Basic math operators—such as plus, minus, and modulus—can get you only so far. It is only a matter of time before you find that you need more robust math routines.

If you draw graphics onto a form, they may be lost when the form or sections of the form refreshes. This program shows one way to retain the graphics on the form background. (It also shows how to draw some graphics!)

Partial types are a construct that Microsoft has proposed be added to C#. It is never too early to learn more.

Microsoft has announced a number of changes that should occur in future C# standards. One of these changes is a template-like feature called generics.

Multiple inheritance is not possible in C# using classes; however, you can implement multiple interfaces. This is a simple example of inheriting characteristics of multiple interfaces.

This example presents the FileInfo class, which allows you to get information about a file.