueMember .Parameters("I_COMPANYID").Value =3D = cboCompany.ValueMember .Parameters("I_SITEID").Value =3D cboSite.ValueMember .Parameters("I_SUB_TEAMID").Value =3D = cboSubTeam.ValueMember .Parameters("I_FUNCTIONID").Value =3D = cboFunction.ValueMember .Parameters("I_SUB_FUNCTIONID").Value =3D = cboSubTeam_Function.ValueMember .Parameters("I_SUB_FUNCTION_2_ID").Value =3D = cboSubTeam_Function_2.ValueMember .Parameters("I_POSITIONID").Value =3D = cboPosition.ValueMember .Parameters("I_BUS_PHONE").Value =3D txtBus_Phone.Text .Parameters("I_BUS_PHONE_2").Value =3D = txtBus_Phone_2.Text .Parameters("I_BUS_MOBILE").Value =3D txtBus_Mobile.Text .Parameters("I_BUS_OTHER").Value =3D txtBus_Other.Text .Parameters("I_BUS_FAX").Value =3D txtBus_Fax.Text .Parameters("I_BUS_FAX_2").Value =3D txtBus_Fax_2.Text .Parameters("I_BUS_PAGER").Value =3D txtBus_Pager.Text .Parameters("I_BUS_EMAIL").Value =3D txtBus_eMail.Text .Parameters("I_NOTES").Value =3D txtNotes.Text .Parameters("I_SSN").Value =3D txtSSN.Text .Parameters("I_PAYROLL_NUM").Value =3D = txtPayroll_Num.Text .Parameters("I_GS_SERIES").Value =3D txtGS_Series.Text .Parameters("I_GS_GRADE").Value =3D txtGS_Grade.Text .Parameters("I_H_STREET_1").Value =3D txtH_Street_1.Text .Parameters("I_H_STREET_2").Value =3D txtH_Street_2.Text .Parameters("I_H_ZIP_CODE").Value =3D cboH_ZIP_Code.Text .Parameters("I_H_PHONE").Value =3D txtH_Phone.Text .Parameters("I_H_PHONE_2").Value =3D txtH_Phone_2.Text .Parameters("I_H_MOBILE").Value =3D txtH_Mobile.Text .Parameters("I_H_MOBILE_2").Value =3D txtH_Mobile_2.Text .Parameters("I_H_PAGER").Value =3D txtH_Pager.Text .Parameters("I_H_FAX").Value =3D txtH_Fax.Text .Parameters("I_H_EMAIL").Value =3D txtH_eMail.Text .Parameters("I_E_CONTACT").Value =3D txtE_Contact.Text .Parameters("I_E_STREET").Value =3D txtE_Street.Text .Parameters("I_E_STREET_2").Value =3D txtE_Street_2.Text .Parameters("I_E_ZIP_CODE").Value =3D cboE_ZIP_Code.Text .Parameters("I_E_PHONE").Value =3D txtE_Phone.Text .Parameters("I_E_PHONE_2").Value =3D txtE_Phone_2.Text .Parameters("I_E_PHONE_3").Value =3D txtE_Phone_3.Text .Parameters("I_CONTACTID").Value =3D lblContactID.Text End With daContact.Update(dsMulti, "CONTACTS") daContact.Fill(dsMulti, "CONTACTS") sbrContacts.Panels(4).Text =3D "Ready" Cursor.Current =3D System.Windows.Forms.Cursors.Default Catch oraEX As OracleException sbrContacts.Panels(4).Text =3D "Error" Cursor.Current =3D System.Windows.Forms.Cursors.Default MsgBox(oraEX.Message.ToString) End Try ------=_NextPart_000_0074_01C5F40F.2ADFBD40 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2900.2769" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT face=3DArial size=3D2>Hi All,</FONT></DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>I have a typed dataset which contains = several=20 tables. The 3 that I am experiencing difficulty with are "CONTACTS",=20 "ALL_ZIP_CODES" and "E_ZIP_CODES." The "CONTACTS" table is = selfexplantory. The=20 table "E_ZIP_CODES" is a subset of all ZIP codes that are in the = "CONTACTS"=20 table. The table "ALL_ZIP_CODES" consists of a complete listing of ZIP=20 codes.</FONT></DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>What I am trying to do is, when a user = updates or=20 adds a new contact, I search for the ZIP code in the "E_ZIP_CODES" table = (dvSearch below). If the ZIP code is not in the table "E_ZIP_CODES" (i = =3D -1=20 below), I want to add the ZIP code and city values from the = "ALL_ZIP_CODES"=20 datatable to the datatable "E_ZIP_CODES" so that I can update the = "CONTACTS"=20 table with the newly selected ZIP code. The new record is added to the = datatable=20 and all appears to be fine. However, when I try to update the "CONTACTS" = datatable, I get the error "Failed to enable constraints"</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>TIA,</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>Vince</FONT></DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>' Code to add new ZIP code<BR>Dim dv As = New=20 DataView<BR>Dim strSearch As String, i As Integer</FONT></DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>With dv<BR> .Table =3D=20 dsMulti.Tables("ALL_ZIP_CODES")<BR> .Sort =3D=20 "ZIP_CODE"<BR> .RowStateFilter =3D = DataViewRowState.CurrentRows<BR>End=20 With<BR>        <BR>strSearch =3D=20 cboE_ZIP_Code.Text.ToString</FONT></DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>If strSearch =3D "" Then strSearch =3D=20 txtE_ZIP_Code.Text.ToString</FONT></DIV> <DIV> </DIV> <DIV><FONT face=3DArial size=3D2>Try<BR> Dim dvSearch As New=20 DataView<BR> With dvSearch<BR>  .Table =3D=20 dsMulti.Tables("E_ZIP_CODES")<BR>      &nbs= p;        =20 .Sort =3D=20 "ZIP_CODE"<BR>         &nbsp= ;     =20 .RowStateFilter =3D DataViewRowState.CurrentRows<BR> End = With<BR> i =3D=20 dvSearch.Find(strSearch)<BR> If i =3D -1 Then<BR>    = Dim=20 strCity As String<BR>    With dv<BR>   =20     .Table =3D=20 dsMulti.Tables("ALL_ZIP_CODES")<BR>        = .Sort =3D=20 "ZIP_CODE"<BR>        .RowStateFilter =3D=20 DataViewRowState.CurrentRows<BR>    End=20 With<BR>    i =3D = dv.Find(strSearch)<BR>    strCity=20 =3D "Test"<BR>    Dim rowNew As = DataRow<BR>   =20 rowNew =3D dsMulti.Tables("E_ZIP_CODES").NewRow<BR>   =20 rowNew("ZIP_CODE") =3D strSearch<BR>    rowNew("CITY") = =3D=20 strCity<BR>   =20 dsMulti.Tables("E_ZIP_CODES").NewRow.BeginEdit()<BR>   =20 dsMulti.Tables("E_ZIP_CODES").Rows.Add(rowNew)<BR>   =20 dsMulti.Tables("E_ZIP_CODES").AcceptChanges()<BR>End If<BR>Catch ex As=20 Exception<BR> MsgBox(ex.Message.ToString)<BR>End Try</FONT></DIV> <DIV><FONT face=3DArial size=3D2></FONT> </DIV> <DIV><FONT face=3DArial size=3D2>' Code to Update the CONTACTS=20 table<BR>       sbrContacts.Panels(4).Text = =3D=20 "Saving record ..."<BR>Try<BR> curContacts.Refresh()<BR><FONT=20 color=3D#ff0000> curContacts.EndCurrentEdit() ' Error=20 here </FONT><BR> With=20 daContact.UpdateCommand<BR>       &nbs= p;        .Parameters("I_F_NAME")= .Value=20 =3D=20 txtFName.Text<BR>         &n= bsp;     =20 .Parameters("I_M_NAME").Value =3D=20 txtMI.Text<BR>         &nbsp= ;     =20 .Parameters("I_L_NAME").Value =3D=20 txtLName.Text<BR>         &n= bsp;     =20 .Parameters("I_CAOID").Value =3D=20 cboCAO.ValueMember<BR>        &nb= sp;      =20 .Parameters("I_LEVELID").Value =3D=20 cboLevel.ValueMember<BR>        &= nbsp;      =20 .Parameters("I_COMPANYID").Value =3D=20 cboCompany.ValueMember<BR>       &nbsp= ;       =20 .Parameters("I_SITEID").Value =3D=20 cboSite.ValueMember<BR>        &n= bsp;      =20 .Parameters("I_SUB_TEAMID").Value =3D=20 cboSubTeam.ValueMember<BR>       &nbsp= ;       =20 .Parameters("I_FUNCTIONID").Value =3D=20 cboFunction.ValueMember<BR>       &nbs= p;       =20 .Parameters("I_SUB_FUNCTIONID").Value =3D=20 cboSubTeam_Function.ValueMember<BR>      &n= bsp;        =20 .Parameters("I_SUB_FUNCTION_2_ID").Value =3D=20 cboSubTeam_Function_2.ValueMember<BR>      =          =20 .Parameters("I_POSITIONID").Value =3D=20 cboPosition.ValueMember<BR>       &nbs= p;       =20 .Parameters("I_BUS_PHONE").Value =3D=20 txtBus_Phone.Text<BR>        &nbs= p;      =20 .Parameters("I_BUS_PHONE_2").Value =3D=20 txtBus_Phone_2.Text<BR>        &n= bsp;      =20 .Parameters("I_BUS_MOBILE").Value =3D=20 txtBus_Mobile.Text<BR>        &nb= sp;      =20 .Parameters("I_BUS_OTHER").Value =3D=20 txtBus_Other.Text<BR>        &nbs= p;      =20 .Parameters("I_BUS_FAX").Value =3D=20 txtBus_Fax.Text<BR>         =       =20 .Parameters("I_BUS_FAX_2").Value =3D=20 txtBus_Fax_2.Text<BR>        &nbs= p;      =20 .Parameters("I_BUS_PAGER").Value =3D=20 txtBus_Pager.Text<BR>        &nbs= p;      =20 .Parameters("I_BUS_EMAIL").Value =3D=20 txtBus_eMail.Text<BR>        &nbs= p;      =20 .Parameters("I_NOTES").Value =3D=20 txtNotes.Text<BR>         &n= bsp;     =20 .Parameters("I_SSN").Value =3D=20 txtSSN.Text<BR>         &nbs= p;     =20 .Parameters("I_PAYROLL_NUM").Value =3D=20 txtPayroll_Num.Text<BR>        &n= bsp;      =20 .Parameters("I_GS_SERIES").Value =3D=20 txtGS_Series.Text<BR>        &nbs= p;      =20 .Parameters("I_GS_GRADE").Value =3D=20 txtGS_Grade.Text<BR>        &nbsp= ;      =20 .Parameters("I_H_STREET_1").Value =3D=20 txtH_Street_1.Text<BR>        &nb= sp;      =20 .Parameters("I_H_STREET_2").Value =3D=20 txtH_Street_2.Text<BR>        &nb= sp;      =20 .Parameters("I_H_ZIP_CODE").Value =3D=20 cboH_ZIP_Code.Text<BR>        &nb= sp;      =20 .Parameters("I_H_PHONE").Value =3D=20 txtH_Phone.Text<BR>         =       =20 .Parameters("I_H_PHONE_2").Value =3D=20 txtH_Phone_2.Text<BR>        &nbs= p;      =20 .Parameters("I_H_MOBILE").Value =3D=20 txtH_Mobile.Text<BR>        &nbsp= ;      =20 .Parameters("I_H_MOBILE_2").Value =3D=20 txtH_Mobile_2.Text<BR>        &nb= sp;      =20 .Parameters("I_H_PAGER").Value =3D=20 txtH_Pager.Text<BR>         =       =20 .Parameters("I_H_FAX").Value =3D=20 txtH_Fax.Text<BR>         &n= bsp;     =20 .Parameters("I_H_EMAIL").Value =3D=20 txtH_eMail.Text<BR>         =       =20 .Parameters("I_E_CONTACT").Value =3D=20 txtE_Contact.Text<BR>        &nbs= p;      =20 .Parameters("I_E_STREET").Value =3D=20 txtE_Street.Text<BR>        &nbsp= ;      =20 .Parameters("I_E_STREET_2").Value =3D=20 txtE_Street_2.Text<BR>        &nb= sp;      =20 .Parameters("I_E_ZIP_CODE").Value =3D=20 cboE_ZIP_Code.Text<BR>        &nb= sp;      =20 .Parameters("I_E_PHONE").Value =3D=20 txtE_Phone.Text<BR>         =       =20 .Parameters("I_E_PHONE_2").Value =3D=20 txtE_Phone_2.Text<BR>        &nbs= p;      =20 .Parameters("I_E_PHONE_3").Value =3D=20 txtE_Phone_3.Text<BR>        &nbs= p;      =20 .Parameters("I_CONTACTID").Value =3D=20 lblContactID.Text<BR>        &nbs= p;  =20 End = With<BR>          &nbsp= ;=20 daContact.Update(dsMulti,=20 "CONTACTS")<BR>         &nbs= p; =20 daContact.Fill(dsMulti,=20 "CONTACTS")<BR>         &nbs= p; =20 sbrContacts.Panels(4).Text =3D=20 "Ready"<BR>          &n= bsp;=20 Cursor.Current =3D System.Windows.Forms.Cursors.Default<BR>Catch oraEX = As=20 OracleException<BR> sbrContacts.Panels(4).Text =3D=20 "Error"<BR> Cursor.Current =3D=20 System.Windows.Forms.Cursors.Default<BR> MsgBox(oraEX.Message.ToStri= ng)<BR>End=20 Try<BR></FONT></DIV></BODY></HTML> ------=_NextPart_000_0074_01C5F40F.2ADFBD40-- Tag: define dataset column for timestamp data type in MS SQL server Tag: 121460
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    - ANN: OleDBProNet for .NET version 2 is released at www.udaparts.com Hi, All: OleDBProNet is a .NET class library which is a complete, feature-rich, and extremely powerful data access solution for .NET programmers through MS OLEDB technology. It offers the following key benefits over ADO.NET: 1. Extremely simple: OleDBProNet hides all of complexities of raw OLEDB programming. It is written with the classical ADO data accessing model. You will never meet BLOBs and other complicate data types conversion to bother you for all types of SQL statements. OleDBProNet comes with fifteen real and advanced C# and VB.NET samples to assist your developments no matter what programming background you have. If you have somewhat background in old ADO (Active Data Objects), you will feel OleDBProNet is extremely simple and intuitive to use. 2. Many features available: OleDBProNet supports all types of client and server cursors as shown in the attached samples. It supports all of advanced rowset navigation features (bookmark, record searching, index, bi-directional scrolling and jumping etc) directly on server side. OleDBProNet offers much more features than ADO.NET. 3. Super performance: OleDBProNet is written from Visual C++ 2005 C++/CLI with direct use of raw OLEDB interfaces, which almost eliminates data marshaling across layers between native and managed codes completely. Also, OleDBPro uses batching mode (20 records per batch) to retrieve and update records by default. Generally, OleDBProNet is about five times as fast as ADO in .NET environment. Also, OleDBProNet is about 15% faster than MS OleDB.NET provider. OleDBProNet can manage huge data records using server cursors, but ADO.NET can't. Therefore, OleDBProNet is significantly faster and simpler than ADO.NET for accessing a large number of data records. 4. Complete solution to all types of your databases: OleDBProNet is a complete solution to all of types of databases, SQL server, Oracle, Access, MySQL, DB2, ....... As long as you have an OLEDB provider, or ODBC driver, or ISAM driver available, it will work for you with one copy of code. -- Yuancai (Charlie) Ye Fast accessing all of remote data sources anywhere with SocketPro using batch/queue, non-blocking and parallel computation See 30 well-tested and real OLEDB examples at http://www.udaparts.com Tag: define dataset column for timestamp data type in MS SQL server Tag: 121458
  - 10
    - Comparing two datasets I need to compare the values of two datasets and retrieve the differences into a third dataset. I need to retrieve Employees names and numbers from Excel sheet into ds1 and retrieve Employees names and numbers from SQL Employees Table into ds2. I did this part successfully. Now i want to compare the values of both datasets so I can figure out new added employees in the Excel sheet and add them into ds3. How can I do that? I know i need to loop through one and look for each record in the other but I can't get the idea ... can anyone give me a sample of how to do this? Tag: define dataset column for timestamp data type in MS SQL server Tag: 121445
  - 11
    - best practice for transactions Hi, I'am developing an asp.net app that is using an sql server. How should I deal with transactions? Should I do the transactions in my stored procedures or should I use Serviced Components or... Thanks Tag: define dataset column for timestamp data type in MS SQL server Tag: 121443
  - 12
    - That pesky timestamp thing Creating a datatable from scratch and then I'm inserting with a select in the sproc to return the current values after the insert. Now I realize the timestamp column is a datatype of byte, and I'm not trying to insert the timestamp, but I want to keep the column in the datatable to be populated with the return values. However, when the dataadapter tries to apply the update, I'm getting an exception on the datatable timestamp datatype. Any thoughts? Tag: define dataset column for timestamp data type in MS SQL server Tag: 121440
  - 13
    - Getting the value of an identity column after an insert Hi all. I am trying to resolve this seemingly very simple and not to mention well documented problem but just couldn't seem to get it to work. I have a datatable that uses an identity column as the primary key. I need to get the value of the identity column back after performing an insert to the SQL Server 2005 (beta) database. From all the information that I have gathered, the following code should work: 1 SqlConnection conn = new SqlConnection(connStr); 2 conn.Open(); 3 SqlCommand cmd = new SqlCommand(string.Format("SELECT * FROM {0}", dt.TableName), conn); 4 SqlDataAdapter da = new SqlDataAdapter(cmd); 5 SqlCommandBuilder CB = new SqlCommandBuilder(da); 6 da.InsertCommand = CB.GetInsertCommand(); 7 da.InsertCommand.CommandText += string.Format("; SELECT * FROM {0} WHERE {1} = @@IDENTITY", dt.TableName, "PKeyID"); 8 da.InsertCommand.UpdatedRowSource = UpdateRowSource.Both; 9 da.Update(dt); 10 dt.AcceptChanges(); * dt is the database containing the rows that need to be inserted. * I had the FillSchema operated on dt so the identity column's AutoIncrement property is set to true. * I set the AutoIncrementSeed and AutoIncrementStep properties of the identity column set to -1. * I have already tried setting the UpdatedRowSource property to "Both" and "FirstReturnedRecord". But after running the above code, the value of the identity column remains -1. What am I missing??? In addition, if I need to wrap the update within a transaction, should I invoke the AcceptChanges call inside or outside the transaction? Will the row state reverse along with a rollback call? Any help will be greatly appreciated. Tag: define dataset column for timestamp data type in MS SQL server Tag: 121436
  - 14
    - Visual design tools and DAL in VS 2005 / .NET 2.0 Hi I wrote quite a few apps with .NET 1.0 and 1.1, which made use of a Data Access Layer, and also used the Microsoft Application Blocks for Data Access (v2). In VS 2005, there is a huge improvement in 'visually' designing the data access, and binding it to the controls on the form. I have 'played around' with the SqlDataSource component, which allows very quick, easy and simple access to a SQL DB. However, I have a couple of considerations, which I would like to get opinions on.... 1). If I want to use a common ConnectionString (ie. just have it coded in one place), how can I bind each of my controls to this connection?? (ie. I don't want to change 100's of controls if my connection string changes). 2). I want to keep in mind the 'Enterprise' way of doing things, via a DAL or Business Layer. Does anyone have any good source (C#), which shows the implementation of a Front end, DAL, and the component bindings. This can be using SQL commands, or Stored procedures, but I would appreciate details of Updates / Inserts etc, as well as simple selects (so that I can see the impact on Table Adapters etc). Thanks in advance Paul Tag: define dataset column for timestamp data type in MS SQL server Tag: 121435
  - 15
    - Conditions of DataBinding what are the conditions in order to bind to an object? i have an object, which implements the IList interface. Now I'am able to bind the objects, which are hold by the collection. now i implemented two properties in my collection. but i'm not able to bind to the properties of the collection itself. it must be the object in the list. that are my experiences. Example: public class MyCollection : IList { //Implementations of IList and so on.. public event EventHandler myValueChanged; public int myValue { get { return iMyValue; } set { iMyValue = value; if(myValueChanged != null) myValueChanged(this, EventArgs.Empty); } } } And i try to bind to an object.. //That works... textBox1.DataBindings.Add("Text", myClassInstance[1], "ValueOfMyObjectInList"); //That doesn't work numericBox1.DataBindings.Add("Value", myClassInstance, "myValue"); I get an error which tells me, that he isn't able to bind to a property or column of the datasource. parameter name: dataMember is it possible to bind to a property of a collection itself? Tag: define dataset column for timestamp data type in MS SQL server Tag: 121433
  - 16
    - Paging Problem I've got a PageIndexChanged event handler as follows: Private Sub dg_PageIndexChanged (ByVal s as System.Object, ByVal e As System.DataGridPageIndexChangedEventArgs) Handles dg.PageIndexChanged dg.CurrentPageIndex = e.NewPageIndex dg.DataSource = ds.Tables("ABC") dg.DataBind( ) End Sub ___________________________________ The datagrid does not display the next 10 rows of data when I clicked on the page number. As I have a dropdownlist, I selected another item and then back to the same item sgain. This time, when I clicked on the new page number, the next 10 rows were displayed. This is not what I want. It should be that when a new page number is selected, the next 10 rows will be displayed immediately. Don't know what's the problem. Can anyone help ? Tag: define dataset column for timestamp data type in MS SQL server Tag: 121430
  - 17
    - Losing Dataset icon/instance from project I've got a project with a Typed Dataset. The dataset consists of several tables. Every time I attempt to go into the dataset to adjust a table, like adding a new column that was added to the DB, I lose the dataset's icon in the designer and when I look in the project code the line of code where it get's dim'd is missing. I then have to go through a convoluted mess of tweaking to get the dataset back into the project. The XSD & dataset designer always stay intact, but I lose the Dataset from the project it was being used in. This is a VB.NET project in VS.NET 2003. I've had this happen in another project as well. So, I have to assume its a known bug, but I haven't been able to find any refrence to it on MSDN or Google. Any help on how to circumvent this issue would be greatly appreciated. I lose several hours everytime I have to modify the dataset... and when I have to modify the dataset again I've forgotten what the heck it was I did to get it working again the previous time! Tag: define dataset column for timestamp data type in MS SQL server Tag: 121429
  - 18
    - Insert BLOB problem Hi all, I am trying to use System.Data.ODBC to insert a file into a binary field in SQL Server 2000. Now, before you yell at me, the reason I am doing this is that I am only writing intitial code against SQL, but this app will need to be able to run against any ODBC compliant DB, so I am also not using stored procedures. I have tangles with this for hours, but I cannot seem to figure out how to just read the contents of a file off disk and write it into a binary field in SQL not using a stored procedure. If I can get that working, I can do whatever I need, but I can't so far. Does anyone have a sample of this or an article? There are many articles for doing this with SPROCS, doing this with SqlClient, not ODBC. I tried just modifying the objects from an SqlClient example, but no avail. Appreciate any help on this... Tag: define dataset column for timestamp data type in MS SQL server Tag: 121422
  - 19
    - Problem updating object behind bindingSource Hi folks, I have an form where there are two text boxes bound to an object via a BindingSource. I have implemented a document save function via Binary Serialization that writes the underlying object to disk. The problem is, if a user edits the data in one of the text boxes but DOES NOT leave the text box before selecting the Save menu item, the change in the text box is not replicated back to the object behind the form (the object that is serialized). Hence when I reload the document the Deserialized data contains the contents of the textbox before the user changed it. If the user leaves the textbox first, everything is fine. My thinking is that I need to force the form to propagate its current state back to the object before serializing, but would take some advice on the best way to do this. I appreciate this is not strictly an ADO.NET question but figured that being a data binding issue, someone on here might be able to help. Many thanks in advance. Simon Tag: define dataset column for timestamp data type in MS SQL server Tag: 121419
  - 20
    - VB.NET and MYSQL 5.0, Character Set Problem I am writing and VB.NET application, connect to MYSQL 5.0 (Linux) using MysqlConnector.NET The problem is it can't display and update correct Chinese Character. What Can I do? Thank you Tag: define dataset column for timestamp data type in MS SQL server Tag: 121414
  - 21
    - BindingSource.Clear method Hiya, I'm mucking around with .net 2, and experimenting with the BindingSource control. I've set the datasource to a dataset and set the datamember property as the table (or perhaps i've directly set the datasource to the table and left the datamember as null). When I run the Clear() method on the BindingSource, I get an exception from the runtime saying that the clear method cannot be used on the underlying datasource. Any ideas what I'm doign wrong? Thanks Tag: define dataset column for timestamp data type in MS SQL server Tag: 121409
  - 22
    - MSDN I just installed MSDN on my local computer. I set it up using 'BLANKSAPWD=1, and INSTANCENAME=kennel'. I attached my database using 'oSQL -E -S icc-station\kennel' utility. That went well. My original testing is with SqlServer 2000. and that was fine. The problem that I am having is I get the message 'SQL Server does not exist or access denied' My connecting string follows: this.cnKennel.ConnectionString = "Data Source=(local)\\kennel" + ";initial catalog=kennel" + ";Trusted_Connection=Yes" + ";integrated security=SSPI" + ";Connect Timeout=5"; Please tell me what I doing wrong??? -- Norm Bohana Tag: define dataset column for timestamp data type in MS SQL server Tag: 121408
  - 23
    - Hiding columns in a data grid (.net, c#) I wish to display, in a datagrid, only six columns of a table containing about twenty. I've created a data adapter which selects only the desired columns. I created a dataset and a dataview, and specified the dataview as the data source for my datagrid. The datagrid displays the 6 desired columns, in the sequence that I selected them, followed by the remaning 14. I read someplace that this is the default behavior. Two questions: (1) How do I hide the unwanted 14 coulumns? (2) How can I change the column headings to something other than the column name of the underlying table? Thanks, Phil raincounty<*>hotmail.com -- replace the <*> with you know what Tag: define dataset column for timestamp data type in MS SQL server Tag: 121407
  - 24
    - DataBinding problem Hello, i written a collection which holds instances of a specifc class. i added a binding like that textBox1.DataBindings.Add("Text", ((MyClass)oMyCollection[1], "Description"); If the content of the textbox changed, the values are saved in the object of the collection where the controls is bound to. my problem is that other controls don't refresh their data. so if i change the value of a property in my instance. the control still holds the old value. i tried the following: this.BindingContext[((MyClass)oMyCollection[1], "Description"].EndCurrentEdit(); but it wasn't the solution. any ideas? Tag: define dataset column for timestamp data type in MS SQL server Tag: 121401
  - 25
    - Debugging SQL Server 200 Stored Procedures with ADO .NET With SQL Server 2000 with SP3a we used to be able to debug our Stored Procedures by stepping into them via our ADO .NET code, but we have recently upgraded to SP4 and can no longer do this unless we connect as 'sa'. We have made sue that the Extended Stored Procedure sp_sdidebug can be accessed by the user we normally connect as and we always execute the following line on startup to turn on legacy debugging. exec [master].[dbo].[sp_sdidebug] 'legacy_on' Furthermore we have verified in our DCOM configuration properties that under 'Default Protocols' there is a 'Connection-orientated TCP/IP' entry and this is the first entry in the list. Any help on why we are unable to debug our stored procedures would be greatfully appreciated. Tag: define dataset column for timestamp data type in MS SQL server Tag: 121394
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  - 1
    - typed dataset + null values + cm.EndCurrentEdit Hi, I have a typed ds which contains a single table which in turn has a number of columns for which "min occurs = 0". The columns from this ds are bound to a bunch of controls on a form. I am having some trouble with the currencymanager when it comes to adding a new row, as follows; 1. Addnew method called 2. User starts entering data 3. User decides to exit form using control box (X) upper right then; Validating event for non nullable control fires and sets cancel to true Form Closing event fires and attempts to catch changes to ds using the EndCurrentEdit in order to allow user the option to stop. EndCurrentEdit causes "System.Data.NoNullAllowedException, "Column 'PS_PhoneNumber' does not allow nulls." Problem: if I don't call EndCurrentEdit the ds.HasChanges is False. If I do, I get the above exception. I thought I should be able to end the edit and check the ds.HasErrors rather than have the exception generated. I suspect I don't understand something here. Any advice would be appreciated. Thanks Paul Sample: (Hopefull enough1) Private Sub ubtnAdd_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ubtnAdd.Click ' Add new patient record. cmPatients.EndCurrentEdit() cmPatients.AddNew() End Sub Private Sub unePhone_Validating(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles unePhone.Validating If unePhone.Value Is System.DBNull.Value Then Me.epPatients.SetError(unePhone, "Phone Number Must Be Entered") e.Cancel = True Else Me.epPatients.SetError(unePhone, "") End If End Sub Private Sub frmMaintPatients_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing ' Check there are no outstanding changes which have not been sent to the DB cmPatients.EndCurrentEdit() ''''' PROBLEM HERE!! If dsMaintPatients.HasChanges Then If Not DiscardUserChanges() Then e.Cancel = True Exit Sub End If End If ' Allow the form to close even if the user has become stuck in validating events e.Cancel = False End Sub Tag: define dataset column for timestamp data type in MS SQL server Tag: 121392
  - 2
    - Embeded MySQL with C# I wrote an application using c# and mySQL database. But when I deploy it doesn't work on an other PC. How can I embed mysql in C#. A code example will be quite helpful for me. Any help wll be appreciated. Tag: define dataset column for timestamp data type in MS SQL server Tag: 121390
  - 3
    - Retrieving untyped dataset schema What's the best approach to retrieving schema for an untyped dataset? Do it manually, an empty sproc, what else? Tag: define dataset column for timestamp data type in MS SQL server Tag: 121389
  - 4
    - Click on hyperlink column to launch audio clips I have a datagrid that consists of a data-bound hyperlink column binded to the "Song Name" column of the data source. When user clicks on one of the links, the associated media application such as RealPlayer or Windows Media Player will be launched. I searched through the MSDN Library and found that Windows API can be used to play simple sounds. Is there other alternatives to achieve it ? Tag: define dataset column for timestamp data type in MS SQL server Tag: 121387
  - 5
    - is it possible to use ip:port instead of sid for oracleconnection? for example: connectionstr="DATA SOURCE=192.168.1.11:1521;UID=bnd;PWD=bnd;" instead of connectionstr="DATA SOURCE=sid;UID=bnd;PWD=bnd;" new oracleconnection(connectionstr); is it ok, and what is the format of data source? Tag: define dataset column for timestamp data type in MS SQL server Tag: 121384
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    - Query Builder Tool Is there out a Query Builder Tool that is possible to integrate into my application ? Mainly for MS SQL Server. Which one do you recommend ? Thanks in advance Tag: define dataset column for timestamp data type in MS SQL server Tag: 121379
  - 7
    - This has to be a BUG After spending a few hours experimenting the typed dataset serialization (see previous post "How to include public properties in a typed dataset in serialization"), this is what I found which does look like a bug (I'm using the normal serialization with XmlSerializer): . The values for the public property are in fact written into the Xml. They are presented as the attributes of the Element for the Dataset. They have the namespace of "msdata". . If the public property is of Int16, it will be ignored and not written into the Xml. . For the public properties which are written into the Xml, the deserialization does not recover them. This means that the instance returned from the deserialization doesn't have these property values set. So it seems to me that something is only half done here. If the behaviour is by design, then I don't understand why these public properties were written into the Xml in the first place. And why properties with certain data type are not written into the Xml at the same time. Michael Tag: define dataset column for timestamp data type in MS SQL server Tag: 121378
  - 8
    - Data->Generate Dataset|Preview Data I am writing an ADO.NET provider for a specialized (non-SQL) data store, and wanted to support the options in the Data menu, specifically "Generate Dataset" and "Preview Data". The documentation on these types of features is near to non-existant, including when you download the VSIP package (I thought that would help but it doesn't). I have the following three problems: 1. I cannot get my DataAdapter implementation to enable these menu options. 2. If I add another adapter, which does enable these options, the Generate Dataset option gives me a dialog box titled "Microsoft Development Environment" with the following text in it: "Retrieving the schema for MyDataAdapter1 failed. Object reference not set to an instance of an object." 3. Also, with another adapter to enable these options, if you select my adapter in the Preview Data dialog, and attempt to "Fill Dataset", you get the following error message in another "Microsoft Development Environment" dialog box: "The data adapter "MyDataAdapter1" is not completely configured. To resolve this problem, configure the adapter by using the Data Adapter Configuration Wizard or by setting the SelectCommand property of the adapter." My question is this. Is there any place that defines what these option expect, or what calls they make to a DataAdapter implementation? Any place where this is documented in a useful fashion. The documentation for all of this is really sparse!!! Help! ;) Tag: define dataset column for timestamp data type in MS SQL server Tag: 121375
  - 9
    - Error converting data type numeric to decimal? I am running a stored procedure and getting the error 'Error converting data type numeric to decimal'. I just can't work out why. My stored procedure values are defined like so: @addOn1 decimal(7,2), @addOn2 decimal(7,2), @addOn3 decimal(7,2), @addOn4 decimal(7,2), @addOn5 decimal(7,2), @addOn6 decimal(7,2), @addOn7 decimal(7,2), @addOn8 decimal(7,2) These map to the precision/scale values in my database. I am calling the stored procedure from dotnet like so: sqlCmd.Parameters.Add("addOn1", objPremium.addOn1); sqlCmd.Parameters.Add("addOn2", objPremium.addOn2); sqlCmd.Parameters.Add("addOn3", objPremium.addOn3); sqlCmd.Parameters.Add("addOn4", objPremium.addOn4); sqlCmd.Parameters.Add("addOn5", objPremium.addOn5); sqlCmd.Parameters.Add("addOn6", objPremium.addOn6); sqlCmd.Parameters.Add("addOn7", objPremium.addOn7); sqlCmd.Parameters.Add("addOn8", objPremium.addOn8); try { sqlCmd.ExecuteNonQuery(); blnReturnVal = true; } catch(Exception e) { Debug.Trace.WriteLine(e); blnReturnVal = false; } And getting the exception there. the objPremium.addOn1 - objPremium.addOn8 values are all decimals. I am instantiating them like so and not setting them to anything else (for debug purposes): public decimal addOn1 = -1; public decimal addOn2 = -1; public decimal addOn3 = -1; public decimal addOn4 = -1; public decimal addOn5 = -1; public decimal addOn6 = -1; public decimal addOn7 = -1; public decimal addOn8 = -1; I'm sure it's something obvious, but can anybody spot what I'm doing wrong? Thanks in advance! Tag: define dataset column for timestamp data type in MS SQL server Tag: 121370
  - 10
    - MS Access problems Hi there, I'm currently rewriting an old VB 6 (stand alone) application in VB .Net 2003 in which users can create MS Access databases. In the new version I want to add security options like encrypting the database, adding users and groups etc. I managed to create MS access databases and tables using ADOX, but I can't add users and groups to it. I use the following code: Dim myCat as New ADOX.Catalog Dim myCon as OleDb.OleDbConnection Dim myConStr as String Dim myNewUser as ADOX.User Dim myNewGroup as ADOX.Group Try myConStr = "Provider=Microsoft.Jet.OLEDB.4.0; Jet oledb:system database=system.mdw;" & _ "Data Source=C:\Test.mdb" 'Creating the database myCat.Create(myConStr) myCon = New OleDb.OleDbConnection(myConStr) myCon.Open() myCat.ActiveConnection = myCon <<-- This seems to be the problem after debugging the code 'Creating a new group myCat.Groups.Append("User group") 'Creating a new user myNewUser = New ADOX.User myNewUser.Name = "Jan Janssen" myCat.Users.Append(myNewUser) 'Add new user to the new group myNewUser.Groups.Append("User Group") myCon.Close() myCat = Nothing myCon = Nothing Catch ex as Exception MessageBox.Show(ex.Message) End Try When executing this code the following error occurs: "Interface not supported" Can anyone help me out or is there an alternative approach without using SQL servers? thnx Tag: define dataset column for timestamp data type in MS SQL server Tag: 121369
  - 11
    - Convert is not a member of String Hi All, I have the following Code: Public Sub SetAccessLevelNull() Me(Me.tableGeneralPasswords.AccessLevelColumn) = System.Convert.DBNull End Sub Im getting a ErroR on this Saying "Convert is Not a Member of String" Could somebody kindly point me in the right direct? Many Thanks NSC Tag: define dataset column for timestamp data type in MS SQL server Tag: 121366
  - 12
    - Convert is not a member of String Hi All, I have the following Code: Public Sub SetAccessLevelNull() Me(Me.tableGeneralPasswords.AccessLevelColumn) = System.Convert.DBNull End Sub Im getting a ErroR on this Saying "Convert is Not a Member of String" Could somebody kindly point me in the right direct? Many Thanks NSC Tag: define dataset column for timestamp data type in MS SQL server Tag: 121365
  - 13
    - Cannot add integer or long column to microsoft access table using ado.net Hi, I have a problem. I can't add integer or long columns to ms access table using ado.net. Could you just take a look at it. I think sql syntax is correct. The weird thing is that in another program it is working and it is the same code. If you comment out these two lines of code: "IDParent INTEGER, "+ "Position INTEGER, "+ then everything is ok, the table is created. The problem is I can't add LONG or INTEGER columns. I don't know what's going on, maybe it's some kind of a bug? Sample usage: Test.exe c:\\test.mdb using System; using System.Data; using System.Data.OleDb; namespace Test { public class Test { /// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main(string[] args) { Test t = new Test(); if (args.Length ==1) { t.Execute(args[0]); } } private string connectionString = ""; private OleDbConnection connection; private bool CreateTableWorkTopics() { string sqlText = "CREATE TABLE WorkTopics "+ "(IDWorkTopic COUNTER, "+ "IDParent INTEGER, "+ "Position INTEGER, "+ "Title CHAR(255), "+ "CONSTRAINT WorkTopics_PK PRIMARY KEY (IDWorkTopic))"; ExecuteNonQuery(sqlText); return true; } private void ExecuteNonQuery(string sqlText) { OleDbCommand cmd = new OleDbCommand(sqlText, connection); cmd.CommandType = CommandType.Text; cmd.ExecuteNonQuery(); } public void Execute(string path) { try { connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;"+ "Data Source=\""+path+"\";"+ "User ID=Admin;"+ "Password="; // create mdb file if (!System.IO.File.Exists(path)) { ADOX.CatalogClass catalog = new ADOX.CatalogClass(); catalog.Create(connectionString); catalog = null; } connection = new OleDbConnection(connectionString); connection.Open(); CreateTableWorkTopics(); connection.Close(); } catch (Exception ex) { Console.WriteLine(ex.ToString()); Console.ReadLine(); } } } } Tag: define dataset column for timestamp data type in MS SQL server Tag: 121362
  - 14
    - DataSet write XML Hi, I have observed that DataSet.WriteXML() method does not store "Allow Zero Length", "Indexed", and "Required" properties of the fields of a table in the table schema. dataset.WriteXml(stream, XmlWriteMode.WriteSchema) How do I instruct WriteXML() method to include these information along with field name, type and size? <xs:element name="field1"> <xs:simpleType> <xs:restriction base="xs:string"> <xs:maxLength value="64" /> </xs:restriction> </xs:simpleType> </xs:element> Also, minOccurs="0" translates into which property in the MS Access database? Regards Sanjib NB: Please include "microsoft.public.dotnet.languages.vb, microsoft.public.dotnet.xml" in your reply. Tag: define dataset column for timestamp data type in MS SQL server Tag: 121357
  - 15
    - Kevin Yu [MSFT]- How to include public properties in a typed dataset in serialization? The public properties are not related to the typed dataset but defined in the typed dataset class. Although the typed dataset class is marked <serializable()>, these public properties are ignored when the class is serialized. This does not seem to be right. Kevin's reply indicated that dataset serialization is based on the xsd, means that it ignors the public properties which are defined in the partial class. This appears to contradict the basic serialization rule from .NET - public property of a serializable class gets serialized. It does sound like a BUG. So what do i need to do in order to serialize these public properties? For Kevin Yu, please provide a code sample as your pointed direction is just too vague for me to follow. Thanks, Michael Tag: define dataset column for timestamp data type in MS SQL server Tag: 121350
  - 16
    - Binding textbox to dataview.table.column Help me out!!!!!!!!! i am creating a windows application.My datahandling class is returning a dataview.i m assigning this returned dataview to a dataview on my winform.then by using a databinding.add method of textbox i binnd one of the column of dataview to this textbox.but when i refill this dataview by another method in my class it does not show record after navigating. plz help me out thanks in advanse Tag: define dataset column for timestamp data type in MS SQL server Tag: 121347
  - 17
    - Serialization Problem: custom properties of a derived DataSet class not serialized I created a strongly typed dataset using the designer and added a couple of public properties via the Partial Class. Everything is fine and the strongly typed data set functions as expected including the public properties until the serialization/deserialization process. When all the custom public properties are total ignored and lost. Is this behaviour by design or simply a bug? Thanks, Michael Tag: define dataset column for timestamp data type in MS SQL server Tag: 121325
  - 18
    - Can the application.config file handle provider registration? Hi there, I'm looking into provider-independent data access with ADO.NET 2.0. The available providers should be registered in the machine.config file, but what If I don't have access to that file? Can I register my provider in the application's .config file or some other place? Best Regards, -Benton Tag: define dataset column for timestamp data type in MS SQL server Tag: 121324
  - 19
    - Invalid Operation Exception when adding Collection to Binding Source Hello all, Firstly, this is a .NET 2.0 issue. (C#) I have a DataGridView and a dataset that has been generated by the wizard from a strongly typed collection. In my form_load I am attempting to add an instance of this collection to the BindingSource eg. gridBindingSource.Add(myStronglyTypedCollectionInstance); I am getting an Invalid Operation Exception (Objects added to a BindingSource's list must all be of the same type). The collection in question is a strongly typed collection of abstract objects. That is, I have an abstract class which is generalised by two sub classes. I have built a collection to hold the abstracts. Note this happens even though the collection is empty. Is this a limitation of the BindingSource? Any help greatly appreciated. Cheers Simon Tag: define dataset column for timestamp data type in MS SQL server Tag: 121323
  - 20
    - Adapter.Update does not change database I am trying to enter a new row into a test database and have been unsuccessful. The code compiles fine and runs with out runtime errors, however after closing the form and checking the database it is the same. Since this is my first time using a database any additional suggestions that I should check on that are not obvious in my code snippet will be useful! Sincere thanks, Rock private void button1_Click(object sender, EventArgs e) { // Create new entry myDatabaseDataSet.UserNamesRow user = myDatabaseDataSet.UserNames.NewUserNamesRow(); user.First = firstTextBox.Text; user.Last = lastTextBox.Text; myDatabaseDataSet.UserNames.Rows.Add(user); // Save new entry this.Validate(); this.userNamesBindingSource.EndEdit(); if(user.RowState != DataRowState.Added) MessageBox.Show("No Changes Seen in DataSEt"); int result = this.userNamesTableAdapter.Update(this.myDatabaseDataSet.UserNames); //Display # of updated rows MessageBox.Show(result.ToString()); } Tag: define dataset column for timestamp data type in MS SQL server Tag: 121322
  - 21
    - AddingNew BindingSource Hi All, Need help with the following: I have a DataGridView bound to an SQL Server table. I would like to use the ocrresponding Windows Forms BindingSource's AddingNew event to default a column to a specified value. For example, when the user clicks on an "Add New Customer" button or the "New" button on the BindingNavigator control, I'd like to use the AddingNew event of the BindingSource to default certain values like CustomerID, Quantity, etc... to a value that I assign programatically (value may come from another object or table). The problem is that I have read that I cannot use the AddingNew event of the BindingSource when the source is bound to a table. In the AddingNew event of the BindingSource, I am using typed Datasets and would like to create a new "Customer" row, modify some properties (ID, Quanity, AddingNewEventArgs. That's where the error occurs. Any help? Regards, Giovanni Tag: define dataset column for timestamp data type in MS SQL server Tag: 121320
  - 22
    - Disconnected DataSets and DataViews For scalability we wish to use disconnected DataSets and hold them in the application cache. This means that multiple concurrent users will be reading the data (its read only) The DataSet is fairly complicated and contains many tables and many relationships What we would like to do is create a DataView that flattens the in memory DataSet so that we can bind this single view to a control We need to hold the separate tables in memory because there are some tables that have parent child relationships where the parent has many thousands of children (and grand children) think Products and Orders and we want to hold Products and Orders in Memory, the reason is that each Product row is large enough not to warrant holding it multiple times OK, the problem is that a DataView can only have one table and the row filter can only be for that table, what we want to do is an equivalent of a sql select (with a join) but from disconnected a DataSet e.g. Select Product.ID, Product.Code, Product.Image, Order.FirstName, Order.Price from tbl_Product PRoduct join tbl_Order Order on Order.ProductID = Product.ID Any help would be appreciated Tag: define dataset column for timestamp data type in MS SQL server Tag: 121312
  - 23
    - Dataview rowfilter Hello Everyone! I'm currently having trouble with a rowfilter where the name of the column containt bracket. Here the name of the column [Measures].[PointX] when i sort the dataview it's ok no trouble DataView dv = new DataView(dt); dv.Sort = "[[Measures].[PointX]] ASC"; //it's ok working But if I add the line it crash dv.RowFilter = "[[Measures].[PointX]] = 0"; with the exception .. An unhandled exception of type 'System.Data.SyntaxErrorException' occurred in system.data.dll Additional information: Cannot interpret token ']' at position 21. Anyone know a workaround? Thanks you Best Regards, Patrice Lamarche Tag: define dataset column for timestamp data type in MS SQL server Tag: 121309
  - 24
    - SqlCommandBuilder.DeriveParameters Permissions hello, i'm trying to populate the ParametersCollection of a SqlCommand throug the static method DeriveParameters of the SqlCommandBuilder class everything works fine when using the sa login of the database - but when i try to use a login which only have permissions to "Execute" the stored procedure the method only returns the ReturnValue of the stored procedure as Parameter. i've also tried to grant the permission "View Definition" but with no success any ideas or advices? regards, mike s. Tag: define dataset column for timestamp data type in MS SQL server Tag: 121305
  - 25
    - Access Hi, Was wondering if anybody could help. I'm looking to add a lots of records to an access database, but it looks like I'm going to have to insert them one at a time!!! Looks like I'm going to have to do this for each new record.. Insert into Database(<fields>) VALUES(<values>) Was wondering if there was anything similar to the MySQL Implementation where I can add several new rows in one SQL command. Many thanks Wayne Tag: define dataset column for timestamp data type in MS SQL server Tag: 121302

All,

What kind of data type should I use to definde a timestamp (row version)
data-type in MS SQL Server for a column in a dataset?

I tried to define it as byte[], but MSDataSetGenerator is giving me the
"unable to convert xml file content to a DataSet" error.

Thanks,

John Yung

Top

Re: define dataset column for timestamp data type in MS SQL server by Miha

Miha
Tue Nov 29 02:01:33 CST 2005

Hi John,

Go with base64Binary instead.

--
Miha Markic [MVP C#]
RightHand .NET consulting & development www.rthand.com
Blog: http://cs.rthand.com/blogs/blog_with_righthand/

"John Yung" <johny@sac.com> wrote in message
news:%23MWI%23LH9FHA.1148@tk2msftngp13.phx.gbl...
> All,
>
> What kind of data type should I use to definde a timestamp (row version)
> data-type in MS SQL Server for a column in a dataset?
>
> I tried to define it as byte[], but MSDataSetGenerator is giving me the
> "unable to convert xml file content to a DataSet" error.
>
> Thanks,
>
> John Yung
>
>

Top

Re: define dataset column for timestamp data type in MS SQL server by John

John
Wed Nov 30 10:48:59 CST 2005

Miha,

Thanks, that works.

JY

"Miha Markic [MVP C#]" <miha at rthand com> wrote in message
news:%23IFZfsL9FHA.2844@TK2MSFTNGP10.phx.gbl...
> Hi John,
>
> Go with base64Binary instead.
>
> --
> Miha Markic [MVP C#]
> RightHand .NET consulting & development www.rthand.com
> Blog: http://cs.rthand.com/blogs/blog_with_righthand/
>
> "John Yung" <johny@sac.com> wrote in message
> news:%23MWI%23LH9FHA.1148@tk2msftngp13.phx.gbl...
> > All,
> >
> > What kind of data type should I use to definde a timestamp (row version)
> > data-type in MS SQL Server for a column in a dataset?
> >
> > I tried to define it as byte[], but MSDataSetGenerator is giving me the
> > "unable to convert xml file content to a DataSet" error.
> >
> > Thanks,
> >
> > John Yung
> >
> >
>
>

Top