Hello,

I have two groupbox in a windows form, each containing a radiobutton.

If i check one radiobutton another should be unchecked.

Now I am using ultraoptionset control to replace windows control radiobutton.

I tried below code:

if ultraopionset1.Items(0).CheckState = CheckState.Checked then

    ultraoptionset2.Items(0).CheckState = CheckState.Unchecked

End if

but, it is not working as expected. 

How to set the control checked state to false?

Please find the attached snapshot .