I have a WinForms application (VS 2008, .NET 3.5) that has a form with two different group boxes, and inside of each group box are different sets of radio buttons. When I r
You need to give both radio groups different group names. That may not be your issue, but it's a possible reason.
I'm curious as to why you would want radios to default to having no value at all. Radios represent boolean values - True or False - there is no other valid state.