Trigger mouseup event on keyup - WPF

Question

My question is simple. Is it possible to trigger mouseup and mousedown on keyup and keydown event respectivey in WPF.

I have set of event handlers for mouse down and mouse up in my custom control. I want to trigger the same if the user try to press the spacebar on my custom button.

    private void CustomButton_MouseDown(object sender, MouseButtonEventArgs e)
    {
        eventlabel.Content = "Mousedown event Triggered";            
    }

    private void CustomButton_MouseUp(object sender, MouseButtonEventArgs e)
    {
        eventlabel.Content = "MouseUp event Triggered";
    }

    private void CustomButton_KeyDown(object sender, KeyEventArgs e)
    {
        if (e.Key == Key.Space)
        {
            //Need to trigger all the handlers of mousedown
        }
    }

    private void CustomButton_KeyUp(object sender, KeyEventArgs e)
    {
        if (e.Key == Key.Space)
        {
            //Need to trigger all the handlers of mouseup
        }
    }

Sounds like [XY problem](http://meta.stackexchange.com/q/66377), are you trying to achieve something like [this](http://stackoverflow.com/q/8272681/1997232) ? — Sinatr, May 28 '15 at 08:50
Do you need to simulate mouse events or just execute the code in the event handler? If latter, just move it to the separate method and call it. — Sriram Sakthivel, May 28 '15 at 08:51
No. I have set of event handlers for mouse down and mouse up. I want to trigger the same if the user press the spacebar on my custom button. — Gopichandar, May 28 '15 at 08:59

score 2 · Answer 1 · answered May 28 '15 at 09:01

You can raise Events in all UIElements with RaiseEvent(EventArgs). The MouseButtonArgsEventsArgs can be used as followed in the KeyDown-EventHandler:

  MouseDevice mouseDevice = Mouse.PrimaryDevice;
  MouseButtonEventArgs mouseButtonEventArgs = new MouseButtonEventArgs(mouseDevice, 0, MouseButton.Left); 
  mouseButtonEventArgs.RoutedEvent = Mouse.MouseDownEvent;
  mouseButtonEventArgs.Source = this;
  RaiseEvent(mouseButtonEventArgs);

(modified example from https://social.msdn.microsoft.com/Forums/vstudio/de-DE/7ec6b75b-b808-48ca-a880-fafa9025da6e/how-to-raise-a-click-event-on-an-uielement?forum=wpf)

score 0 · Answer 2 · edited May 23 '17 at 11:54

0

Answer mentioned by Tobias works for me. But, it need some tweak.

elementName.RaiseEvent(new MouseButtonEventArgs(Mouse.PrimaryDevice, 0, MouseButton.Left)
{
  RoutedEvent = Mouse.MouseDownEvent,
  Source = this,
});

Here is the Reference

edited May 23 '17 at 11:54

Community

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answered May 28 '15 at 13:55

Gopichandar

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Trigger mouseup event on keyup - WPF

2 Answers2