Opacity is not getting applied in WPF PopupControl.

Question

Popup popUpControl = new Popup();

popUpControl.PlacementTarget = this;

popUpControl.StaysOpen = true;

popUpControl.Child = new MyUserControl(); /// my user control

popUpControl.Opacity = 0.5; // this code has no effect in the appearance of the popup

popUpControl.IsOpen = true;

how to do ? Thanks in advance.

Answer 1

You should Enable Popup to have Transparency. Add following line of code.

popUpControl.AllowsTransparency=true;

Answer 2

you need to set the opacity on the popup content. So for your button have poUp.Child = new Button() { Width = 300, Height = 50, Background = Brushes.Gray, Opacity = 0.5 };