ACC2000: Error Setting Index Property of ADO Recordset Based on a Microsoft Jet Database (249683)

SYMPTOMS

When you try to set the Index property of an ActiveX Data Objects (ADO) recordset that is based on a table in a Microsoft Jet database, you may receive the following error message:

Run-time error '3251':

Object or provider is not capable of performing requested operation.

In Microsoft Windows 2000, you may receive the following error message:

Run-time error '3251':

Current provider does not support the necessary interface for Index functionality.

RESOLUTION

Open a separate ADO connection to the back-end database, and open the table directly instead of using the linked table. To see an example of how to do this, follow these steps:

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. 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.

Follow steps 1 through 7 in the "Steps to Reproduce Behavior section" later in this article.

Type the following procedure within the new module:

Sub LinkTableSeek()
    Dim cn As ADODB.Connection
    Dim rs As ADODB.Recordset

    Set cn = New ADODB.Connection
    With cn
        .Provider = "Microsoft.Jet.OLEDB.4.0"
        .ConnectionString = "C:\Program Files\Microsoft " _
         & "Office\Office\Samples\Northwind.mdb"
        .Open
    End With
    Set rs = New ADODB.Recordset
    With rs
        .ActiveConnection = cn
        .Source = "Customers"
        .CursorLocation = adUseServer
        .CursorType = adOpenKeyset
        .Open Options:=adCmdTableDirect
        .Index = "PrimaryKey"
        .Seek "WOLZA"
        If (Not .EOF And Not .BOF) Then
            MsgBox rs.Fields("CompanyName").Value
        Else
            MsgBox "Record not found"
        End If
        .Close
    End With
    Set rs = Nothing
    Set cn = Nothing
End Sub

Follow steps 9 and 10 in the "Steps to Reproduce Behavior" section later in this article.

Note that you receive a message with the text "Wolski Zajazd," which is the company name of the CustomerID that the code was seeking.

MORE INFORMATION

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.

Steps to Reproduce Behavior

Start Microsoft Access 2000.
Create a new, blank database.
On the File menu, point to Get External Data, and then click Link Tables.
In the Link dialog box, locate the sample database Northwind.mdb, located in the C:\Program Files\Microsoft Office\Office\Samples folder by default.
Click Northwind.mdb in the Link dialog box, and then click Link.
In the Link Tables dialog box, click the Customers table, and then click OK.
Create a new module and type the following line in the Declarations section if it is not already there:
```
Option Explicit
					
```

Type the following procedure:

 
Sub LinkTableSeek()
    Dim cn As ADODB.Connection
    Dim rs As ADODB.Recordset
    
    Set cn = CurrentProject.Connection
    Set rs = New ADODB.Recordset
    With rs
        .ActiveConnection = cn
        .Source = "Customers"
        .CursorLocation = adUseServer
        .CursorType = adOpenKeyset
        .Open Options:=adCmdTableDirect
        .Index = "PrimaryKey"
        .Seek "WOLZA"
        If (Not .EOF And Not .BOF) Then
            MsgBox rs.Fields("CompanyName").Value
        Else
            MsgBox "Record not found"
        End If
        .Close
    End With
    Set rs = Nothing
    Set cn = Nothing
End Sub

On the Debug menu, click Compile project name to verify that the module is compiled correctly.
To test the procedure, type the following line in the Immediate window, and then press ENTER:
```
LinkTableSeek
						
```
Note that you receive the error mentioned in the "Symptoms" section of this article.