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

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

You are trying to set the Index property of a linked table within the database.

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.

1. Follow steps 1 through 7 in the "Steps to Reproduce Behavior section" later in this article.
2. 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
   
   					

3. 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.

This behavior is by design.

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

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

   Option Explicit
   					

8. 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
   					

9. On the Debug menu, click Compile project name to verify that the module is compiled correctly.
10. 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.

For additional information about using the Seek method in an ADO recordset based on a table in a Microsoft Jet database, click the article number below to view the article in the Microsoft Knowledge Base: