Fire event when WPF button was pressed/unpressed

I need to fire some event wh开发者_开发知识库en WPF button is pressed (by mouse, keyboard, touchscreen, etc) and to fire event when WPF buttons is unpressed.

How to do this? It should be easy but I can't find how to do this.

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You can derive from Button and override the OnIsPressedChanged method and fire a custom event there.

Or you can bind to the ButtonBase.IsPressed property.

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Another option is to use DependencyPropertyDescriptor:

var descriptor = DependencyPropertyDescriptor.FromProperty(Button.IsPressedProperty, typeof(Button));
descriptor.AddValueChanged(this.button, new EventHandler(IsPressedChanged));

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If you are using MVVM, you can use event triggers to solve your problem. This way, you can still separate your UI requirements from your application logic.

• Example 1
• Example 2