Microsoft KB Archive/225899

= ACC2000: Can't Add or Delete Records with ADO AddNew or Delete Method =

Article ID: 225899

Article Last Modified on 6/23/2005

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APPLIES TO


 * Microsoft Access 2000 Standard Edition

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This article was previously published under Q225899





Advanced: Requires expert coding, interoperability, and multiuser skills.

This article applies to a Microsoft Access database (.mdb) and to a Microsoft Access project (.adp).

For a Microsoft Access 2002 version of this article, see 289675.



SYMPTOMS
When you are using ActiveX Data Objects (ADO), if you use the AddNew or Delete method of the Recordset object, and you open the recordset with an unspecified lock type, you may receive one of the following error messages:

Run-time error '3251':

The operation requested by the application is not supported by the provider.

or

Run-time error '3251':

Current Recordset does not support updating. This may be a limitation of the provider, or of the selected locktype.



CAUSE
By default, ADO recordsets are opened with a lock type of adLockReadOnly, which does not allow additions and deletions.



RESOLUTION
Microsoft provides programming examples for illustration only, without warranty either expressed or implied. This includes, but is not limited to, the implied warranties of merchantability or fitness for a particular purpose. This article assumes that you are familiar with the programming language that is being demonstrated and with the tools that are used to create and to debug procedures. Microsoft support engineers can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific requirements. To allow additions and deletions, open the recordset with a lock type of either adLockOptimistic or adLockPessimistic, as in the following code sample: Sub DelFirstRec Dim rs As ADODB.Recordset Set rs = New ADODB.Recordset

rs.Open "Select * from TestTable", CurrentProject.Connection, _ adOpenKeyset, adLockOptimistic rs.MoveFirst rs.Delete rs.Close End Sub NOTE: You can use this sample code to resolve the behavior in the "Steps to Reproduce Behavior" section of this article.



Steps to Reproduce Behavior
  In a new Access database, create the following new table called TestTable:   Table: TestTable Field Name: ID  Data Type: Autonumber Indexed: Yes (No Duplicates)

Field Name: Name Data Type: Text   Open the new table in Datasheet view and type the following test data:   ID    Name -  1    Beverages 2   Condiments 3   Confections 4   Dairy 5   Grains 6   Meat 7   Produce 8   Seafood   NOTE: The sample code in this article uses Microsoft ActiveX Data Objects. For this code to run properly, you must reference the Microsoft ActiveX Data Objects 2.x Library (where 2.x is 2.1 or later.) To do so, click References on the Tools menu in the Visual Basic Editor, and make sure that the Microsoft ActiveX Data Objects 2.x Library check box is selected.

Create a module and type the following line in the Declarations section if it is not already there: Option Explicit   Type the following procedure: Sub DelFirstRec Dim rs As New ADODB.Recordset

rs.Open "Select * from TestTable", CurrentProject.Connection, adOpenKeyset rs.MoveFirst rs.Delete rs.Close End Sub </li> To test this function, type the following line in the Immediate window, and then press ENTER:

DelFirstRec

Note that you receive the error message described in the "Symptoms" section of this article. Also, when you check the table, you see that no records have been deleted.</li></ol>

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