Hi. I have a UserControl in WPF. The UserControl has a MouseLeftButtonUp event. The problem is- the Window has a this.DragMove() method in its MouseDown event which seems to interfere with the MouseLeftButtonUp event in the User Control (I need the this.DragMove() method to move the borderless window). If I call the dragmove method in the Window's MouseDown event, then if I click on the user control- the MouseLeftButtonUp event doesn't fire. But if I don't call the dragmove method- the MouseLeftButtonUp event works fine. Any ideas? Thanks!