How to make a form transparent

Platform: WinForms|Category: Form

The opacity property enables you to specify a level of transparency for the form and its child controls.

The TransparencyKey property will let you make the form transparent while keeping it’s child controls visible (provided they have a different BackColor).

See the .NET documentation for Form.Opacity for differences between Opacity and TransparencyKey properties.

Opacity only works with Windows 2000 and later.