Question

i have a main control in wpf.
and many controls placed in main control.
when mouse moves over main control i want to find
over which control in main control mouse is placed.

Answer 1

Sounds like you want UIElement.InputHitTest. It takes in a 2D Point (relative to the UIElement’s location) and returns an IInputElement which UIElement implements. So for example…

Button button = myWindow.InputHitTest(mousePosition) as Button;
if (button != null)
    // Blahblahblah