Problem
You want to add an entry to an event log.
Solution
To write to an event log, use the –List parameter on the GetEventLog cmdlet to retrieve the proper event log. Then, set its source to a registered event log source and call its WriteEntry() method:
PS >$log = GetEventLog List | WhereObject { $_.Log eq "ScriptEvents" } PS >$log.Source = "PowerShellCookbook" PS >$log.WriteEntry("This is a message from my script.") PS > PS >GetEventLog ScriptEvents Newest 1 | Select Source,Message
Source
Message
PowerShellCookbook
This is a message from my script.
Discussion
As the solution mentions, you must set the event log’s Source property to a registered event log source before you can write information to the log. If you have not already registered an event log source on the system.
