if(!EventLog.SourceExists(...)) {EventLog.CreateEventSource(...);}

EventLog.WriteEntry(...);

From the syntax, WriteEntry should be static, but in the documentation it is not. 
I am interested to find out why because this code will be called from different threads and only the static
members of EventLog are thread-safe.

Eventlog.WriteEntry has both static and non static members, check out http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdiagnosticseventlogclasswriteentrytopic4.asp

What overload in particular are you curious about?

Eventlog.WriteEntry has both static and non static members, check out http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfsystemdiagnosticseventlogclasswriteentrytopic4.asp

What overload in particular are you curious about?

Thank you ... I have read the documentation before but I think I was confusing one of the non-static versions with a static one. Now everything is clear.