Да, см. MSDN
// This method is called from the constructor of the form to set up the menu items.
public void ConfigureMyMenus()
{
/* Set all of these menu items to Radio-Button check marks so the user can see
that only one color can be selected at a time. */
menuItemRed.RadioCheck = true;
menuItemBlue.RadioCheck = true;
menuItemGreen.RadioCheck = true;
}