CODEWITHSUNDEEP
c#wpfcommandbinding
Bhanu Chhabra
Bhanu Chhabra

Reputation: 576

WPF EditingCommands Command Binding

The Situation:

I have some Editing commands in WPF window, and a close command (Application.CloseCommand) and have some bindings like this

View:

 <Window.CommandBindings>
        <CommandBinding Command="ApplicationCommands.Close"
                        Executed="CloseCommandBinding_Executed"/>
        <CommandBinding Command="EditingCommands.ToggleBold"
                        Executed="EditingCommand_Executed"></CommandBinding>
 </Window.CommandBindings>
    <Window.InputBindings>
        <KeyBinding Key="Esc" Command="ApplicationCommands.Close"></KeyBinding>
    </Window.InputBindings>
.. *Some panel and grid stuff and more things* ..
<RichTextBox Name="RTBPopup">
       <RichTextBox.InputBindings>
            <KeyBinding Key="Esc" Command="ApplicationCommands.Close"></KeyBinding>
       </RichTextBox.InputBindings>
</RichTextBox>
.. *Some panel and grid stuff and more things* ..
<ToggleButton x:Name="btnToggleBold" CommandManager.Executed="EditingCommand_Executed" Command="EditingCommands.ToggleBold" CommandTarget="{Binding ElementName=RTBPopup}">B</ToggleButton>

Now:

If I press escape in RTBPopup (Richtextbox) the command gets executed and the debugger hits the breakpoint set on CloseCommandBinding_Executed method

but

when I click on toggle button for bold or press control + B, the EditingCommand_Executed is not getting hit by debugger (not getting executed)

What else I have tried:

 <ToggleButton.CommandBindings>
      <CommandBinding Command="EditingCommands.ToggleBold" Executed="EditingCommand_Executed"></CommandBinding>
 </ToggleButton.CommandBindings>

Upvotes: 1

Views: 1520

Answers (1)

mm8
mm8

Reputation: 169270

Handle the PreviewExecuted event:

<CommandBinding Command="EditingCommands.ToggleBold" 
                PreviewExecuted="CommandBinding_PreviewExecuted" />

The command is handled by the RichTextBox so it never bubbles up to your parent Window.

You could also try to use the CommandManager to hook up the event handler programmatically:

public partial class MainWindow : Window
{
    public MainWindow()
    {
        InitializeComponent();
        CommandManager.AddPreviewExecutedHandler(RTBPopup, new ExecutedRoutedEventHandler(OnExecuted));
    }

    private void OnExecuted(object sender, ExecutedRoutedEventArgs e)
    {
        if(e.Command == EditingCommands.ToggleBold)
        {
            MessageBox.Show("fired!");
        }
    }
}

Upvotes: 2

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