EventLog.Exists Method (String, String)
Assembly: System (in system.dll)
'Declaration Public Shared Function Exists ( _ logName As String, _ machineName As String _ ) As Boolean 'Usage Dim logName As String Dim machineName As String Dim returnValue As Boolean returnValue = EventLog.Exists(logName, machineName)
The log for which to search. Possible values include: Application, Security, System, other application-specific logs (such as those associated with Active Directory), or any custom log on the computer.
The name of the computer on which to search for the log, or "." for the local computer.
Return Valuetrue if the log exists on the specified computer; otherwise, false.
The machineName parameter is an invalid format. Make sure you have used proper syntax for the computer on which you are searching.
The logName is a null reference (Nothing in Visual Basic) or the value is empty.
Use this method to determine if a log exists on a remote computer. If you want to determine whether a source exists on a remote computer, use SourceExists.
Because this method accesses the registry, you must have the appropriate registry permissions on the specified computer; otherwise, the query returns false.
Because you cannot give a new log the name of an existing log on the same computer, use this method before creating a new log to determine if one with the specified logName already exists on the server specified by the machineName parameter. The logName and machineName parameters are not case sensitive.