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group:Access WMI in C# ?
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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 . . . -- ~ Most good judgment comes from experience. Most experience comes from bad judgment. ~I'm leaning towards bad judgment.~
[Willy doing WMI Stuff]
You always have the coolest WMI stuff handy. Have you written a FAQ on it anywhere, or archived all your examples? -- Chris Mullins, MCSD.NET, MCPD:Enterprise, Microsoft C# MVP http://www.coversant.com/blogs/cmullins
[quoted text, click to view]
"Henry" <atnorthend_SPAM_@hotmail.com> wrote in message news:3983A93E-E059-4635-9CAC-B9329D07715E@microsoft.com... > 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 . . . > > -- > ~ > Most good judgment comes from experience. > Most experience comes from bad judgment. > ~I'm leaning towards bad judgment.~ > > Notice the space at the end of .. "TargetInstance isa \"Win32_Process\" "); should be... "TargetInstance isa \"Win32_Process\""); Willy.
Well, I wish it was that easy, corrected the space as you suggested, here is
the error... It really seems to be a problem with the watcher, but what do I know??? Henry [quoted text, click to view] >>>> 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 . . . [quoted text, click to view] >>>>
"Willy Denoyette [MVP]" <willy.denoyette@telenet.be> wrote in message news:ei#Q#0qeHHA.208@TK2MSFTNGP05.phx.gbl... > "Henry" <atnorthend_SPAM_@hotmail.com> wrote in message > news:3983A93E-E059-4635-9CAC-B9329D07715E@microsoft.com... >> 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 . . . >> >> -- >> ~ >> Most good judgment comes from experience. >> Most experience comes from bad judgment. >> ~I'm leaning towards bad judgment.~ >> >> > > > > > > Notice the space at the end of .. > "TargetInstance isa \"Win32_Process\" "); > > should be... > "TargetInstance isa \"Win32_Process\""); > > Willy. >
[quoted text, click to view]
"Henry" <atnorthend_SPAM_@hotmail.com> wrote in message news:961CDCBC-6AE3-497A-81C9-53C9473ECF16@microsoft.com... > Well, I wish it was that easy, corrected the space as you suggested, here is the error... > It really seems to be a problem with the watcher, but what do I know??? > > Henry >>>>> > 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 . . . > Sorry missed this one... _InstanceCreationEvent should be: __InstanceCreationEvent notice the double underscore! Willy.
[quoted text, click to view]
"Chris Mullins [MVP]" <cmullins@yahoo.com> wrote in message news:OLz5nbteHHA.2640@TK2MSFTNGP06.phx.gbl... > [Willy doing WMI Stuff] > > You always have the coolest WMI stuff handy. Have you written a FAQ on it anywhere, or > archived all your examples? > > -- > Chris Mullins, MCSD.NET, MCPD:Enterprise, Microsoft C# MVP > http://www.coversant.com/blogs/cmullins > Chris, a have an archive of samples, I just have to clean them up and add some comments, I will save some time to do this and keep you informed here. As for the FAQ, I keep some inter-company kind of Knowledge Base articles, but I'm afraid I can't publish them as they are, I will see what I can do to turn this stuff into some publically available FAQ . Willy.
[quoted text, click to view]
On Apr 7, 8:58 pm, "Henry" <atnorthend_SP...@hotmail.com> wrote: > 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 . . . > > -- > ~ > Most good judgment comes from experience. > Most experience comes from bad judgment. > ~I'm leaning towards bad judgment.~ If you want to play around with WMI (find right syntax etc.) try to use WMI Creator: http://www.microsoft.com/downloads/details.aspx?familyid=2cc30a64-ea15-4661-8da4-55bbc145c30e&displaylang=en Marian
Yes, thanks for the excellent help, and I did find the WMI Creator, it is a
great help for finding proper syntax... Again Thanks Henry [quoted text, click to view] <majlathm@gmail.com> wrote in message
news:1176192862.434100.305090@d57g2000hsg.googlegroups.com... > On Apr 7, 8:58 pm, "Henry" <atnorthend_SP...@hotmail.com> wrote: >> 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 . . . >> >> -- >> ~ >> Most good judgment comes from experience. >> Most experience comes from bad judgment. >> ~I'm leaning towards bad judgment.~ > > If you want to play around with WMI (find right syntax etc.) try to > use WMI Creator: > > http://www.microsoft.com/downloads/details.aspx?familyid=2cc30a64-ea15-4661-8da4-55bbc145c30e&displaylang=en > > Marian
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