WPF: routing usercontrol command on Mainwindow

Question

I have to admit that I have problems understanding how wpf works. I have a usercontrol BottomControl nested in my Mainwindow . If a button is pressed in BottomControl, I want certain changes to occur in my Mainwindow (for example, changing the contents of a text field).

The easiest way to do this is to simply call a public procedure in Click_Event, but it is not very elegant. I got to using RoutedCommands.

public static readonly RoutedCommand BottomGridReSize = new RoutedCommand();

In XAML Usercontrol

<Button Style="{StaticResource TransparentButton}" Command="{x:Static local:Commands.BottomGridReSize}" >

In MainWindow Code

        void BottomGridReSize_CanExecute(object sender, CanExecuteRoutedEventArgs e)
        {
            e.CanExecute = true;
        }

    void BottomGridReSize_Executed(object sender, ExecutedRoutedEventArgs e)
       {
          \\Do some stuff
       }

Obviously, Mainwindow cannot use these events because ist does not recognize them. What am I missing?

Any help would be much appreciated

John

Answer 1

: BottomControl , , , - mainwindow. DependencyProperty ICommand BottomControl Button. , MainViewmodel DP.

   <uc:BottomControl MyDPCommand="{Binding MyMainViewmodelCommand}" />