How to create user define (new) event for user control in WPF ?one small example

Question

I have one UserControl in which I am using a Canvas, and in that Canvas one Rectangle. I want to create a click event for that user control (Canvas and Rectangle) which I then want to use in the main window.

The question is: I want to create a new click event for the UserControl. How to do it? Kindly show little example or the code.

Answer 1

A brief example on how to expose an event from the UserControl that the main window can register:

In your UserControl:

1 . Add the following declaration:

public event EventHandler UserControlClicked;

2 . In your UserControl_Clicked event raise the event like this:

 private void UserControl_MouseDown(object sender, MouseButtonEventArgs e)
 {
        if (UserControlClicked != null)
        {
            UserControlClicked(this, EventArgs.Empty);
        }
  }

In your MainWindow:

Your usercontrol will now have a UserControlClicked event which you can register to:

<local:UserControl1 x:Name="UC" UserControlClicked="UC_OnUserControlClicked" />