C:\IndyJUG>csc Circle.cs
Microsoft (R) Visual C# Compiler Version 7.00.9254 [CLR version v1.0.2914]
Copyright (C) Microsoft Corp 2000-2001. All rights reserved.


C:\IndyJUG>csc /out:shapegui.exe ShapeGUI.cs /out:circle.netmodule Circle.cs
Microsoft (R) Visual C# Compiler Version 7.00.9254 [CLR version v1.0.2914]
Copyright (C) Microsoft Corp 2000-2001. All rights reserved.

ShapeGUI.cs(169,7): warning CS0168: The variable 'ex' is declared but never used