I can't get my custom click event to work.

Question

Hello. I have this class written.

public class MyButtonSimple : Button
{
    // Create a custom routed event by first registering a RoutedEventID
    // This event uses the bubbling routing strategy
    public static readonly RoutedEvent TapEvent = EventManager.RegisterRoutedEvent(
        "Tap", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(MyButtonSimple));

    // Provide CLR accessors for the event
    public event RoutedEventHandler Tap
    {
        add { AddHandler(TapEvent, value); }
        remove { RemoveHandler(TapEvent, value); }
    }

    // This method raises the Tap event
    void RaiseTapEvent()
    {
        RoutedEventArgs newEventArgs = new RoutedEventArgs(MyButtonSimple.TapEvent);
        RaiseEvent(newEventArgs);
    }
    // For demonstration purposes we raise the event when the MyButtonSimple is clicked
    protected override void OnClick()
    {
        RaiseTapEvent();
    }

It works fine, I click it and it shows a MessageBox.
The thing is that I want to change the class it derives from to "UserControl".
And I do not want it to derive from Button. Though, it doesn't work when I
change it and try to click it, nothing happens.

Please help!

Answer 1

The OnClick is not belonged to UserControl Methods, you can override any UserControl Methods on your needs. In my test, I override the Method OnMouseLeftButtonDown to raise the RaiseTapEvent for UserControl, below is my edited MyButtonSimple.cs

 public class MyButtonSimple:UserControl  
    {  
        // Create a custom routed event by first registering a RoutedEventID  
        // This event uses the bubbling routing strategy  
        public static readonly RoutedEvent TapEvent = EventManager.RegisterRoutedEvent(  
            "Tap", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(MyButtonSimple));  
  
        // Provide CLR accessors for the event  
        public event RoutedEventHandler Tap  
        {  
            add { AddHandler(TapEvent, value); }  
            remove { RemoveHandler(TapEvent, value); }  
        }  
        // This method raises the Tap event  
        void RaiseTapEvent()  
        {  
            RoutedEventArgs newEventArgs = new RoutedEventArgs(MyButtonSimple.TapEvent);  
            RaiseEvent(newEventArgs);  
        }  
        // For demonstration purposes we raise the event when the MyButtonSimple is clicked  
  
        protected override void OnMouseLeftButtonDown(MouseButtonEventArgs e)  
        {  
            RaiseTapEvent();  
        }  
    }  

To use it in MainWindow.xaml:

  <local:MyButtonSimple Width="180" Height="30" Background="Aqua" Tap="MyButtonSample_Tab" ></local:MyButtonSimple>  

The MainWindow.xaml.cs code is:

 private void MyButtonSample_Tab(object sender, RoutedEventArgs e)  
        {  
            MessageBox.Show("This is MyButtonSimple:UserControl.");  
        }  

When I clicked the MyButtonSimple, the result picture is:

This is my understanding for youe question, if I misunderstand, please point out and descibe your question in details which will beneficial for me to analyze.

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