Help command : Command « Windows Presentation Foundation « C# / C Sharp

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C# / C Sharp » Windows Presentation Foundation » CommandScreenshots 
Help command
Help command
  

<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        x:Class="AboutDialog"
        Title="About WPF Unleashed" SizeToContent="WidthAndHeight"
        Background="OrangeRed">
  <Window.CommandBindings>
    <CommandBinding Command="Help" CanExecute="HelpCanExecute" Executed="HelpExecuted"/>
  </Window.CommandBindings>
  <StackPanel>
    <StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
      <Button MinWidth="75" Margin="10" Command="Help" Content="{Binding RelativeSource={RelativeSource Self}, Path=Command.Text}"/>
      <Button MinWidth="75" Margin="10">OK</Button>
    </StackPanel>
    <StatusBar>asdf</StatusBar>
  </StackPanel>
</Window>

//File:Window.xaml.cs

using System.Windows;
using System.Windows.Input;

public partial class AboutDialog : Window
{
    public AboutDialog()
    {
        InitializeComponent();
    }

    void HelpCanExecute(object sender, CanExecuteRoutedEventArgs e)
    {
        e.CanExecute = true;
    }
    
    void HelpExecuted(object sender, ExecutedRoutedEventArgs e)
    {
        System.Diagnostics.Process.Start("http://www.java2s.com");
    }
}

   
    
  
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