How to make RadioButtons Mutually excusive

Question

I have 7 RadioButtons on a Form

3 of them belongs one group and 4 of them to other group

I want the RadioButtons to be mutually exclusive within the group.

This can be achieved by putting them in two GroupBoxes,

Is there any way we can achieve this without putting them in a container like groupbox

Answer 1

Putting them on a Panel would be easiest, but if you really don't want a container control, you can use a method I've used. Create your own CustomRadioButton by inheriting from RadioButton and add a Group property (string, int, doesn't matter). When the CheckChanged event fires, if the button has just become checked, search the parent container's Controls collection for other CustomRadioButton controls with the same value for Group and uncheck them. I've used this before and it works well. Really though, just use a Panel.