Two Type of event-handling Enter and Leave for textBox vb.net

Question

I am Using two types of event-handling Enter and Leave in one Function, using with If-Statement.

Anybody, please, correct my script.

Private Sub MaskedTextBox_Enter(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OrgNameTextBox.Enter, OrgNameTextBox.Leave        
    If Event = Enter Then
        CType(sender, Control).BackColor = Color.Yellow
        CType(sender, Control).ForeColor = Color.Black

    ElseIf  Event = Leave Then
        CType(sender, Control).BackColor = Color.Black
        CType(sender, Control).ForeColor = Color.White

    End If
End Sub

Answer 1

Ideally, you should have two separate handlers for two separate events because you are doing different things on different events. But if you must have only one handler then you can try something like, and I am pretty sure this is a HACK:

Private Sub MaskedTextBox_Enter(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OrgNameTextBox.Enter, OrgNameTextBox.Leave
 Dim stackTrace As New StackTrace(True)
 Dim frame As StackFrame = stackTrace.GetFrames[0]
 If(frame.GetMethod.Name = 'OnEntered') <CHECK THE EVENT NAME, THIS IS JUST AN EXAMPLE>
            CType(sender, Control).BackColor = Color.Yellow
            CType(sender, Control).ForeColor = Color.Black
 End If
 If(frame.GetMethod.Name = 'OnLeave')        
            CType(sender, Control).BackColor = Color.Black
            CType(sender, Control).ForeColor = Color.White
 End If
End Sub

I had seen the way to get the event name somewhere in StackOverflow only, I will update the answer once I find it to give the correct credit :)

EDITED ANSWER

Private Sub MaskedTextBox_Enter(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OrgNameTextBox.Enter, OrgNameTextBox.Leave
     Dim stackTrace As New StackTrace(True)
     For Each frame As StackFrame In s.GetFrames
      IF(frame.GetMethod.Name = 'OnEntered') <CHECK THE EVENT NAME, THIS IS JUST AN EXAMPLE>
                CType(sender, Control).BackColor = Color.Yellow
                CType(sender, Control).ForeColor = Color.Black
      End IF
      IF(frame.GetMethod.Name = 'OnLeave')        
                CType(sender, Control).BackColor = Color.Black
                CType(sender, Control).ForeColor = Color.White
      End If
   NEXT --THIS NEEDS TO BE CHECKED, YOU MAY WANT TO EXIT BEFORE,ONCE FOUND YOUR EVENT.
 End Sub

Also found the actual answer mentioned earlier for credit. It's How to get event name in vb.net?