WPF - bind MenuItem Command to ICommand property?

[erikthysell]

What would you like to be added:

I am probably doing something wrong but, using TaskbarIcon from H.NotifyIcon.Wpf, I would like to ha a MenuItem Command binding to a IRelayCommand (from CommunityToolkit.Mvvm.Input) property of the encompassing window, i.e.:

MainWindow.xaml :

<Window x:Class="MyProject.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:MyProject"
        xmlns:tb="clr-namespace:H.NotifyIcon;assembly=H.NotifyIcon.Wpf" 
        mc:Ignorable="d"
        Title="My Project" Height="450" Width="800"
        ShowInTaskbar="False">

    <Grid>
        <tb:TaskbarIcon
        ToolTipText="DANSIM Cluster Client"
            IconSource="/Images/dscc.ico"
        MenuActivation="LeftOrRightClick"
        PopupActivation="DoubleClick">
            <tb:TaskbarIcon.ContextMenu>
                <ContextMenu>
                    <TextBlock Text="Special commands" />
                   
                    <MenuItem
                        Header="_Quit"
                        Command="{Binding QuitCommand, RelativeSource={RelativeSource AncestorType=Window}}">
                    </MenuItem>
                </ContextMenu>
            </tb:TaskbarIcon.ContextMenu>
        </tb:TaskbarIcon>
    </Grid>
</Window>

MainWindow.xaml.cs:

using CommunityToolkit.Mvvm.Input;
using Serilog;
using System;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Runtime.CompilerServices;
using System.Windows;
using System.Windows.Forms;

namespace MyProject
{
public partial class MainWindow : Window
    {        public IRelayCommand QuitCommand { get; set; }

        public MainWindow()
        {
            Log.Logger = new LoggerConfiguration()
						//.WriteTo.RichTextBox(LogTextBox)
						.WriteTo.Console()
						.WriteTo.File("log.txt", rollingInterval: RollingInterval.Day)
						.CreateLogger();
            Log.Information("Starting MyProject");
            ShowLogWindowCommand = new RelayCommand(ShowLogWindow);
            QuitCommand = new RelayCommand(Quit);

            InitializeComponent();
            }
        }

        private void OnClicked(object? sender, MouseEventArgs e)
        {
            App.Current.MainWindow.Show();
        }

        private void Quit(object? sender, EventArgs e)
        {
            Log.Information("Closing app");
            this.Close();
        }
    }
}

Why is this needed:

To aid in mvvm scenarios

For which Platform:

• [x ] WPF

Anything else we need to know?

[HavenDV]

You need to specify the DataContext for Window({Binding RelativeSource={RelativeSource Self}}) or TaskbarIcon({Binding RelativeSource={RelativeSource AncestorType=Window}}).
The reason the current code doesn't work is because the ContextMenu doesn't belong to the window's visual tree as far as I know. Therefore, it does not have access to Window. But it will inherit DataContext from TaskbarIcon, because this case is taken into account in the library.