How to Use a Region Class to Exclude a Region in VB.NET

1). Open the VB.NET file in an editor such as Microsoft Visual Studio Express.
2). Create a rectangular region by adding the following code in your function:

Dim rect_region As New Region(New Rectangle(10, 10, 50, 50))
3). Create a "GraphicsPath" object that you can use to draw on and add shapes to by adding the code:

Dim graphics_path As New System.Drawing.Drawing2D.GraphicsPath
4). Draw a circle onto the graphics path by adding the code:

graphics_path.AddEllipse(40, 40, 20, 20)
5). Call the "Exclude" method to exclude the circle from the region by adding the code:

rect_region.Exclude(graphics_path)

Future actions on the region will not apply to the excluded circle.
6). Call the "Dispose" method when you are done using the objects by adding the code:

graphics_path.Dispose()

rect_region.Dispose()
7). Save the VB.NET file, compile and run the program to view the created region.