Setting a different ancestor for WPF UserControl in VS2008

I would like to create a WPF user control that inherits from a different ancestor than UserControl class.

The problem is that visual studio keeps overriding my setting and change it back to UserControl resulting in an error: Partial declarations of 'XXX' must not specify different base classes

every time I re-build the project the auto generated file xxx.g.cs is being regenerated with Us开发者_JS百科erControl as the parnet...

I'm using VS2008 and C#

Any ideas?

Thanks.

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You'll want to create a CustomControl instead of a UserControl. A brief list of the differences can be found here.

If you want to create your own UI you can either overwrite the Template property of the control with a global style or a quick Google search should give you some tutorials about how to create CustomControls with their own default UI.

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In the XAML file of your control, have you changed the document tag from UserControl to something else?