[WPF]使用CheckAccess检测是否在控件的ui线程上执行

private void Parallel(object sender, RoutedEventArgs e)
{
    Task.Run(() => ChangeColour(Brushes.Red));
}

private void Standard(object sender, RoutedEventArgs e)
{
    ChangeColour(Brushes.Green);
}
 
//如果是在控件的UI线程上执行 则直接调用就行,不在同一个ui线程上就使用线程调度的方式
private void ChangeColour(Brush brush)
{
    if (MyGrid.CheckAccess())
        MyGrid.Background = brush;
    else
        MyGrid.Dispatcher.Invoke(() => { MyGrid.Background = brush; });
}