Make a form's background transparent

Question

How I make a background transparent on my form? Is it possible in C#?

Thanks in advance!

Answer 1

Update:

How to: Give Your Control a Transparent Background

Deprecated: How to: Create Transparent Windows Forms:

Note: As transparent forms are only supported in Windows 2000 or later, Windows Forms will be completely opaque when run on older operating systems, such as Windows 98, regardless of the value set for the Opacity property.