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Expose a User control event.

Posted on 2007-03-27
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Last Modified: 2012-06-21
How do I expose an event on a user control.  I have a user control with some textboxes on a form control.  There are some leave events in the usercontrol itself (totaling the textboxes).  Is there a way that I can catch this event from the main form so I preform some other action on the main form?  
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Question by:Kevin Robinson
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2 Comments
 
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by:theGhost_k8
ID: 18799688
well in this can u have to use raiseevent.
and in main form you have to handle/catch this method/event
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ZeonFlash earned 500 total points
ID: 18799944
Here's a quick example.  The example UserControl has a single textbox on it that will have it's Leave event relayed back to the main form:

Public Class UserControl1
    Inherits System.Windows.Forms.UserControl

      Public Event TextBoxLeave(ByVal TheTextBox As TextBox)

      Private Sub TextBox1_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBox1.Leave
            RaiseEvent TextBoxLeave(sender)
      End Sub

End Class

In your main form's code, you can catch the event like this:

      Private Sub UserControl11_TextBoxLeave(ByVal TheTextBox As System.Windows.Forms.TextBox) Handles UserControl11.TextBoxLeave
            MsgBox(TheTextBox.Name & " has thrown the Leave event")
      End Sub
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