ButtonClick.cs

private void OnButtonClicked(RadialController sender, RadialControllerButtonClickedEventArgs args)
{
    if (_dte.Application.Debugger.CurrentMode == dbgDebugMode.dbgRunMode)
    {
        _dte.Application.Debugger.Stop();
    }
    else
    {
        _dte.Application.Debugger.Go();
    }
}