Checking for an empty string in an ASP.NET text box

I' m desperate, nobody knows why this subroutine don' t check for an empty string in the text box 'activ2.Text' ? :confused: This sub is in an aspx page (asp.net vb.net).


My complete Subroutine:

Code:

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Sub ServerVal_activ(sender As Object, value As ServerValidateEventArgs)

  Try

    Dim var1 As Integer
    var1 = activ1.SelectedItem.Value   
    Dim var2 As String
    var2 = activ2.Text 

      If (var1 = 7) And (var2 = "") Then
        value.IsValid = False
        Exit Sub

      End If

  Catch exc As Exception
  End Try

  value.IsValid = True

End Sub

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This Sub is triggered by the follow ASP.NET Custom Validator:

Code:

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<asp:CustomValidator id="CustomValidator1" runat="server" ControlToValidate="var2" OnServerValidate="ServerVal_activ" Display="Dynamic">You must specify the activity.
</asp:CustomValidator>

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What is the problem?...


Thanks,
Cesar

I already have solved the problem. The mistake was in a Custom Validator property.

Code:

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<asp:CustomValidator id="CustomValidator1" runat="server" ControlToValidate="var2"....
</asp:CustomValidator>

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The 'ControlToValidate' property not had to be there.