Inherits DataGridView Problem

[Paul]

I created a class that inherits from the DataGridView. In the New Sub
I want it to initialize with 3 columns. When I place the inherited
class on a form, it's work great. The three columns are created.
Then, if I close the Form view and reopen it, the inherited class
control has 6 columns. The three columns I wanted are added again. I
try to clear the columns prior to adding them, but it doesn't seem to
work. Below is the code.

Any help would be greatly appreciated!

Public Class ChecksReceivedD ataGridView
Inherits DataGridView

Public Sub New()
MyBase.New()

Me.Rows.Clear()
Me.Columns.Clea r()
Me.ColumnCount = 0
Me.Columns.Add( "colAmount" , "Amount")
Me.Columns.Add( "colEnteredDate ", "Date")
Me.Columns.Add( "colSource" , "Source")
End Sub

End Class