How to know when was Windows started or shutdown?

Question

I need to develop a program in C# find out when was Windows started or shutdown.

Is there a log file that I can read to know Windows start and shutdown times? Or do

Answer 1

Some more options:

• Get the date-time of last windows shutdown event using .NET
• http://www.codeproject.com/KB/cs/GetLastRebootTime.aspx