Button CommandTarget Binding : Command « Windows Presentation Foundation « C# / C Sharp

1. C# / C Sharp
2. Windows Presentation Foundation
3. Command

Button CommandTarget Binding

  


<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;
            }
        }
    }
}

   
    
  

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5.	Command Handler Command Binding in Xaml
6.	Command Handler Key Binding
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8.	Command Enabling
9.	Using CommandBinding and ExecutedRoutedEventHandler to bind Application event to an event handler method
10.	Create CommandBindings in Xaml and bind to Button
11.	Bind TextBox save command to CommandBinding
12.	Use TextBox.CommandBindingst to bind command
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