PrintScreen from specific applications

PrintScreen from specific applications References I\'m writing a Child-Control Application in WPF(C#). It must control child\'s activity. I need to take many screen shots but it takes many spaces. So I decide to save screen shots from specific applications. How can I do it? For example: I want to take screen shots when firefox is running. The taken screen shots should be limited to its window region.like this: Any idea can help me... Thanks.