Raising WPF MouseLeftButtonDownEvent event

wpf events raise
TheWommies picture TheWommies · Mar 10, 2010 · Viewed 16.8k times · Source

I am trying ot raise a MouseLeftButtonDownEvent by bubbling it up the Visual tree with the following code.

         MouseButtonEventArgs args = new MouseButtonEventArgs(Mouse.PrimaryDevice,0,     MouseButton.Left);            
        args.RoutedEvent = UIElement.MouseLeftButtonDownEvent;
        args.Source = this;
        RaiseEvent(args);

For some reason the higher level components are not receiving this bubbled event. Am I overlooking something or is it not possible to raise this Mouse event

Answer

Ray Burns picture Ray Burns · Mar 11, 2010

Your problem is that you are raising an event that does not bubble.

MouseLeftButtonDownEvent is defined as RoutingStrategy.Direct, which means it is routed to only the control receiving the event.

You want to use Mouse.MouseDownEvent event instead. UIElement and other classes internally convert this into a MouseLeftButtonDownEvent. Make sure you set e.ChangedButton to MouseButton.Left:

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

Related questions

Is there Selected Tab Changed Event in the standard WPF Tab Control

In WPF, is there an event that can be used to determine when a TabControl's selected tab changes? I have tried using TabControl.SelectionChanged but it is getting fired many times when a child's selection within a tab is changed.

Read More
What's the difference between the Window.Loaded and Window.ContentRendered events

What's the difference between the Window.Loaded and Window.ContentRendered events in WPF? Is the ContentRendered event called first? The description of the Window.ContentRendered event here just says Occurs after a window's content has been rendered. The description of …

Read More
WPF datagrid selected row clicked event ?

I want to execute some code when a a selected row of the WPF DataGrid is double clicked. I know that the datagrid has a MouseDoubleClicked event and that it also has a row selected event but I don't see …

Read More