Access WMI in C# ?
- From: "Henry" <atnorthend_SPAM_@xxxxxxxxxxx>
- Date: Sat, 7 Apr 2007 11:58:03 -0700
Below is the code I am trying to use in a console application, each time I
run it I get an Management error Illegal Class error. I have traced the
error to the \"Win32_Process\" line, apparently the wmi path is incorrect.
Tried to run the app on both xp and vista with the same error. Could
someone suggest how I might correct this wmi path variable???
Thanks
Henry
+++++++++++++++++++++++++++++++++++++++++++++++++++++
public static void WriteToEventLog()
{
WqlEventQuery DemoQuery = new
WqlEventQuery("_InstanceCreationEvent", new TimeSpan(0, 0, 1),
"TargetInstance isa \"Win32_Process\" ");
ManagementEventWatcher DemoWatcher = new
ManagementEventWatcher();
DemoWatcher.Query = DemoQuery;
DemoWatcher.Options.Timeout = new TimeSpan(0, 0, 30);
Console.WriteLine("Open an application to trigger an Event.");
ManagementBaseObject e = DemoWatcher.WaitForNextEvent();
EventLog DemoLog = new EventLog("Chap10Demo");
DemoLog.Source = "Chap10Demo";
String EventName =
((ManagementBaseObject)e["TargetInstance"])["Name"].ToString();
Console.WriteLine(EventName);
DemoLog.WriteEntry(EventName, EventLogEntryType.Information);
DemoWatcher.Stop();
}
+++++++++++++++++++++++++++++++Error follows
Open an application to trigger an Event.
Unhandled Exception: System.Management.ManagementException: Invalid class
at System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStat
us errorCode)
at System.Management.ManagementEventWatcher.WaitForNextEvent()
at ManagementEvents1.Program.WriteToEventLog() in I:\Projects\ManagementEvent
s1\ManagementEvents1\Program.cs:line 29
at ManagementEvents1.Program.Main(String[] args) in I:\Projects\ManagementEve
nts1\ManagementEvents1\Program.cs:line 14
Press any key to continue . . .
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