Different kind of db connection

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  - 1
    - pending local transaction Is there anyway to determine if the OleDbConnection is in a pending local transaction? thanks, Shawn Tag: Different kind of db connection Tag: 66063
  - 2
    - Values in a new datatable row Hi all, I have a very simple question: how to set default values in a new table row? 1. DataTable.RowChanged does not work if I have gui controls bound to the table, because it fires after the new record is accepted. 2. DataColumn.DefaultValue does not work either - what if I want to store the exact row-creation time? 3. CurrencyManager.PositionChanged does not work either - what if I don't have controls bound to to table. So, where is the DataTable.OnNewRow event ??? Regards radi Tag: Different kind of db connection Tag: 66061
  - 3
    - QueryBuilder and OLEDB I'm using VS .NET 2003 ASP.NET project C#. If I create a query like this in the query builder (using the selectcommand of a oledbDataAdapter) SELECT * FROM TABLE WHERE ID IN (?) and pass the parameters in this way myDataAdapter.SelectCommand.Parameters["paramName"].Value="'COD1','COD2'"; when I fill the dataset I obtain no rows. If I change the commandtext in SELECT * FROM TABLE WHERE ID IN ('COD1','COD2') I obtain 10 rows when fill the dataset. Can someone help me? Thanks Gianluca Miseria Tag: Different kind of db connection Tag: 66058
  - 4
    - Unecessary spaces in table. Why the hell is it that whenever I open a page in VS.net it always shoves blank spaces before all of my text fields. I am sick of this. I keep having to remove them every time I open the page. Tag: Different kind of db connection Tag: 66057
  - 5
    - some problem in System.Data with delete Hi to all I try to delete row from DataTable. When I make row.Delete sometimes I get this exception System.ArgumentOutOfRangeException I trace a little bit the problem and I think found something When I make delete in DataTable is invoked RecordStateChanged which in Turn meke this int i = LiveIndexes.Count; and then for (int j = 0; j < i; j++) { if (record1 != -1 && record2 != -1) { ((Index)indexes[j]).RecordStateChanged(record1, oldState1, newState1, record2, oldState2, newState2); } ... From here we see that this method calls RecordStateChanged in System.Data.Index and some times the LiveIndexes.Count is changed, but i is unchanged and here comes the problem If in the beginning i = 21, after this call LiveIndexes.Count = 20 , but i is still 21 and it make access by index 20 which course exception. I think that because System.Data.Index. RecordStateChanged fire event OnListChanged which in turn can change indexes ArrrayList. Can somebody help to resolve the probem? Thanks Tag: Different kind of db connection Tag: 66054
  - 6
    - Transaction with oledbCommandBuilder Hello, I want to give transaction support with Commands generated by OledbCommandBuilder, can anybody tell me how to do that. Regards, Devdatta Tag: Different kind of db connection Tag: 66050
  - 7
    - how can I make the dataadapter to return multiple recordsets? I want to use adapter.Fill(ds); to get the data result, and I hope this can contain two or more recordsets in the dataset, then I can use ds.tables[i] to access the different recordsets. thanks Tag: Different kind of db connection Tag: 66049
  - 8
    - VB.NET Retrieving Identity form MSSQL2000 without using stored procedures Hello! I have a problem. I'm using a dataset in VB.NET with multiple tables with relations between them. I would like dataset to update to all related tables with right identity, when certain record is added. The problem is that I don't know how to do it, when I'm not using stored procedures. I found an article in which OnRowUpdated event of the dataadapter is used. On this event ExecuteScalar method of the oledbcommand object is called to retrieve "@@Identity" http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpguide/htm l/cpconretrievingidentityorautonumbervalues.asp But this example was for Access 2000 database. I tried to translate it for MSSQL 2000 but ExecuteScalar always returns null. In the same article there's an example which calls a stored procedure in a insert command. In that case everything is working perfectly, all child tables in dataset are automatically changed. Does anybody have any idea how to solve this? Regards, Taras Tag: Different kind of db connection Tag: 66047
  - 9
    - Basic Question - But is Stopping me... any help? how to add items and update the index of the relationship table automatically? A sample of the problem : I have 2 tables with a relationship n..n so this means that the relationship is also generating a table so what kind of code I can use to do this. table 1 has the name of the persons : table 2 has the car that this person have... Note that I already have the peoples name filled with some records. first table has a PK let's call table1_rowid second table has a PK ... table2_rowid then the relationship m to n is generating a tbl1_tbl2 where I have two fields table1_rowid and table2_rowid When I'll add a new record in the table2 for the person that has the table1.rowid =1 what is the code that I can use to automattically fill the necessary information in the relationship table tbl1_tbl2?????? No doubt that exist some code to that automattically in the new ado.net or regular oledb.... objects in the DOTNET??? Any idea, to make my life easier? Tag: Different kind of db connection Tag: 66043
  - 10
    - Reading output parameter from stored procedure...... In my ADO.Net coding I am using SQLCommand and SQLParameter to run stored procedure. Can any one advice me how to read the output parameter from a stored procedure. I am using SQL Server 2000. Gish Smith Tag: Different kind of db connection Tag: 66041
  - 11
    - "Generate Dataset" for custom data provider Hello, my company offers a set of ado.net components for its own database format and we want to respond to the general "Generate Dataset", "Preview Data" and "Configure Data Adapter" commands in the menus. In Visual Studio 2002 we had found a dirty trick to enable those commands but this doesn't work with VS 2003 anymore. The question now is whether there is now an official way to support those commands for custom data providers. Or has somebody found another way to activate them? Any help apreciated Peter Tag: Different kind of db connection Tag: 66027
  - 12
    - Filling a DataSet from a sql query against a XML schema Hi I'd like to know if it's possible, with an OleDbProvider, to fill a dataset from a sql squery against a XML schema. For exemple, i have this OleDbCommand : SELECT computer.name, processor.frequency, soundCard.model FROM computer INNER JOIN processor ON computer.processor_id = processor.id LEFT OUTER JOIN soundCard ON computer.soundCard_id = SoundCard.id After I use an OleDbDataAdapter to fill a dataset whose name is "computers". And I want to have to get the Xml data of this dataset. The result i want (by getting Xml) is <computers> <computer> <name>My Computer</name> <processor> <frequency>3Hz</frequency> </processor> <soundCard> <model>16 Bits sound card</model> </soundCard> </computer> </computers> But I have : <computers> <computer> <name>My Computer</name> <frequency>3Hz</frequency> <model>16 Bits sound card</model> </computer> </computers> I tried to load a schema into the dataset with ReadXml method but it seems that it doesn't work after the oleDbDataAdapter Fill method. I tried Microsoft SQLXML but it's still incomplete and very slow. So If someone knows if the thing i want to do is possible, please answer. Thanks Monorom SARIN Tag: Different kind of db connection Tag: 66026
  - 13
    - Two DataGrids on One Form? Could be simple solution, but I can't findcontrol !!! I have the something like the following data structure: Users users_ID, orgs_ID, users_email, users_password, etc. Orgs orgs_ID, orgs_name, orgs_description, etc. I have a single form with two datagrids. I have loaded one dataset with two tables. There is only a single record at any time in each of the tables in the bound dataset. I bind the first datagrid to one datatable, and the second datagrid to another datatable. Both datagrids seem to populate just fine in edit mode, but... My UPDATE routine is fired on the update command of the first user_profile datagrid. SO THE PROBLEM IS: I can't findcontrol for the org_id in the second datagrid. The key issue here is the need to easily enable additional records to be added to the second datagrid, to enable the registration of different orgs. Anyone know about using multiple datagrids (not necessarily nested) on the same page? Just to prove I have NO idea what I'm doing, here's some of my code my code (simplified)... CODE SNIPPET Private Sub user_profile_update(Sender As Object, E As DataGridCommandEventArgs) If page.isValid Then Dim main_email As TextBox = e.Item.FindControl("main_email") Dim main_password As TextBox = e.Item.FindControl("main_password") Dim org_id As DropDownList = CType(FindControl("org_id"), DropDownList) data_set = load_user_data() Dim data_table as String data_table = "main_identity" If data_set.tables(data_table).Rows.Count > 0 Then With data_set.tables(data_table).Rows(0) .Item("main_email") = main_email.Text .Item("main_password") = main_password.Text .Item("org_id") = org_id.selecteditem.value <<<<<< ERROR ERROR System.NullReferenceException: Object reference not set to an instance of an object. End With End If user_profile.EditItemIndex = -1 org_profile.EditItemIndex = -1 bind_profiles() ViewState("Add") = "Off" ViewState("Edit") = "Off" End If End Sub <form runat="server" name="profile"> <ASP:DataGrid id="user_profile" runat="server" Autogeneratecolumns="false" MaintainState="false" Border="0" Cellspacing="0" Cellpadding="0" ShowFooter="true" OnEditCommand="user_profile_edit" OnCancelCommand="user_profile_cancel" OnUpdateCommand="user_profile_update" DataKeyField="main_id"> <Columns> <asp:EditCommandColumn EditText="Edit" CancelText="Cancel" UpdateText="Update" /> <asp:BoundColumn DataField="main_id" ReadOnly="True" visible="false"/> <asp:TemplateColumn> <ItemTemplate> Email Address: <%# Container.DataItem("main_email") %><br> Password: <%# Container.DataItem("main_password") %><br> </ItemTemplate> <EditItemTemplate> Email Address: <asp:TextBox id="main_email" Size="7" Text='<%# Container.DataItem("main_email") %>' runat="server"/><br> Password: <asp:TextBox id="main_password" Size="7" Text='<%# Container.DataItem("main_password") %>' runat="server"/><br> </EditItemTemplate> </asp:TemplateColumn> </columns> </asp:datagrid> <ASP:DataGrid id="org_profile" runat="server" Autogeneratecolumns="false" MaintainState="false" Border="0" Cellspacing="0" Cellpadding="0" ShowFooter="false" ShowHeader="false" DataKeyField="org_id"> <Columns> <asp:EditCommandColumn visible="false" EditText="Edit" CancelText="Cancel" UpdateText="Update" /> <asp:BoundColumn DataField="org_id" ReadOnly="True" visible="false"/> <asp:TemplateColumn> <ItemTemplate> Organization Name: <%# Container.DataItem("org_name") %><br> Organization Type: <%# Container.DataItem("org_type_id") %><br> </ItemTemplate> <EditItemTemplate> Organization Name: <asp:dropDownList id="org_id" DataSource='<%# load_dropdown_data("organization_company","org_id","org_name","Other") %>' DataValueField="org_id" DataTextField="org_name" runat="server" SelectedValue = '<%# DataBinder.Eval(Container.DataItem, "org_id")%>' /> </EditItemTemplate> </asp:TemplateColumn> </columns> </asp:datagrid> </form> Thanks! Drew ssoss Tag: Different kind of db connection Tag: 66024
  - 14
    - dataAdapter'rs command statements Do I need to fill all the 3 commands ( InsertCommand, DeleteCommand and UpdateCommand), even though I'm using only one of them ? Like if I wants to update records in db, I'm sure that I have to assign the UpdateCommand, in this scenario, do I need to assign the Insert and Delete statements also ? TIA Kishore Tag: Different kind of db connection Tag: 66019
  - 15
    - SqlDataReader recordsaffected Hi. Just reading about the sqldatareader object I am confused about the recordsaffected property. The example on the help docs use a procedure with some inserts and a select. Can I use a datareader object to run sql commands that does not return records? What is the advantage of using a datareader.recordsaffected instead of command.executenonquery, since the later also can give me the records affected? Regards, Chris Leffer *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...get rewarded for it! Tag: Different kind of db connection Tag: 65998
  - 16
    - Trouble clearing SqlParameters from my Command object (note - sorry for the crosspost - I sent to .vb thinking i was sending to .adonet). I implemented a very small, basic data access layer for my web application. It works just fine, except for this one bug. One of my methods returns an abstracted dataset. To accomodate X number of input parameters, I created a function signature that accepts a ParamArray of SqlParameters as well as the name of the stored proc. In the body of the function I loop through the param array and append each object to the Parameters collection of my Command object. The problem comes up when I try to append a SqlParameter object that I have already used in a previous call, that is also an argument for the next stored procedure. For example, I have: dim objParam1 as New SqlParameter("@userid", intUserid) dim objDS as DataSet objDS = objDAL.GetDataSet("storedprocname", objParam1) ' do some stuff with the dataset, now try a new query, different proc, same parameter objDS.clear() objDS = objDAL.GetDataSet("anotherprocname", objParam1) The error returned is something like "There is already a parameter named objParam1 in the SqlParametersCollcetion. Prior to adding each parameter, I check its count and, if greater than 0, remove each item before appending the new params. In debugging the count is always 0, so how can there be an SqlParameter object in its collection? ' create our command object with the passed in ProcedureName. ' and sqlparameter object. Dim objCommand As New SqlCommand(ProcedureName, Me.Connection) Dim sqlParam As SqlParameter objCommand.CommandType = CommandType.StoredProcedure Me.LocalCommand = objCommand If objCommand.Parameters.Count > 0 Then ' in case any parameters are hanging around, clear them out For Each sqlParam In objCommand.Parameters objCommand.Parameters.Remove(sqlParam) Next End If objCommand.Parameters.Clear() ' add the parameters passed in from the ParamArray ' into the command's parameters collection. For Each sqlParam In DataParameters sqlParam = objCommand.Parameters.Add(sqlParam) ' ERROR THROWN HERE Next What element am I missing please? This has me bending my brain pretty badly. Thank you in advance. Tag: Different kind of db connection Tag: 65997
  - 17
    - SqlDataAdatper Bug? I am new to .Net but have been unable to find anything about this in the newsgroups. Using C# and the following SQL stored procedure in my SqlDataAdapter: CREATE PROCEDURE HouseholdNextPrevious @PassedName varchar(150), @Direction varchar(4) AS Set NoCount on if @Direction = 'down' /* next household */ begin SELECT TOP 1 BuildingId, LabelName, Street1, Street2, City, StateProvince, Zipcode, Country, Phone, PhoneNote, Household.CellPhone, Fax, NoNewsletter, NoAppeal, NoCalendarAnnouncement, NoFlyer, Household.InactiveId, FirstConnectionId, Salutation, ICodeId, IncomeId, PrimaryContactId, Household.Note, Household.LastEditDate, SortName = isnull(LastName + ' ' + FirstName + ' ' + isnull(MiddleInitial,'') + Convert(varchar(40),Household.BuildingId),'aaaaa' + Convert(varchar(40),Household.BuildingId)) FROM Household LEFT OUTER JOIN Individual on IndividualId = PrimaryContactId where (isnull(LastName + ' ' + FirstName + ' ' + isnull(MiddleInitial,'') + Convert(varchar(40),Household.BuildingId),'aaaaa' + Convert(varchar(40),Household.BuildingId))) > @PassedName order by SortName asc end else /* previous household */ begin SELECT TOP 1 BuildingId, LabelName, Street1, Street2, City, StateProvince, Zipcode, Country, Phone, PhoneNote, Household.CellPhone, Fax, NoNewsletter, NoAppeal, NoCalendarAnnouncement, NoFlyer, Household.InactiveId, FirstConnectionId, Salutation, ICodeId, IncomeId, PrimaryContactId, Household.Note, Household.LastEditDate, SortName = isnull(LastName + ' ' + FirstName + ' ' + isnull(MiddleInitial,'') + Convert(varchar(40),Household.BuildingId),'aaaaa' + Convert(varchar(40),Household.BuildingId)) FROM Household LEFT OUTER JOIN Individual on IndividualId = PrimaryContactId where (isnull(LastName + ' ' + FirstName + ' ' + isnull(MiddleInitial,'') + Convert(varchar(40),Household.BuildingId),'aaaaa' + Convert(varchar(40),Household.BuildingId))) < @PassedName order by SortName desc end When I generate the dataset based on the above stored procedure, it constructs two tables (HouseholdNextPrevious and Table1) in the dataset which have identical columns. If I use an OledbDataAdapter, it only contructs one table in the dataset (HouseholdNextPrevious). Any insight as to why this is happening? Thanks, Tag: Different kind of db connection Tag: 65995
  - 18
    - Shouldn't An Exception Be Thrown - Establishing a Primary Key Hello, I was setting the primary key on a table which was a collection of 3 columns. I mispelled the name of the second column when I built the array of collumns when I created the array of collumns for the primary key. When I used the "dt.primarykey(myArrayOfKeys)" no exception was thrown, and rather then the primary key being a set of 3 columns, it was only a single column. When you make this type of mistake when setting foreign keys, that process throws and exception. Why the inconsistency? -----= Posted via Newsfeeds.Com, Uncensored Usenet News =----- http://www.newsfeeds.com - The #1 Newsgroup Service in the World! -----== Over 100,000 Newsgroups - 19 Different Servers! =----- Tag: Different kind of db connection Tag: 65994
  - 19
    - CommandTimeout property Clarification I have a stored proc that runs and calls others and sometimes the process runs for 3 to 5 minutes depending on traffic. ASP.NET - ADO.NET - Sql 2000 Code - dim cmdV as sqlcommand = new sqlcommand("ValidateUpdatePrograms",cnOAP) cnoAP.Open() cmdV.ExecuteNonQuery() cmdV = nothing cnoap.Close() Does the CommandTimeout property refer to the time to wait until a command starts processing or does it refer to how long a command can process before it is considered overdue? If it is the second case will sql actually stop in the middle of processing? Currently I am getting Application Unavailable in the browser after the Machine.config setting responseDeadlockInterval has been exceeded. I will set this higher. But I am wondering if sql is still processing and the web server times out, will sql continue processing until it is done? I have tested and it seems like it does. It seems like it will also stick with the command until it is done no mater how long it takes. I have not set the CommandTimeout. I am trying to figure out how to make sure sql doesn't stop. Thanks! Tag: Different kind of db connection Tag: 65991
  - 20
    - Connection Pools I have an app that I have recently been testing to try an determine the cause of this Timeout Expired issue. I am using the performance monitor to check the # of connection pools as well as the # number of pooled connections. When I start the app and the user logs in a pool & connection is created and all is well. However when I shut down the app the pool does not go away. Then if I start the app again another pool and connection are created and soon, and so on?? Does anyone have any idea how I should deal with this? Should the pool created by the app be detroyed when the app is no longer in memory. By the way I am using CLR .Net Data for the specific app, not _global. Tag: Different kind of db connection Tag: 65983
  - 21
    - DataTable schema changes I need to handle dynamic changes to a table's schema, even when there is already data present. It appears that the only thing supported by DataTable is to remove a column so I am pulling all the data out into a 2D array, performing my manipulations on the raw data, and then clearing out the table's Rows and Columns collections and attempting to recreate them. Basically, Rows.Clear(); Columns.Clear(); RebuildColumns(/*...*/); RebuildRows(/*...*/); Where I rebuild the columns from a separate list of schema parameters that I have available and then rebuild the rows from the 2D array of raw data that I originally pulled from the table. For a simple test I am trying to remove the third column from a four column table (something that I suppose I could have done simply via Columns.RemoveAt, but am trying this way as a test). The problem is that when I'm adding the rows back, I'm getting an exception thrown on adding the second row: System.IndexOutOfRangeException "Cannot find Column 3" System.Data.DataTable.InsertRow Can anyone shed some light on this for me? Thanks in advance. -- Thomas Brown Tag: Different kind of db connection Tag: 65982
  - 22
    - OleDbConnection.Open very slow on ASP.NET App running under XP??? Does anybody know why when connecting to an Oracle database from a ASP.NET web app running under Windows XP, the connection is very slow. It takes about 2 minutes to open the database connection. The same code running on a NT2000 machine executes in under 4 seconds. To test this, is very simple On an XP machine, create a new ASP.NET app and create a new OleDbConnection object. Assign a valid connection string and execute the Open statement. That is it. The connection string I used was: Private f_cConn As String = "Provider=MSDAORA.1;Password=JJ;User ID=JJ;Data Source=OLT" ANy help is greatly need and appreciated. Tag: Different kind of db connection Tag: 65981
  - 23
    - The same table (types) cannot be the child table in two nested relations. I have a Schema describing an XML feed i'm receiving. The problem is, when i load it i get the above error. In this schema i have several fields describing an article. Two of these fields(tables) are called videos and sounds. They both contain a complex type (table) called Types which contain from 0-unbound number of "type" elements. So the case is. Both the sounds and the videos nodes have types/type nodes, which won't map to my DataSet. I don't think i can get the xml provider to change the format, but is there any way i can add something to the schema to allow the "same table" twice? Thanks in advance Per Here is an example to describe the problem: <xs:element name="sounds"> <xs:complexType> <xs:sequence> <xs:element name="sound" minOccurs="0" maxOccurs="unbounded"> <xs:complexType> <xs:sequence>  <xs:element name="types" > <xs:complexType> <xs:sequence> <xs:element name="type" type="xs:string" maxOccurs="unbounded" minOccurs="0" /> </xs:sequence> </xs:complexType> </xs:element> </xs:sequence> </xs:complexType> </xs:element> </xs:sequence> </xs:complexType> </xs:element> <xs:element name="videos"> <xs:complexType> <xs:sequence> <xs:element name="video" minOccurs="0" maxOccurs="unbounded"> <xs:complexType> <xs:sequence>  <xs:element name="types" > <xs:complexType> <xs:sequence> <xs:element name="type" type="xs:string" maxOccurs="unbounded" minOccurs="0" /> </xs:sequence> </xs:complexType> </xs:element> </xs:sequence> </xs:complexType> </xs:element> </xs:sequence> </xs:complexType> </xs:element> Tag: Different kind of db connection Tag: 65980
  - 24
    - dataset.haschanges=false allthough change have been made I have the following problem: I have a dataset with one table. I bind the fields of the table to several entities like textboxes etc. Now I change the values of a row of the table through the textboxes. The value in the table of my dataset has changed (I checked it) but my dataset still has the status .haschanges=false??? Why? Regrads, Christoph Tag: Different kind of db connection Tag: 65975
  - 25
    - SQL String Connecting to MS Access via ADO I have an SQL string that im trying to use to connect to an Access DB im currently using the following string: SQLStr = "SELECT LEFT(LTRIM(RTRIM(Personal.postcode)),LEN(personal.postcode)-1) AS Expr1, LiveTracker.ID, LiveTracker.MortgageAppSubmitted, Closed.ID FROM ((Personal INNER JOIN PendingTracker ON Personal.ID = PendingTracker.ID) LEFT JOIN LiveTracker ON Personal.ID = LiveTracker.ID) LEFT JOIN Closed ON personal.ID = Closed.ID ORDER BY LEFT(LTRIM(RTRIM(Personal.postcode)),6);" the above currently works perfectly and i have no problems but it doesnt do exaclty as i want, what i would like it to do is this statement: SQLStr = "SELECT Left(Personal.postcode,Len(personal.postcode)-2) AS Expr1, LiveTracker.ID, LiveTracker.MortgageAppSubmitted, Closed.ID FROM ((Personal INNER JOIN PendingTracker ON Personal.ID = PendingTracker.ID) LEFT JOIN LiveTracker ON Personal.ID = LiveTracker.ID) LEFT JOIN Closed ON Personal.ID = Closed.ID ORDER BY personal.postcode;" the only difference between the two SQL statements is that the second statement takes 2 charachetrs from the end of postcode whereas the first statment only removes one! when i try to run the second statement I get the following error: An unhandled exception of type 'System.InvalidOperationException' occurred in system.data.dll Additional information: The provider could not determine the String value. For example, the row was just created, the default for the String column was not available, and the consumer had not yet set a new String value. any help with this would be greatly appreciated Regards Mike Fellows Tag: Different kind of db connection Tag: 65966
- Next
  - 1
    - difference between output and returnValue sqlParameter ? Hello ! Can someone please explain to me what the difference between "output" and "returnValue" as direction for sqlParameter in a stored Procedure ? Thanks, Lanz Tag: Different kind of db connection Tag: 65965
  - 2
    - COM+ vs ADO.NET I am a newbie in .NET, I am trying to implement Database access components which need to handle transaction management and concurrency control. I have been seeing that the COM+ provides functionalities on transaction management, but is the difference between the COM+ transactions and the transactions in ADO.NET? And which one should i use to get a better performance or which one is simpler to implement? Tag: Different kind of db connection Tag: 65964
  - 3
    - DataRow Position How can I find the DataRow position into the DataRowCollection when I have got the DataRow object after a call to DataTable.Find or Select (C#) Thanks Tag: Different kind of db connection Tag: 65961
  - 4
    - how can export datatable to excel how can export datatable to excel i try to use new excel application then fill data to excel but it very slow how can i to do export datatable to excel fast thanks Tag: Different kind of db connection Tag: 65960
  - 5
    - Is Data Binding for Drop Down box slow? Project is on ASP.NET+VB.NET. We are using many binded drop down boxes in the project. Page display is slow, is this because of binding of data? What are the alternate approaches please. Thanks, Raghavendra Narayana Tag: Different kind of db connection Tag: 65949
  - 6
    - Updating a DataTable as opposed to a DataSet Hi, I have loaded up some data into a DataTable as opposed to a Dataset. The DataAdapter allows this. I don't need all the associated stuff with the DataSet and this is why I have chosen the DataTable. However I'd like to update the changes to the DataTable to the database it was loaded from. The DataAdapter can update a dataset but not a datatable. How can I do this then without having to resort to a manual procedure. Does the version of the .NET framework I'm running make a difference. I have 1.0. Does 1.1 support updating of DataTables. Thanks, Nick Zdunic Tag: Different kind of db connection Tag: 65940
  - 7
    - param array and stored procedure call Is there any way to modify the following code so I can run it with any number of paramNames as well as any number of paramValues? So far it works with an array of paramValues, but since you can only pass a variable number of parameters in the last parameter of a method, I'm stumped. Perhaps the paramValues could be multidimensional? And a (?) has to be present for each paramName as well, correct? Thanks in advance. public DataSet returnStoredProc(string spName, string paramName, params Object[] paramValues) { OdbcDataAdapter _da = new OdbcDataAdapter(); DataSet _ds = new DataSet(); OdbcConnection cn = new OdbcConnection(connectionString); try { OdbcCommand _cmdSel = new OdbcCommand(); OdbcParameter prm = new OdbcParameter(); cn.Open(); _da.SelectCommand = _cmdSel; _cmdSel.CommandText = "{CALL " + spName + " (?)}"; _cmdSel.CommandType = CommandType.StoredProcedure; _cmdSel.Connection = cn; for (int x = 0; x < paramValues.Length; x++) _cmdSel.Parameters.Add("@" + paramName, paramValues[x]); _da.Fill(_ds); return _ds; cn.Close(); } } Tag: Different kind of db connection Tag: 65934
  - 8
    - Hello I need help about to use the component CrystalResport or Reports in C#......Yuni Tag: Different kind of db connection Tag: 65933
  - 9
    - ExecuteReader and output params Hi I am trying to run SP using ExecuteReader for SqlCommand object. SP has Output parameters that I add to Parameters collections but it seems that output parameter is always null. Debugging SP return not null values so it is not a problem with SP. Does ExecuteReader skips output parameters? Thanks, Shimon. Tag: Different kind of db connection Tag: 65925
  - 10
    - Excluding Noise Words from Search How can check if a search phrase contains a noise word and let the user about it so he/she can do search again without the noise word. Thanks, -- Dino Buljubasic Software Developer http://rivusglobal.com Tag: Different kind of db connection Tag: 65923
  - 11
    - Connection class Hi How can I create and call a class for a connection to my database? Code example would be great. Thanks Regards Tag: Different kind of db connection Tag: 65922
  - 12
    - RowFilter - Accent Insensitive with Strings Hello Folks! I have a SQL Server table column and two records. One column have "Porão" and the other "Porao". I want filter my dataview using the RowFilter property. example: dv.RowFilter = "column = 'Porao'" datagrid.datasource=dv datagrid.databind(); I need to see two records. But i see only one because the filter use accent sensitive when searching. Is there a way to configure the dataset for accent sensitive? Tks Robson Tag: Different kind of db connection Tag: 65920
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  - 14
    - DataBinding Dataset from a WebService Hi, I have some problem Binding a dataSet that come from a method in a WebService I created. My Web forms call the function from the WebService and receive the dataSet. How can I bind this dataSet to a dataList and some Textfields. What I want to do is select the result in the dataList then the selected result appears in textField so I can update those field. Does anyone have a clue? CG Tag: Different kind of db connection Tag: 65912
  - 15
    - RowState Issue In using a datagrid, when I modify the second row in the grid, the first row is also taking on a rowstate of modified, even though it has not been touched. I am sure of this, as checking rowstate prior to modifying the second row shows the first row to be Unchanged. Anyone have any clues about this issue? Thanks. JT Tag: Different kind of db connection Tag: 65908
  - 16
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  - 17
    - How to Bind ListBox for Windows Form(VB.NET) Hi, 1)I have List Box which displays all user list, When I double click on User , I am displaying User Information on the right hand side Text Boxes , But In Order to Retrive the values I can't query with User Name because there are duplicate names , So I Want to find details about the user with his/her ID#. How would I do that when I bind the ListBox at the FormLoad event. 2)How could I Call another form from other form by using formname.show ( used to be in VB 6). thanks, Saurabh Tag: Different kind of db connection Tag: 65903
  - 18
    - DataView Filter Not working I am using the following code to filter a DataView and then put the dataview back into a DataSet. I've verified that strFilter contains 683 values. The dataview initially has 1306 records before the filter. However, the resulting dataset that comes out has all 1306 rows. How is this possible since I'm filtering on 683 unique values? I'd appreciate any help -Tim //create a dataview for the dataset //DataTable oDT = oDS.Tables["Results"]; DataView oDV = new DataView(oDS.Tables["Results"]); DataTable oDT = new DataTable(); try { if(strFilter != "") { //filter the dataview with the previous work ids oDV.RowFilter = "WorkID IN (" + strFilter + ")"; } } catch(Exception err) { Response.Write("Error: " + err.Message.ToString()); } //Convert the DataView back to a DataSet oDT = oDV.Table.Copy(); oDS = new DataSet(oDV.Table.TableName); oDS.Tables.Add(oDT); Tag: Different kind of db connection Tag: 65902
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    - DataAdapter update method fails Hi. I got a problem with the OleDbDataAdapter object in .Net. The case is: I fill a dataset with data from an XML-file. This works fine. I then want to store the data into a database. This also seems to work fine. The problem ouccurs when I try to update the data in the table. If I read the same XML-file into the dataset and perform the Update method of the dataadapter it throws this Exception: ORA-00001: unique constraint (SOME.TABLE) violated Source code: ################################################################ Dim cb As New OleDbCommandBuilder(OleDbDataAdapter1) DataSet1.ReadXmlSchema( _ "H:\temp\foo.xsd") DataSet1.ReadXml( _ "H:\temp\foo.xml") OleDbDataAdapter1.Update(DataSet1) Catch ex As Exception Console.WriteLine(ex.Message) End Try ################################################################ It seem to me that the dataadapter trys to do an insert and fails because there already is a row with the same values in the table. Anyone got a clue how to solve this? Lars Tag: Different kind of db connection Tag: 65894
  - 21
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  - 22
    - How to lock a table or a database using VB.NET and ADO.NET with SQL Server 2000? Hi, I have a few question regarding Locking question. I'm using VB.NET and my Database is SQL Server 2000. 1) Certain part of my application, I need to lock the whole table to prevent other user from using it, how should I lock it to prevent user access the table. 2) There's one part of my application, I need to lock the whole database (block user) when I want to transfer the records from the working table to the storage table then release the lock after I'm done. How should I go about doing it? Regards Vanessa Tag: Different kind of db connection Tag: 65891
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    - SqlConnection I do an "SqlConnection" open and then a close, but the connection to the SQL server is not released. If I do a SP_WHO on the server I still see the connection. How to I get the connection to drop? Thanks -- CWee Tag: Different kind of db connection Tag: 65887
  - 24
    - renaming an element in a schema/dataset I read some xml data through a stream, and pass it to a dataset for it to read. First i initialize the dataset with an xml schema. The schema matches the data i get from the stream, but i want to change the name of some of the columns. Normally i would add some mappings to the dataadapter, but since i'm not using a dataadapter (there is no database involved - i get the xml data from a webservice) i don't know how. Is there any way you can define your schema, so it reads the correct data, but renames the column kinda like this: <xs:element name="date" type="xs:string" renamed-to="start-date" /> As far as i can see, there is no such attribute on the xs:element - or any other way to do it? All i want to do, is rename the column name and still (preferably) keep the relations to other tables/columns, without having to loop through the dataset creating a new one with different column names. Thanks! Tag: Different kind of db connection Tag: 65881
  - 25
    - Deserialize problem with OracleException On August 19, 2003, a reader discovered that he couldn't deserialize an OracleException. He began a thread with Scot Rose of Microsoft where he described the nature of the problem. The reader wrote, "We have narrowed it down to the constructor OracleException (System.Runtime.Serialization.SerializationInfo si,System.Runtime.Serialization.StreamingContext sc), which looks for members "message" and "source", but the GetObjectData (...) method in the base (System.Exception) uses the strings "Member" and "Source". Since the element lookup in SerializationInfo is case sensistive, GetElement() and FindElement() fail and the OracleException deserialize throws an exception." Scot Rose asked for a small project and the reader provided one. There is no record of a response from MS. So here's another project, a console app, that demonstrates the problem. I am running framework 1.0 with a "hotfix" version of System.Data.OracleClient.dll, version 1.0.1088.0 that fixes some of the MANY bugs in this provider. Can someone from MS follow-up on this bug and provide a work-around? Imports System.IO Imports System.Data.OracleClient Imports System.Runtime.Serialization Imports System.Runtime.Serialization.Formatters.Binary Module Module1 Sub Main() Dim conn As New OracleConnection("Data Source=ussxt6;User Id=foresight_mcp;Password=xxx") Dim cmd As New OracleCommand("select * from blah_blah", conn) ' will throw "Table or View does not exist" Dim reader As OracleDataReader Try conn.Open() reader = cmd.ExecuteReader() Catch e As OracleException Dim formatter As New BinaryFormatter() Dim stream As Stream = File.Open ("c:\temp\foo.bin", IO.FileMode.Create, IO.FileAccess.ReadWrite) formatter.Serialize(stream, e) stream.Close() stream = File.Open("c:\temp\foo.bin", FileMode.Open, FileAccess.Read) Try Dim obj As Object = formatter.Deserialize (stream) Catch xx As Exception MsgBox(xx.ToString()) End Try Dim phoenix As OracleException = CType (formatter.Deserialize(stream), OracleException) MsgBox(phoenix.ToString()) Finally If Not reader Is Nothing Then reader.Close() If Not conn Is Nothing Then conn.Close() End Try End Sub End Module Tag: Different kind of db connection Tag: 65872

hallo everybody

Does anyone know if it's possible to connect to a
different database from access and sql server

I work with perversive db and dont know how to connect to
it. there are only access and sql server adapters
available.

if it so could anyone tell me how to do it?

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Re: Different kind of db connection by Paul

Paul
Wed Sep 17 08:14:58 CDT 2003

On Wed, 17 Sep 2003 05:34:20 -0700, "greg" <gregthechamp@interia.pl> wrote:

¤ hallo everybody
¤
¤ Does anyone know if it's possible to connect to a
¤ different database from access and sql server
¤
¤ I work with perversive db and dont know how to connect to
¤ it. there are only access and sql server adapters
¤ available.
¤
¤ if it so could anyone tell me how to do it?

It depends on whether you are using the Pervasive OLEDB or ODBC driver. You can use the native .NET
OLEDB library with the Pervasive OLEDB driver, or the native ODBC.NET library with the Pervasive
ODBC driver. I believe that Pervasive recommends using the OLEDB V8 driver

If you are using version 1.0 (VS 2002) of the framework you will need to download the ODBC.NET
library (it's included with version 1.1 of the framework).

http://www.microsoft.com/downloads/details.aspx?FamilyID=6ccd8427-1017-4f33-a062-d165078e32b1&displaylang=en

http://www.pervasive.com/support/faq3.asp#OleDBProvider

Paul ~~~ pclement@ameritech.net
Microsoft MVP (Visual Basic)

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