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marcus_d

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Tab Control - disable button when switching tabs.

Hi,

I have created a windows form with a tab control.  Each tab control has a number of textboxes which are filled with data using databind.  I have an "Apply" button which is disabled until any of the text is changed in the textboxes (using the .TextChanged handler).  The problem is that when I click another tab the TextChanged handler is executed and the "Apply" button is enabled even though no text has been changed (see code example below).  

Private Sub TextBox_Changed(ByVal sender As Object, ByVal e As System.EventArgs) Handles tbCompanyName.TextChanged
    Me.btnApply.Enabled = True
End Sub

Anybody any ideas how to keep the apply button disabled if nothing was changed on the first tab?

Thanks

Marcus
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stripathi
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marcus_d

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Thanks for your response.  I've taken your advice and used the lostfocus handler to enable the apply button.  Because I only wanted the apply button to be enabled if text had been changed I used the following procedure :-

Private Sub CompanyName_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles tbCompanyName.LostFocus
   If Me.tbCompanyName.Text <> strCompanyName Then
      Me.btnApply.Enabled = True
   End If
End Sub