ACC2000: VBA Procedure to Determine Current Page of Tab Control

You can run Visual Basic for Applications code based on the tabs that are selected in a tab control. To ensure that a particular block of code runs when you click a particular tab, use a Select Case statement with the Change event of the tab control itself, instead of using the Click event of the particular page.

In a tab control, a tab contains a page, but it is not actually part of the page itself. Therefore, the Click event of a page occurs when you click on the body of page, but it does not occur when you click the corresponding tab of the page. However, the Change event occurs every time you click a different tab. You can then use the Select Case statement to direct the flow of your code so that it depends on the index of the current page. The Value property of a tab control returns the index of the current page.

NOTE: This article explains a technique demonstrated in the sample file, FrmSmp00.mdb. For information about how to obtain this sample file, please see the following article in the Microsoft Knowledge Base:

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. CAUTION: If you follow the steps in this example, you modify the sample database Northwind.mdb. You may want to back up the Northwind.mdb file and follow these steps on a copy of the database.

1. Open the sample database Northwind.mdb.
2. Open the Employees form in Design view.
3. To select the tab control, click the arrow in the leftmost box on the formatting toolbar and select TabCtl0.
4. On the View menu, click Properties, and then click the Event tab.
5. Click to place the pointer in the OnChange box; then click the Build (...) button and select Code Builder.
6. Set the OnChange property of the tab control to the following procedure:

   Private Sub TabCtl0_Change()
      Select Case Me!TabCtl0.Value ' Returns Page Index.
         Case 0  ' Page Index for Page 1.
            MsgBox "You have selected Company Info"
         Case 1  ' Page Index for Page 2.
             MsgBox "You have selected Personal Info"
      End Select
   End Sub
   					

7. Close the module and the property sheet.
8. On the View menu, click Form view.
9. Click the Personal Info tab, and note that the following message appears:
   You have selected Personal Info.
10. Click the Company Info tab, and note that the following message appears:
    You have selected Company Info.

For more information about the tab control, click Microsoft Access Help on the Help menu, type What is a tab control in the Office Assistant or the Answer Wizard, and then click Search to view the topic.

For more information about using the Select Case statement to control program flow, in the Visual Basic Editor, click Microsoft Visual Basic Help on the Help menu, type Select Case statement in the Office Assistant or the Answer Wizard, and then click Search to view the topic.