Creating C# WPF Form with Transparent Blurred Background

Question

i'm going to create a C# WPF Form with Transparent blurred Background.

I want this form show In front of my desktop and any application behind is blurred

Here is my example created with photoshop:

Additional Question: Can I do it on C# Windows Form, or Have a library can help me do it ??? Thank you very much.

Answer 1

In WPF Window Form, it's belong to your OS Window:

• Windows 10: Solution using SetWindowCompositionAttribute
• Windows 8: No solution
• Windows 7: You can continue to use DwmEnableBlurBehindWindow