Compact & Repair in Access from ADO.NET

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  - 1
    - Column types in a System.DataTable Hello, How does a System.DataTable determine the datatypes of its columns when filled using a select statement. If I fill a datatable using the sample table/data, Select * from myTest (MSS 2K), below the test1 column is defined as a decimal. Why wouldn't it be defined as a Int64? Or can this be controlled? Sample Table and Data: ================ Create Table myTest ( test1 numeric(10,0) not null ) Insert Into myTest Values ( 1, 'value 1' ) Insert Into myTest Values ( 2, 'value 2' ) Thanks, Rob Panosh Tag: Compact & Repair in Access from ADO.NET Tag: 77772
  - 2
    - Calculated Columns in a DataTable Are there any plans to include the ability to have user defined functions in Calculated Columns in data tables? If not do you know who I can contact to put in a feature request? Tag: Compact & Repair in Access from ADO.NET Tag: 77769
  - 3
    - Find in DataView using a non sorting column Dear Sirs. in VS 2002. was no direct way to find in DataView if you not find by a sorted column. is it enchansed in vs 2003 ? plz provide me an example Thank you in advance. Tag: Compact & Repair in Access from ADO.NET Tag: 77762
  - 4
    - Validating Data During Row Changes I want to stay on a row in the table until all validations are OK. For this I use RowChanging event of DataTable and throw an exception if validation is not OK. If I throw an exception without catching, the program ends. If I throw an exception and catch this exception the messagebox with error is show and then position changes. How to stop moving to another position ? Thank you Tag: Compact & Repair in Access from ADO.NET Tag: 77750
  - 5
    - How to enumerate sql server names/instances on the netork Visual Studio 2003, C#, SQL Server 2000 How to enumerate SQL Server names/instances on the network for a WinForm application ? Thank you Tag: Compact & Repair in Access from ADO.NET Tag: 77749
  - 6
    - multiple recordsets in ms access h i m tring to create multiple recordsets from ms access thru vb.ne my string i str="select name from jobs;select col2 from jobs but it gves me erro "Characters found after end of SQL statement wat to d amrita thnx Tag: Compact & Repair in Access from ADO.NET Tag: 77748
  - 7
    - GUIDs as keys - definition and use Hello, I want to use GUIDs as keys for records in a number of tables for a database I'm designing. The reason- I want to be able to "merge" records from different site installations in the future and I don't want key conflicts. Starting with the schema design (sqlserver)- what is the best "type" to pick to hold the GUID? I'm thinking varchar of length 36. After I've designed the schema in SQLServer, I plan to use the server explorer and create a dataset definition for use in .Net. - Any tips for dealing with GUIDS with regard to the code the designer generates? i.e for creating/modifying and deleting records? Thanks in advance, Gene Tag: Compact & Repair in Access from ADO.NET Tag: 77746
  - 8
    - ADO.NET: using xml as a database, adding rows to the xmlfile Hi, I've got a debug/learn function for doing my xml thingie. I simply want to append data to an xml file. This confuses me, i've looked at xmldocument, xmldatadocument and from what i understand a DataSet is a flexible and "easy" (if you know how) way to work with xml files. I've worked alot with ADO in VB6 so this seemed tempting (i'm still a .net noob or NOOB) I've managed to create a schema for my table and i think i know how to add the data correctly but i can't manage to update my data back to my DataSet and write the DataSet as an XMLFile. I've looked on the DataAdapter but i end up wondering how do i make an OleDB conn to my xml file and i resemble nooo this seems stupid and bigfoot print'ed since they say .net and xml is like bread and butter. I just want to use an xml file as a simple database for my app. Would anyone be so kind to help me out with a updatetable thingie ? My Code fails on the AcceptChanges which i suppose is because my DataRow isn't written back to the DataSet but how do i do that ? Please ignore the bad naming convention this code is mixed with a lot copy paste from various examples... none covers how to work with just a dataset and an xml file.. I think i fail to see the wood because of the forest if you know what i mean :) Public Function doCreateNewXmlfile() Dim ds As New DataSet Dim col As DataColumn Dim oDataRow As DataRow 'Create the table structure. With ds.Tables.Add("Routers") col = .Columns.Add("IPAddr", GetType(String)) col.MaxLength = 15 col = .Columns.Add("HostName", GetType(String)) col.MaxLength = 90 col = .Columns.Add("LogFileName", GetType(String)) col.MaxLength = 30 End With ' Save our schema representing our table structure Dim oFileStream As New System.IO.FileStream(Me.setXmlIpTableFileSchemaName, FileMode.Create) ds.WriteXmlSchema(oFileStream) oFileStream.Close() oFileStream = Nothing ' Create some data in our xmldatabase Dim row As DataRow = ds.Tables("Routers").NewRow row("IPAddr") = "192.168.1.1" row("HostName") = "tower" row("LogFileName") = "tower_Log" row.AcceptChanges() oFileStream = New System.IO.FileStream(Me.setXmlIpTableFileName, FileMode.Create) ds.WriteXml(oFileStream) oFileStream.Close() oFileStream = Nothing End Function Thanks a lot /Kai Tag: Compact & Repair in Access from ADO.NET Tag: 77745
  - 9
    - Dataset binding to comboboxes - As many items as records?? Hi All, I have been having a hard time figuring how to approach a problem and was hoping I might be able to get some assistance. Here is my situation. I have a dataset that is based on a table in my SQL server database. I am using Databinding to bind the dataset to a series of controls on my form. A few of these controls are comboboxes. One of the comboboxes is bound the the field in the dataset that is my primary key (it's called ID). This works well for me because I can scroll through the combobox and select whichever record I want to deal with and all the controls are updated to that record when I select it. The problem however, resides with another combobox which is bound to a field in the database that can only have two (2) possible choices, Yes or No. I was expecting that this combobox would only consist of two possible choices however I am finding that there are as many "items" in the combobox as there are records in the database. Granted there are only two possible "values" (Yes or No) but they are repeated throughout the combobox. Any idea what I am doing wrong? Has anyone seen this before? Thanks in advance for any assistance! - Derek Tag: Compact & Repair in Access from ADO.NET Tag: 77743
  - 10
    - Cast DataView as a DataTable I'm using a third-party tool that takes a DataTable as a parameter. I really need to pass it a DataView instead. When I try to explicitly cast the DataView as a DataTable I get an error that they aren't compatible data types. Does anyone have a suggestion on how to do this? My last resort is to create a new DataTable object and copy the rows from the DataView into the DataTable. But this is an ugly hack and I really hope there is a better solution. Thanks. Tag: Compact & Repair in Access from ADO.NET Tag: 77741
  - 11
    - Multiple Parents Ok, I've already figured out that its not allowed to have 2 (or more) parents to 1 child table in .NET. (unless I'm totally misinformed). http://support.microsoft.com/default.aspx?scid=kb;en-us;325695 So, how do you get around it. Surely there are plenty of you who have run into this. In my case I have 3 tables (more actually but 3 will suffice for now): PurchaseOrders, Tickets, and Items. Should be a pretty classic example. A customer walks into the shop and places an order for various items which come from several different vendors, therefore these items will belong to several different PurchaseOrders. A Ticket is created for the customer, listing all the items. Thus, a Tickets to Items relationship is implied. However, at the end of the day (or end of the week, etc) the purchaser draws up a series of PurchaseOrders. The PurchaseOrder will have all the items from a particular vendor, for all the Tickets that were generated that day (or week, etc). So, the PurchaseOrder Table needs a relationship with Items as well. Thus, 2 parents, same child. How does ADO.NET handle this? How do I handle this? Thanks, Blake Tag: Compact & Repair in Access from ADO.NET Tag: 77739
  - 12
    - Add new row to Access database Hi all, I wrote a simple application using C# & Ms. Access DB. 1. Read all record from database into dataset and perform searching functionality. (work) 2. I want to add new record into the database if searching fail. (problem) Here is the procedure: MyTable has 2 columns only (myKey | myValue) where myKey is the PK and myValue column is allow null. ...C# coding private OleDbDataAdapter da; private DataSet dsMyTable; AddRow(string newKey){ DataTable dt = dsMyTable.Tables["MyTable"]; DataRow irow = dt.NewRow(); irow[0] = newKey; dt.Rows.Add(irow); da.Update(dsMyTable,"MyTable"); } there was no error. But when I check in MyTable I couldn't find new record added ??!!! Please advices, Sokun Tag: Compact & Repair in Access from ADO.NET Tag: 77738
  - 13
    - In memory of a friend! Hello all! Not sure how this should be posted. If I understand my reading. i'll need Visual Basic .NET, ASP .NET, and ADO .NET. So I've posted this thread in all three newsgroups. I apologize up front if this was a mistake. A little background. I've got a large collection of movies in VHS and DVD formats. I've been categorizing them like they were in a database (i.e. Movie Title, Director(s), Writer(s), Cast, etc.), but using a simple text file. I have a MS Windows SharePoint Services (WSS) site, and I thought it would be a great idea to finally put the info in a formal database (I'm using SQL Server 2000 as the underlying database for WSS). A very close friend volunteered to take on this project and come up with a way to query for particular movies. His plan was to use Visual Basic .NET and what else I'm not sure. Well, the week before Xmas my friend died unexpectently. And to his memory I'd like to complete the project on my own, and maybe a little help from a couple of newsgroups. I'm just not sure where to start? I've been doing some reading and as I mentioned above, it seems I'm going to need Visual Basic .NET along with both ASP .NET and ADO .NET. Am I right in that assumption? How I envision the movie portion of the WSS site! There'd be a quick-launch link on the main page. This would take you to a page where half would be setup to search the database for a particular movie. You would put in your search criteria, Movie Title (or what you thought the title was), actor(s), or Director(s). Clicking the [SEARCH] button would bring up another page with the search results. The results of course would be hotlinked movie titles, movies that actor(s) starred, or Director(s) directed. Clicking on one of these hotlinks would take you to that particular movie page on the server. Does that make sense? The bottom of this initial WSS page would also list the alphabet. Maybe 4 rows of 5 and 1 row of 6. Clicking on these hotlinks would take you to a page with that particular alphabetical listing of movies with hotlinks to the particular movie page. I've been copying the small movie posters from imdb.com, and I've found a place where I can get movie trailers, both of which this movie page would house along with all of the other movie info. I know I'm being overly long, but I wanted to explain exactly what the plan was. Now, where do I start? I've got a little experience with Visual Basic .NET, probably enough to get me in trouble, but what else do I need to complete this project? Any help would be greatly appreciated! To the memory of JB! TIA Hodgepodge Tag: Compact & Repair in Access from ADO.NET Tag: 77736
  - 14
    - Related records - is a datarelation necessary I have a table named ProposedCosts and another table named AdditionalCosts. AdditionalCosts has a foriegn key to the ProposedCostID in the ProposedCost table. When I retrieve records out of the database, I use a SQLDAtaAdapter and the .Fill method to fill a 'ProposedCost' datatable and a 'AdditionalCost' datatable, both tables are in the same dataset. From the front end, if I wanted to add a new row to ProposedCost, that isn't any problem except for the fact that it does not generate a ProposedCostID (this is an identity key in the database). The problem is that if I want to create an 'additional cost' record, I have no ProposedCostID. What is the best way to handle a situation like this? I thought about going back to the database with the dataset and somehow adding a row to the datatable that way, but then when I finally do, do an update, won't it think the row I added is a 'new' row and not an update? Thanks. STom Tag: Compact & Repair in Access from ADO.NET Tag: 77735
  - 15
    - Dump DataTable to text How can I dump my datatable to a comma delimited (or tab delimited) text file in VB.NET? I was thinking I could simply call an (external) SQL 2000 DTS package, but since I have the data in the Datatable, it would be a waste to requery. Div Tag: Compact & Repair in Access from ADO.NET Tag: 77732
  - 16
    - ms access & ado.net Hello I have been developping datadriven applications for a while now. I used sql server and msde. but I am on the hunt for an integrated database for a web application I want to write: what I mean is I want to have a file based DB engine (if possible) and include the file in a directory of the web app and access it. I just do not want to deal with the install of a service when redistibuting the app. I am considering ms access but I want to know if I could have multiple connections to it via ado.net since the web app will have multiple users hiting it. I guess that my first question. the other one is : Does any body know of an file integrated DB engine ? I am looking at vistaDB and deseperatley looking for some xml based ones ? Tag: Compact & Repair in Access from ADO.NET Tag: 77727
  - 17
    - 'Convert' is not a member of 'Boolean' I used the designer in VS.NET 2003 to create a dataset. Within that dataset, there is an element "Tags", with a primary key and relationship: <xs:element name="Tags"> <xs:complexType> <xs:sequence> <xs:element name="TagName" type="xs:string" minOccurs="0" /> <xs:element name="TagDesc" type="xs:string" minOccurs="0" /> <xs:element name="System" type="xs:boolean" minOccurs="0" /> <xs:element name="FieldType" type="xs:string" minOccurs="0" /> <xs:element name="FieldLength" type="xs:integer" minOccurs="0" /> <xs:element name="Decimal" type="xs:integer" minOccurs="0" /> </xs:sequence> </xs:complexType> </xs:element> <xs:key name="pkTags" msdata:PrimaryKey="true"> <xs:selector xpath=".//mstns:Tags" /> <xs:field xpath="mstns:TagName" /> </xs:key> <xs:keyref name="TagsLabelsTags" refer="pkTags" msdata:DeleteRule="Cascade"> <xs:selector xpath=".//mstns:LabelsTags" /> <xs:field xpath="mstns:TagName" /> </xs:keyref> Nothing special, right? When I attempt to build the project I get a series of compile errors in the code behind: 'Convert' is not a member of 'Boolean'. Public Sub SetTagDescNull() Me(Me.tableTags.TagDescColumn) = System.Convert.DBNull <--- Here End Sub There is one error for each of the non-key fields, all in the Set_Field_Null() subroutines. I'm lost. Any ideas? Tag: Compact & Repair in Access from ADO.NET Tag: 77726
  - 18
    - SQL Server basics I have a Dataset containing a DataTable (say, 'dt1') that has all the fields that are contained in a SQL Server database's table. In addition, it contains a field (let's call it 'HasItems') of type boolean. I want to populate 'dt1' with all the records in the SQL Server table, and populate the 'HasItems' field with True if matching records exist in another SQL Server table (actually a view), and False if no matching records exist. I could do this easily in Access, but I'm new to SQL Server, and need to know the best way to go about it. (The way I'm doing it now has me thinking, "First the earth cooled, then the dinosaurs came..."). Specific help would be appreciated, but also a reference I could use to ramp up my SQL Server skills would be nice too. Thanks. Tag: Compact & Repair in Access from ADO.NET Tag: 77723
  - 19
    - Error: Cannot insert a non-null value into a timestamp column Hi, I have a typed dataset with tables including timestamp type field, when ready to commit the change back to the SQL server trough the data adapter and my storeprocedure, I receive the error. How can I force SQL server inside a storeprocedure a NULL value for that timestamp field? Is there a better solution from my c# code? I try the following, ---------------------------------------------------------------------------- ALTER PROCEDURE dbo.InsertUser ( @last_name char(25), @first_name char(20), @phone char(20), @login_name char(30), @email char(100), @last_login datetime, @datemodif datetime, @timestamp timestamp, @user_id uniqueidentifier OUTPUT ) AS SET NOCOUNT OFF; SET @user_id = NEWID() SET @timestamp = NULL INSERT INTO [user] (user_id, last_name, first_name, phone, login_name, email, last_login, timestamp, datemodif) VALUES (@user_id, @last_name, @first_name, @phone, @login_name, @email, @last_login, @timestamp, @datemodif); SELECT user_id, last_name, first_name, phone, login_name, email, last_login, timestamp, datemodif FROM [user] WHERE (user_id = @user_id) Tag: Compact & Repair in Access from ADO.NET Tag: 77714
  - 20
    - login failure msg Just wondering if anyone knows what might be causing this login failure. I used the data-adapter wizard and selected use an existing connection(also tried new connection that test ok). I selected use existing stored procedure, for the select operation selected the stored procedure I want to use. It created the adapter and also an SQLconnection on the page. So for some reason am getting this login failure. I am able to connect to the dbase in the solution explorer and when I look at the connection string in the data adapter I noticed there is no password value. I have workstation id="xxxxxx";packet size=4096;user id=xxxxxx;data source="xxxx";persist security info=False;initial catalog=Vehicle_Mileage here is the error message. Login failed for user 'MileageWeb'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Login failed for user 'MileageWeb'. Source Error:= line 72 Line 70: Me.SqlDataAdapter1.SelectCommand().Parameters("@EndDate").Value() = "1/6/2003" Line 71: Me.SqlDataAdapter1.SelectCommand().Parameters("@StartDate").Value() = "1/1/2003" Line 72: SqlDataAdapter1.Fill(ds_vhist, "VehicleReservation") Thanks Paul. Tag: Compact & Repair in Access from ADO.NET Tag: 77711
  - 21
    - Converting Recordset to DataView I originally posted this question to the vb.net newsgroup, but it was suggested that I re-post here. I have an application that was converted from VB6 to .Net. The app uses a data access layer that returns data as disconnected recordsets. I'm adding new functionality to the app and want to use .Net controls and data binding. So, I'm converting a recordset to a dataview that can be bound to a listbox control. I'm doing this conversion via a data adapter using the following code: Public Shared Function GetViewFromRS(ByVal pRS As ADODB.Recordset) _ As DataView Dim sAdapter As OleDb.OleDbDataAdapter = New OleDb.OleDbDataAdapter Dim sTable As System.Data.DataTable = New DataTable sAdapter.Fill(sTable, pRS) GetViewFromRS = New DataView(sTable) End Function So far so good. The first time I call this function it works perfectly. However, I need to call it multiple times to update the DataView as the recordset is modified. The problem is that subsequent calls to this function for the same recordset always return a DataView that has no rows (Count = 0). Can anyone explain why this problem is occuring and how I might work around it? Thank you. Kees VanTilburg VanTilburg Enterprises Tag: Compact & Repair in Access from ADO.NET Tag: 77710
  - 22
    - ReadXML Dataset throws Insert Into error I'm in the process of learning ADO.net with Vb.Net and I've been stumped by the following problem. I created an XML file of an Access Table that is filled with 400 records (using .WriteXml("c:\HospitalList.xml", XmlWriteMode.WriteSchema)). I then purged the table of all the records, I thought I should be simply able to repopulate the table with the XML file, but when ever I try I get a "Syntax Error in Insert Into Statement". I'm allowing the DataAdapter to create the Insert command, here is what is being created: CommandText: "INSERT INTO HospitalList( Index , HospitalName , TransferAgency , Visible , HospCode , StateIndex ) VALUES ( ? , ? , ? , ? , ? , ? ) Thanks for you help, code belo Andy Moye ------Code snipet--- Dim strConnection As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & "C:\Working_D\Lists.mdb Dim cn As OleDbConnection = New OleDbConnection(strConnection cn.Open( Dim strSelect As String = "SELECT * FROM HospitalList Dim dscmd As New OleDbDataAdapter(strSelect, cn ' Load a data set Dim ds As New DataSe Dim dsXML As New DataSe ' Set the data adapter object's UPDATE, INSERT, and DELET ' commands. Use the SqlCommandBuilder class's ability to auto ' generate these commands from the SELECT comman Dim autogen As New OleDbCommandBuilder(dscmd 'Simply fills an empty DS with the Select Statemen 'dscmd.Fill(ds, "HospitalList" 'OR Fills the Data set with the Scehma only, no dat dscmd.FillSchema(ds, SchemaType.Source, "HospitalList" dscmd.Fill(ds, "HospitalList" ds.ReadXml("C:\hospitallist.xml", XmlReadMode.ReadSchema dt = ds.Tables.Item("HospitalList" 'Simply do this to see if any records are flagged as change Dim dt2 As DataTable = dt.GetChanges(DataRowState.Added MsgBox("Rows Added " & dt2.Rows.Count dscmd.Update(ds, "HospitalList" Tag: Compact & Repair in Access from ADO.NET Tag: 77709
  - 23
    - Displaying Enumerated DB Integers as Strings In DataGrid Hi Quite a banal problem... But for some reason I have found no elegant solution.. I have enumerated integer values in my DB, and I would like to use DataGrid for displaying the contents of the DataSet (filled from the DB, of course) including displaying meaningful text strings for the enumerated integer values There are several levels in which this issue may be handled, So.. 1) Is there any way to force use of a specific user-defined type, which can be converted to/from a DB type (Int for instance) when generating typed DataSet? I mean possibility to use a user-defined type (Enum or other class, minding the conversion possibilities) in the XSD schema 2) Is there a simple way to force the DataGrid to perform conversions from integer values to strings, through using enums or something? (Without implementing some custom monstrosity DataGridColumnStyle or something) 3) I hate to think of putting conversions and giving the DataGrid other DataTable with converted string values.. Thank you. Tag: Compact & Repair in Access from ADO.NET Tag: 77708
  - 24
    - Getting changes from the database I'm using a DataAdapter to Update and Synchronize with the database. When I do a Fill on my dataAdapter I get the changed and new records from the database (changed by other users) into my dataset but not those which have been deleted at the database. Is this the way the DataAdapter should work (don't synchronize the deleted records from the database to the dataset) or is it my fault? If this is the way the DataAdapter act's what can be done, do get completely in synch? If I do a clear on my dataset before invoking the Fill method, my databinding get's lost for a Moment, because the dataset is completely rebuild. Thanks. Tag: Compact & Repair in Access from ADO.NET Tag: 77703
  - 25
    - insert decimal in Access Hallo Im learning VB.net 2003 and now I like to insert a decimal in Access, but the number 10,25 is in Access 1025. The Access field is also decimal with 2 digets behind. I think it will be on the regional settings, because whenn I try with 10,25 then it works. But my variable is always format as 10,25. What must I do? Can anyone help me? Tag: Compact & Repair in Access from ADO.NET Tag: 77691
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    - Datareader passed ByVal - OOP Basics question Hi All, I've a big doubt about reference to object destruction. In the test below I call 2 times a sub passing a datareader in 2 different ways. Who can tell me if datareader is destroyed in both cases and so connection closed (using dr behavior)? *-*-*-* Case 1 *-*-*-* Dim cm As SqlCommand Dim dr As SqlDataReader = cm.ExecuteReader(CommandBehavior.CloseConnection) ' Datareader is passed ByVal to MySub ' I have to close "dr" here and "otherdr" in MySub MySub(dr) dr.Close() dr = Nothing *-*-*-* Case 2 *-*-*-* Dim cm As SqlCommand ' No reference to datareader exist (?) at this level, ' I have only to close "otherdr" in MySub ? MySub(cm.ExecuteReader(CommandBehavior.CloseConnection)) *-*-*-* MySub *-*-*-* Sub MySub(ByVal otherdr As SqlDataReader) While otherdr.Read ' Do something End While otherdr.Close() otherdr = Nothing End Sub -- Giulio Tag: Compact & Repair in Access from ADO.NET Tag: 77687
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    - Newbie: Adding new rows to dataset Hi, I have a data-entry type form I created with textboxes bound to a dataset. I can successfully pull all the correct information up and change any existing data, and navigate through each record using the BindingManagerBase.Position. What I'm trying to do now is add a row to the dataset and then move to that row with the form to add new information. I've tried declaring a new row and adding it to the dataset, as well as doing BindingManagerBase.AddNew. Each of these adds a row to the dataset, but I can't get it to show on the form. When I close the form, the database is updated, and the new row appears in the database table correctly. How do I get the form to show the added row? Thanks, Nathan Tag: Compact & Repair in Access from ADO.NET Tag: 77682
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    - Databinding question hi all, Can we call our procedures when databinding is in process. I want to check all the checkboxes in a checkboxlist control while data is coming from dataset. I can do this after the binding is done.. and manully loooping through the checkboxlist control and checking all the checkbox.. but i want to ask if there's better way to do it.. thanks Noor Tag: Compact & Repair in Access from ADO.NET Tag: 77678
  - 4
    - Working with a dataset I have a dataset with tables in it that i have filled from my database. If i want to find the Max value from a column in my dataset how do i do this? ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! >100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- Tag: Compact & Repair in Access from ADO.NET Tag: 77675
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    - UTF8 Character Set issues with Oracle Provider We are building an application with VB.NET on the .NET Framework 1.1 and the .NET Managed Provider for Oracle. We are connecting to an Oracle 9.2.0 server on HP-UX using the 8.1.7 client. The character set on the server instance is "AL32-UTF8". When we call OracleCommandBuilder.DeriveParameters(), we get the following exception: System.Data.OracleClient.OracleException: ORA-06550: line 1, column 72: PLS-00553: character set name is not recognized ORA-06550: line 0, column 0: PL/SQL: Compilation unit analysis terminated KB 322158 seems to indicate that there are some issues when UTF character sets and NCHAR, NVARCHAR2, or NCLOB data types with the Oracle 8.1.7 client. In our case, we are using standard CHAR, VARCHAR2, and CLOB data types. If the Oracle client is upgraded to 9.2, the exception is not thrown. However, we would like to avoid upgrading the Oracle client, as there is a large number of machines with the 8.1.7 client already installed. Can anyone else shed some additional light on the issue? Thanks, Brian Baker -- Microsoft MVP -- ASP / ASP.NET Please post responses to the group Tag: Compact & Repair in Access from ADO.NET Tag: 77662
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    - GROUP BY date I think I need to format the date in the table when I use GROUP by to group the dates. The table has date and time stamp but I need it to group by the date alone without the time stamp. How do I format the date field in the SQL statement using SQL Server? I was able to do it in MS ACCESS but it is different in SQL Server then MS ACCESS or .net then VB6. The old way was "Select sum(tot) as total, dte from tblName group by format(dte, 'mm/dd/yyyy') " Thanks Tag: Compact & Repair in Access from ADO.NET Tag: 77649
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    - passing input parameter to sql server sproc I have a very simple Stored Procedure that isn't working for me: CREATE PROCEDURE FindTutors ( @LastName NVarChar ) As ( SELECT fn, ln FROM main WHERE ln = @LastName ) GO Very simple; just trying to pass the @LastName parameter from my ASP.NET code. Still, whenever I click the button that is supposed to show all results in a datagrid, nothing comes up. I have altered the Sproc to just be "SELECT fn, ln FROM Main WHERE ln = 'Damon' " and it works fine then - so I know it's a matter of passing this parameter. Here is my codebehind - anyone have any ideas? Public Sub FindTutors(ByVal sender As Object, ByVal e As EventArgs) Handles btnFind.Click Dim cn As SqlConnection = New SqlConnection(ConfigurationSettings.AppSettings("ConnString")) Dim Cmd As SqlCommand = New SqlCommand("FindTutors", cn) Cmd.CommandType = CommandType.StoredProcedure Cmd.Parameters.Add("@LastName", SqlDbType.NVarChar).Value() = txtLastName.Text.ToString() 'Cmd.Parameters.Add("@LastName", txtLastName.Text) cn.Open() Dim rdrContent As SqlDataReader gridTutors.DataSource = Cmd.ExecuteReader() gridTutors.DataBind() cn.Close() End Sub ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! >100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- Tag: Compact & Repair in Access from ADO.NET Tag: 77648
  - 8
    - Filling dataset from text file. I am getting data from a text file using the folowing code. It uses the schema.ini file to define a structure of the datatable in the Dataset. The default file called schema.ini. I have about 10 or 15 tables i have to populate. Is there a way to specify an ini file i want to use? Dim Conn As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & FilePath & ";Extended Properties=""text;HDR=NO;FMT=Delimited""") Dim Comm As New System.Data.OleDb.OleDbDataAdapter("select * from " & FileName, Conn) Dim DS As New DataSet Try Comm.AcceptChangesDuringFill = False Comm.Fill(DS) End try Tag: Compact & Repair in Access from ADO.NET Tag: 77647
  - 9
    - Dataset generation and relation rules In VS.NET 2003 if you use sqldataadapters at design time to create your dataset there is problem : after you regenrate a dataset the relation rules are set all to default. Any quick hint to avoid this? Tag: Compact & Repair in Access from ADO.NET Tag: 77643
  - 10
    - Adding Data To a Table That Isn't Part Of the Original SQL Query I am fairly new to ASP.NET so I think I am missing something fundamental. Anyway, quite often I am pulling data from a database, but then I need to use that data to produce more data. A simple example would be: Let's say Column1=StartDate and Column2=EndDate. In addition to displaying Column1 and Column2, I need to do some calculations and display in as Column3. The calculations are easy and can be done in the code-behind. How to display it is another question. However, they might not be math calculations. Take for example, a SQL query that returns a list of servers and then for each server I use WMI to get some additional information and then I need to display the servername (from SQL) and the OS and Service Pack Version (from WMI) on a web page. The way I have been handling it is creating a new table in memory and adding the columns from the original SQL query and then doing the calculations and adding that as a column. Then I'll use this new table to DataBind my DataGrid or DataList. Is this the best way to do it? I feel like this isn't the smartest way to acomplish this. Tag: Compact & Repair in Access from ADO.NET Tag: 77642
  - 11
    - getOleDbSchema Hi, I want to get the tables,columns and constraints in a database. I understand that the getOleDbSchema method of the Connection object helps. Could anyone help me with code samples or direct me to appropriate links where I could find out more ? Thank You Julian Tag: Compact & Repair in Access from ADO.NET Tag: 77641
  - 12
    - passing input parameter to sql server sproc I have a very simple Stored Procedure that isn't working for me: CREATE PROCEDURE FindTutors ( @LastName NVarChar ) As ( SELECT fn, ln FROM main WHERE ln = @LastName ) GO Very simple; just trying to pass the @LastName parameter from my ASP.NET code. Still, whenever I click the button that is supposed to show all results in a datagrid, nothing comes up. I have altered the Sproc to just be "SELECT fn, ln FROM Main WHERE ln = 'Damon' " and it works fine then - so I know it's a matter of passing this parameter. Here is my codebehind - anyone have any ideas? Public Sub FindTutors(ByVal sender As Object, ByVal e As EventArgs) Handles btnFind.Click Dim cn As SqlConnection = New SqlConnection(ConfigurationSettings.AppSettings("ConnString")) Dim Cmd As SqlCommand = New SqlCommand("FindTutors", cn) Cmd.CommandType = CommandType.StoredProcedure Cmd.Parameters.Add("@LastName", SqlDbType.NVarChar).Value() = txtLastName.Text.ToString() 'Cmd.Parameters.Add("@LastName", txtLastName.Text) cn.Open() Dim rdrContent As SqlDataReader gridTutors.DataSource = Cmd.ExecuteReader() gridTutors.DataBind() cn.Close() End Sub ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! >100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- Tag: Compact & Repair in Access from ADO.NET Tag: 77638
  - 13
    - ini files I am getting data from a text file using the folowing code. It uses the schema.ini file to define a structure of the datatable in the Dataset. The default file called schema.ini. I have about 10 or 15 tables i have to populate. Is there a way to specify an ini file i want to use? Dim Conn As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & FilePath & ";Extended Properties=""text;HDR=NO;FMT=Delimited""") Dim Comm As New System.Data.OleDb.OleDbDataAdapter("select * from " & FileName, Conn) Dim DS As New DataSet Try Comm.AcceptChangesDuringFill = False Comm.Fill(DS) End try Tag: Compact & Repair in Access from ADO.NET Tag: 77629
  - 14
    - Connect to remote SQL server ... Can anyone give me the ADO.Net connection string to connect to a remote SQL server using it's IP address ? Any parameters and settings to be checked ? Tag: Compact & Repair in Access from ADO.NET Tag: 77624
  - 15
    - Dataset ExtendedProperties woes I'm working with a dataset to which I've added an extended property like so: Const KEY_SELECT = "selectquery" Dim strSQL as String = "Blah blah blah" dsetTemp.ExtendedProperties.Add(KEY_SELECT, strSQL) If I try to retrieve the value using the constant to specify the key, I get a "The parameter is incorrect" error, but if I hardcode the key name it works: Console.WriteLine(dsetTemp.ExtendedProperties.Item(KEY_SELECT).ToString) spits out: "The parameter is incorrect" Console.WriteLine(dsetTemp.ExtendedProperties.Item("selectquery").ToString) spits out: "Blah blah blah" Why doesn't it work when I specify the key with a constant? - Don Tag: Compact & Repair in Access from ADO.NET Tag: 77616
  - 16
    - Security through stored procedures I've just started reading "Microsoft ADO.NET" by David Sheppa. One of the lines in the overview caught my eye: "Because many database administrators allow users to modify the contents of a database only through stored procedures, many developers cannot submit updates through the ADO Recordset object". This is new to me - does it mean that you could revoke UPDATE access to a database table but allow EXEC access and that the code inside the sproc carries out the update? I rather like the idea of this. I've always had a problem with the conflict between security and open access to a database. For example, our users have UPDATE access to a table as they obviously have to write updates back. However, this means that anyone with a little knowledge could use ODBC to connect to the database and write whatever they want to the database table. Which from a security/audit point of view isn't good. I was thinking about adding an encryption code to each record so that whilst we couldn't stop users changing data directly, we could at least detect when it had happened. Another option was to carry out all updates via a service which had different security rights but that's getting very messy, an probably very inefficient. Regards, Rob. Tag: Compact & Repair in Access from ADO.NET Tag: 77606
  - 17
    - autonumber problem in my datatable Hello, I wanted some help on a dataset question. I have created a dataset and datatables and used the dataadapters 'fill' method on them. In my database the primary key is an autonumber. When i use the fill method and set a datagrid source to my datatable i can see 10 rows. The rows each have a primary key value from 0 to 10 (Autonumbers). When i try to insert a new row into my datatable, the primary key autonumber seems to start at the value 0 rather than continuing from the highest number. i.e 11 onwards. For this reason my inserts into the datatable keep failing. Why does it do this? Is there anyway i can make the autonumber start from the..... 'highest already generated number' (in this case 10) + 1 ??? Another question If i have an autonumber coloumn in my database, will this automaticcaly be created for my datatable if i simply use the dataadapters fill method? thx Tag: Compact & Repair in Access from ADO.NET Tag: 77598
  - 18
    - synchronizing 2 grids in two different forms Hi all! i have this problem: i need to synchronize 2 datagrids in 2 different forms upon the Master Details model. i want to do this using BindingContext, BindingManagerBase. can you give me any directions? (i've read the msdn topics concerning this stuff) Thank you, Bamse ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! >100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- Tag: Compact & Repair in Access from ADO.NET Tag: 77595
  - 19
    - Automatically Generated Commands & Optimistic Concurrency Hello, I have created a dataadapter by specifying the select command and then used the SqlCommandBuilder to automatically generate the Update, Delete and Insert commands. I fill the dataset, close the DB connection, open the connection again, manually change the database, and then update the dataset and call the dataadapter update method, I was expecting it to raise a dbconcurrrency error but none was raised. why is this as the help on the Microsoft pages states "The logic for generating commands automatically for UPDATE and DELETE statements is based on optimistic concurrency. That is, records are not locked for editing and can be modified by other users or processes at any time. Because a record could have been modified after it was returned from the SELECT statement, but before the UPDATE or DELETE statement is issued, the automatically generated UPDATE or DELETE statement contains a WHERE clause such that a row is only updated if it contains all original values and has not been deleted from the data source. This is done to avoid new data being overwritten. In cases where an automatically generated update attempts to update a row that has been deleted or that does not contain the original values found in the DataSet, the command will not affect any records and a DBConcurrencyException will be thrown." any help would be appreciated, Kay. My code is as follows: Dim dataset As New DataSet Dim connectString As String = "db connection string is in here" Dim myConn As New SqlConnection(connectString) Dim SqlSelectCommand As New SqlCommand("SELECT ID, Description FROM optFrame WHERE (RoleAccessRevised = 1)", myConn) Dim dataadapter As New SqlDataAdapter(SqlSelectCommand) dataadapter.MissingSchemaAction = MissingSchemaAction.AddWithKey Dim cmdBuilder As New SqlCommandBuilder(dataadapter) myConn.Open() dataadapter.Fill(dataset, "optFrame") myConn.Close() 'NOTE: At this point I go to sql server DB and manually change the data in the specified row, hoping it will cause concurrency myConn.Open() Dim rowToUpdate As DataRow = dataset.Tables("optFrame").Rows.Find(TextBox13.Text) 'NOTE : the row specified in textbox13 exists and is updated rowToUpdate.Item("Description") = TextBox14.Text Try dataadapter.Update(dataset, "optFrame") 'Note: concurrency is not caught here Catch ex As DBConcurrencyException Label28.Text = "concurrency error" End Try myConn.Close() Tag: Compact & Repair in Access from ADO.NET Tag: 77594
  - 20
    - Update datasource without using DataAdapter Hi All, I'm trying to find a way to update Dataset's datasource withtout using DataAdapter, does there exist any methods? Thanks! ----== Posted via Newsfeed.Com - Unlimited-Uncensored-Secure Usenet News==---- http://www.newsfeed.com The #1 Newsgroup Service in the World! >100,000 Newsgroups ---= 19 East/West-Coast Specialized Servers - Total Privacy via Encryption =--- Tag: Compact & Repair in Access from ADO.NET Tag: 77587
  - 21
    - Connection Pool - Does not check for Server Status. hi All, Connection Pool - Does not check for Server Status. Here is the scenario : 1) SQL Server is up 2) Create a connection pool for a particular connection string by repeatedly executing the same query in .NET ( using SqlConnection and SqlCommand classes ) This involves following steps - Open a connection - Execute a Query - Close the connection 3) STOP the SQL Server. 4) Run the same query again. We notice that - Opening a Connection goes through fine. If the pool was not formed ( if we are opening the connection for the first time ), this would have FAILED by throwing SQL Server not found execption. - Execute Query , Throws an Exception - General Network Error, Error Number 11. 5) Now RE-START the SQL Server. 6) Run the same query again. We notice that - Opening a Connection goes through fine. BUT, - Execute Query , Throws an Exception - General Network Error, Error Number 11. An Exception is thrown even if SQL Server is UP! Once the Server is up, we want the connection to succeed. Now, How do we handle this scenario? How do we invalidate the Connection Pool? thanks, HiChetu Tag: Compact & Repair in Access from ADO.NET Tag: 77583
  - 22
    - Problem with sql server text data type Hi , I have a method in an asp.net application that calls a sql server stored procedure. The stored procedure inserts data to Text field. Here is the .net procedure... public int Insert(int articleId,string textData) { int rowsAffected; SqlParameter[] parameters = { new SqlParameter("@articleId",SqlDbType.Int,4), new SqlParameter("@text",SqlDbType.Text), new SqlParameter("@pageId",SqlDbType.Int,4) }; parameters[0].Value = articleId; parameters[1].Value = textData; parameters[2].Direction = ParameterDirection.Output; try { RunProcedure("weeklyreport_inserttext",parameters,out rowsAffected); } catch(SqlException exc) { return 0; } return (int)parameters[2].Value; } My problem is that only so much of the text parameter gets stored and the rest is just cut off. Has anyone had a similar problem? Any help would be gratefully appreciated. Thanks, Kevin. *** Sent via Developersdex http://www.developersdex.com *** Don't just participate in USENET...get rewarded for it! Tag: Compact & Repair in Access from ADO.NET Tag: 77577
  - 23
    - XML support in ADO.NET I've got a dataset with <xs:restriction> tags, custom elements and other stuff in it. I want to populate it using a dataadapter and data from SQL but it ignores the schema/tags. Apparently this is due to the way ado.net works with XML. To do it I have to revalidate the xml data using the XMLValidatingReader class, which then gives me a performance overhead and is a right programming pain. Does anyone know if Microsoft has plans to provide more complete support for xml documents in ADO.NET in a future release? Tag: Compact & Repair in Access from ADO.NET Tag: 77570
  - 24
    - Extract Excel Cell Properties in c# Hi, Can u help me to Extract Excel Cell Properties like Formula Functions and Data Type like Numeric,Accounting etc.. Tag: Compact & Repair in Access from ADO.NET Tag: 77565
  - 25
    - Sorting a DataTable... Hi, I have a DataSet whose default table, namely DataSet.Tables[0] which has a row for each day selected from a database, however not all the days are always there so I am iterating thro each day and if it is missing I add it to the table by way of a new row with default values. The DataSet is then passed thro a web service to a Web front end and then shown on a grid. The problem I have is that I want the days to appear Mon thro' Sunday, but as I am adding them at the end of the Rows, they will not appear in the right order. I thought about using InsertAt, but depending on the number of days already there or inserted it would be tedious to have to work out which position to InsertAt, to get them in the right order at that stage. So to save my little brain getting a buzzing noise is there an existing way to do this, I was thinking of using DataTable.Select, but wasn't sure how to get it back into the original dataset to pass thro'. Any ideas? TIA Colin B Tag: Compact & Repair in Access from ADO.NET Tag: 77561

Hi

I wonder how can I use Compact & Repair feature in Access 2003 from my C# project using ADO.NET?

Thanks for help
Kamil

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Re: Compact & Repair in Access from ADO.NET by Miha

Miha
Wed Jan 21 07:36:04 CST 2004

Hi,

See this:
HOW TO: Compact a Microsoft Access Database by Using Visual Basic .NET
http://support.microsoft.com/default.aspx?scid=kb;en-us;306287&Product=vbNET

--
Miha Markic - RightHand .NET consulting & software development
miha at rthand com
www.rthand.com

"Kamil" <khisanth@o2.pl> wrote in message
news:CCFEDD7B-E258-42AC-93C1-1EE6F1085A73@microsoft.com...
> Hi
>
> I wonder how can I use Compact & Repair feature in Access 2003 from my C#
project using ADO.NET?
>
> Thanks for help
> Kamil

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