Use CommandBinding to bind ApplicationCommands.New in code

 
<Window x:Class="Commands.TestNewCommand"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="TestNewCommand" Height="150" Width="300">
  <Window.CommandBindings>
    <CommandBinding Command="ApplicationCommands.New"
      Executed="NewCommand" />
  </Window.CommandBindings>

  <StackPanel >
    <Menu>
      <MenuItem Header="File">
        <MenuItem Command="New"></MenuItem>
      </MenuItem>
    </Menu>

    <Button Margin="5" Padding="5" Command="ApplicationCommands.New" ToolTip="{x:Static ApplicationCommands.New}">New</Button>
    <Button Margin="5" Padding="5" Visibility="Hidden" Command="ApplicationCommands.Open">Open (unwired)</Button>
      <Button Margin="5" Padding="5" Visibility="Hidden" Click="cmdDoCommand_Click" >DoCommand</Button>
    </StackPanel>
</Window>
//File:Window.xaml.cs
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;

namespace Commands
{
    public partial class TestNewCommand : System.Windows.Window
    {
        public TestNewCommand()
        {
            InitializeComponent();
            CommandBinding bindingNew = new CommandBinding(ApplicationCommands.New);
            bindingNew.Executed += NewCommand;
            this.CommandBindings.Add(bindingNew);
        }
        private void NewCommand(object sender, ExecutedRoutedEventArgs e)
        {            
            MessageBox.Show("New command triggered by " + e.Source.ToString());
        }
        private void cmdDoCommand_Click(object sender, RoutedEventArgs e)
        {
            Console.WriteLine("command");
        }
    }
}

1.	Bind ApplicationCommand to a handler
2.	Assign ApplicationCommands.Open to Button
3.	Binding command to ApplicationCommands.Redo
4.	Binding Command to ApplicationCommands.New
5.	Bind CanExecute to ApplicationCommands.Save
6.	Binding ApplicationCommands.New Command to your own handler
7.	Change ApplicationCommands.New.Text
8.	Call ApplicationCommands.New.Execute to execute the command directly
9.	Use CommandBinding to Bind to ApplicationCommands
10.	Add ApplicationCommands.Cut to TextBox with TextBox.CommandBindings

Use CommandBinding to bind ApplicationCommands.New in code : ApplicationCommand « Windows Presentation Foundation « C# / C Sharp

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