How do I darken all screen area and glow my opened window in WPF?

Question

In WPF, how do I darken all screen area when opening a new window?

Also after the window is closed, how do I revert the temporary effect?

Answer 1

easiest way:use XAML pop-up as described below

For more details visit below link. http://www.c-sharpcorner.com/UploadFile/mahesh/using-xaml-popup-in-wpf/

After this to blur the main grid on eventhandler for the event which shows the pop-up,set the opacity as shown in below C# code

if (pop.IsOpen == false)    
{    
pop.IsOpen = true;    
grdMain.Opacity = 0.4;    
}    
else    
{    
pop.isopen=false;    
}