PRA: List Box RowSource Runs Twice When Set at Run Time

The information in this article applies to:

• Microsoft Access version 2.0

1. Open the sample database NWIND.MDB.
2. Create a new form that is not based on any table or query.
3. Add a list box to the form and set the following properties for the list box.

   NOTE: In the following sample code, an underscore (_) at the end of a line is used as a line-continuation character. Remove the underscore from the end of the line when re-creating this code.

         Name: Field0
         RowSource: SELECT [Employee ID] FROM Employees WHERE [Employee ID]>_
         [What Employee?]
   

4. Add a command button to the form and enter the following code for the command button's OnClick event procedure:

         Me![Field0].RowSource = Me![Field0].RowSource
   

5. View the form in Form view. Note that the Parameter dialog box appears as you expect.
6. Type the number "4" (without the quotation marks), and then choose the OK button.
7. Choose the command button. Note that the Parameter dialog box appears as you expect.
8. Type the number "4" (without the quotation marks), and then choose OK. Note that the Parameter dialog box appears a second time.