C# - How to initialize gradient panel demo?

I found a web开发者_Go百科 page that describes how to create a gradient panel in a WinForms application.

Does anyone know how to initialize this panel demonstration? There is source code but no comments or examples how the code can be used.

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You build the project to get a DLL (to add as a reference), or embed the code in your project. On your forms designer, you should see a new item in your toolbox, drag it onto your form.

It has properties for colour etc. Is this any help?