How to Close a Window in WPF on a escape key

Question

Possible Duplicate:
How can I assign the 'Close on Escape-key press' behavior to all WPF windows within a project?

I want to close the windows in my wpf project when the user clicks the escape button. I don't want to write the code in every window but want to create a class which can catch the when the user press the escape key.

Answer 1

Option 1

Use Button.IsCancel property.

<Button Name="btnCancel" IsCancel="true" Click="OnClickCancel">Cancel</Button> 

When you set the IsCancel property of a button to true, you create a Button that is registered with the AccessKeyManager. The button is then activated when a user presses the ESC key.

However, this works properly only for Dialogs.

Option2

You add a handler to PreviewKeyDown on the window if you want to close windows on Esc press.

public MainWindow() {     InitializeComponent();      this.PreviewKeyDown += new KeyEventHandler(HandleEsc); }  private void HandleEsc(object sender, KeyEventArgs e) {     if (e.Key == Key.Escape)         Close(); }