building a program similiar to "task manager"

[G-Zola]

Suppose a process notepad.exe has started. I like to know how to detect a period of inactivity of a user for that process, for instance how long the user has not entered anything into notepad.Maybe System.Diagnostics can solve this problem but i did not find much information on the websites.Hope to gather some advice here.

Thanks a lot

[Iron_Cross]

Read about the ProcessInfo and ProcessStartInfo classes. Also, you could check into some of the win32 API functions that might be able to help with this task.