Create a custom RoutedCommand, the CommandBinding objects, and the KeyBinding objects in code. : RoutedCommand « Windows Presentation Foundation « C# / CSharp Tutorial






<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:custom="clr-namespace:WpfApplication1"
    Title="Custom RoutedCommand Sample"
    Name="RootWindow" Height="500" Width="600"
    Focusable="True">
  <Window.CommandBindings>
    <CommandBinding Command="{x:Static custom:Window1.ColorCmd}"
                    Executed="ColorCmdExecuted"
                    CanExecute="ColorCmdCanExecute"/>
  </Window.CommandBindings>
  <DockPanel>
    <Menu DockPanel.Dock="Top" Height="25">
      <MenuItem Header="Commands">
        <MenuItem Header="Color Command" Command="{x:Static custom:Window1.ColorCmd}" />
      </MenuItem>
    </Menu>
    <Border BorderBrush="Black" BorderThickness="1" Margin="10"
            Height="165" Width="250" DockPanel.Dock="Top">
      <TextBlock TextWrapping="Wrap" Margin="3">
        a
        <LineBreak/>
        b
        <LineBreak/>
        <LineBreak/>
        c
        <LineBreak/>
      </TextBlock>
    </Border>
    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center" DockPanel.Dock="Bottom">
      <Border BorderBrush="Black" BorderThickness="1" Height="200" Width="200">
        <StackPanel Name="FirstStackPanel" Background="AliceBlue" Focusable="True">
          <StackPanel.CommandBindings>
            <CommandBinding Command="{x:Static custom:Window1.ColorCmd}" Executed="ColorCmdExecuted" CanExecute="ColorCmdCanExecute"/>
          </StackPanel.CommandBindings>

          <Label>StackPanel</Label>

          <Button Command="{x:Static custom:Window1.ColorCmd}"
                  CommandParameter="ButtonOne"
                  CommandTarget="{Binding ElementName=FirstStackPanel}" 
                  Content="CommandTarget = FristStackPanel" />
        </StackPanel>
      </Border>
      <Border BorderBrush="Black" BorderThickness="1" Height="200" Width="200">
        <StackPanel Background="AliceBlue" Focusable="True">
          <Label>Second StackPanel</Label>
        </StackPanel>
      </Border>
    </StackPanel>
  </DockPanel>
</Window>


//File:Window.xaml.cs

using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Input;


namespace WpfApplication1
{
    public partial class Window1 : Window
    {
        public static RoutedCommand ColorCmd = new RoutedCommand();
        public Window1()
        {
            InitializeComponent();
        }
        private void ColorCmdExecuted(object sender, ExecutedRoutedEventArgs e)
        {
            Panel target = e.Source as Panel;
            if (target != null)
            {
                if (target.Background == Brushes.AliceBlue)
                {
                    target.Background = Brushes.Red;
                }
                else
                {
                    target.Background = Brushes.AliceBlue;
                }
            }
        }
        private void ColorCmdCanExecute(object sender, CanExecuteRoutedEventArgs e)
        {
            if (e.Source is Panel)
            {
                e.CanExecute = true;
            }
            else
            {
                e.CanExecute = false;
            }
        }
    }
}
WPF Create A Custom Routed Command The Command Binding Objects And The Key Binding Objects In Code








24.136.RoutedCommand
24.136.1.Bubble routed events, and write an event handler for a routed event.Bubble routed events, and write an event handler for a routed event.
24.136.2.Create a custom RoutedCommand, the CommandBinding objects, and the KeyBinding objects in code.Create a custom RoutedCommand, the CommandBinding objects, and the KeyBinding objects in code.
24.136.3.Convert RoutedEventArgs.OriginalSource to event senderConvert RoutedEventArgs.OriginalSource to event sender
24.136.4.Get RoutedEvent NameGet RoutedEvent Name
24.136.5.Bind event handler to button with RoutedEventHandlerBind event handler to button with RoutedEventHandler
24.136.6.Custom Command by KeyGesture and RoutedUICommandCustom Command by KeyGesture and RoutedUICommand
24.136.7.RoutedEvents: Button Mouse Up EventRoutedEvents: Button Mouse Up Event
24.136.8.RoutedEvents: Drag And DropRoutedEvents: Drag And Drop
24.136.9.RoutedEvents: Focus eventRoutedEvents: Focus event
24.136.10.RoutedEvents: Key ModifiersRoutedEvents: Key Modifiers
24.136.11.RoutedEvents: Key Press EventsRoutedEvents: Key Press Events
24.136.12.RoutedEvents: Mouse PositionRoutedEvents: Mouse Position
24.136.13.RoutedEvents Only NumbersRoutedEvents Only Numbers
24.136.14.RoutedEvents: Tunneled Key PressRoutedEvents: Tunneled Key Press
24.136.15.Routed Event DemoRouted Event Demo
24.136.16.Create RoutedCommand from InputGestureCollectionCreate RoutedCommand from InputGestureCollection