Hi there,
Your post and the subjects seems to be contradicting a little bit. Your topic suggest you inherit from RadioButton, which seems to imply you're building a custom server control. But, the post itself is about User Controls. Which of the two is it?
Your solution may be to create a GroupName property on your control. You could make this a view state property so it survives post backs. In the Load event of the control, you can use the public GroupName property to set the GroupName of the RadioButton inside your control.
Hope this helps,
Imar
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Imar Spaanjaars
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