Themes in windows C # application

Question

Windows Task Manager shows four threads for my simple C # Windows application. What are they needed for?

Answer 1

• Main stream
• Debug stream
• Finalizer thread
• GDI stream + rendering

A source

Answer 2

A good discussion of the topic in this thread:

http://bytes.com/topic/c-sharp/answers/588402-do-nothing-winform-app-using-4-threads