How to Dispose/Remove/Clear/Delete Rectangleshape created on Form by button click

Hi Guys,
I have a windows form where there are few textboxses and buttons.
One of the button when clicked creates few rectangles to depict sort of design(its working)
Now my problem is that I want to clear the form for the user to enter again.
I am able to clear textbox but I am not able to remove the rectangles made.
Could anyone suggest how to do it?
I have tried searching for the example but could not find any.
I have not used paint to draw my drawing so any graphic related answer wont work it seems.
I found this but it is giving error :Unable to cast object of type 'System.Windows.Forms.Button' to type 'Microsoft.VisualBasic.PowerPacks.RectangleShape'"
CType(sender, PowerPacks.RectangleShape).Dispose()
what should I do?
Thanks in Advance!
Mak

Hi Guys,
I was able to find out how to remove the all the rectangles which I created
If we just use this
Invalidate()
It will clear the entire surface of the control.
But......
The problem is how to remove specific Rectangles!
Still looking for answers!!, all ideas welcome!
Cheers
Mak
Hello,
You could define that control variable outside that method, and hide them by setting its parent to nothing.
Here is a simple sample.
Imports Microsoft.VisualBasic.PowerPacks
Public Class Form1
Dim canvas As New ShapeContainer
Dim Rect1 As New RectangleShape
Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
canvas.Parent = Me
Rect1.Parent = canvas
Rect1.Size = New System.Drawing.Size(140, 140)
Rect1.Location = New System.Drawing.Point(2, 2)
Rect1.BackStyle = BackStyle.Opaque
Rect1.BackColor = Color.White
End Sub
Private Sub Button2_Click(sender As Object, e As EventArgs) Handles Button2.Click
canvas.Parent = Nothing
End Sub
End Class
Regards,
Carl
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