textbox keypress event beeping ?!?!?!

I have two panels:   one being a search panel & one holding a datagrid.

I have put a keypress event on the one text field ....

Private Sub txtIDnum_KeyPress(ByVal sender As System.Object,
                                                    ByVal e As System.Windows.Forms.KeyPressEventArgs)
                                                    Handles txtIDnum.KeyPress
        If e.KeyChar = Chr(13) Then
            PerformCustomerSearch()
        End If
End Sub

When I press the Enter key, the customer search works fine, but its beeping as if it's erroring out somewhere.   If I press the Search button though, no beeps.  

The odd thing is that on my "login" form, I do the very same thing and I have no problem ... the only difference is that when i do the keypress event on the login form, all it does is close that one and open the main form whereas the even i'm having trouble with just populates and displays a datagrid on a different panel.  

Any help would be greatly appreciated!  :)

- Travis -
trs28Asked:
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Mike TomlinsonMiddle School Assistant TeacherCommented:
To get rid of the Beep...set e.Handled = True:

    Private Sub txtIDnum_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtIDnum.KeyPress
        If e.KeyChar = Chr(13) Then
            e.Handled = True
            PerformCustomerSearch()
        End If
    End Sub
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trs28Author Commented:
That did it!   Thanks!   ....but why does it beep there, but not when I try to trap that key on the login dialog I'm using?!?
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Mike TomlinsonMiddle School Assistant TeacherCommented:
Maybe because you close that form?...not really sure though.  =\
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