Exceptions from EventRecordWrittenEventArgs are missing the original win32 error code #67702
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Tagging subscribers to this area: @tarekgh, @tommcdon, @pjanotti Issue DetailsDescriptionOne can retrieve a For example subscribing to an non existing log channel gives the error Reproduction StepsThe MRE below subscribes to a non existing channel yielding an exception in the private static void Test1()
{
var query = new EventLogQuery(null, PathType.LogName, "<QueryList><Query Id=\"0\"><Select Path=\"non-existing-channel\">*</Select></Query></QueryList>");
var watcher = new EventLogWatcher(query);
watcher.EventRecordWritten += Watcher_EventRecordWritten;
watcher.Enabled = true;
EventLog.WriteEntry("dummy source", "Dummy test message");
Thread.Sleep(1000 * 60);
watcher.Enabled = false;
Console.WriteLine("Test 1 completed");
}
private static void Watcher_EventRecordWritten(object sender, EventRecordWrittenEventArgs e)
{
if (e.EventRecord == null) {
Console.WriteLine(e.EventException.Message);
Console.WriteLine(e.EventException.HResult);
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(string.Format("HRESULT:0x{0:X8}", e.EventException.HResult));
Console.ForegroundColor = ConsoleColor.White;
} else
{
Console.WriteLine(e.EventRecord.FormatDescription());
e.EventRecord.Dispose();
}
}Expected behaviorThe Actual behaviorThe Regression?No response Known WorkaroundsNo response Configuration.NET 6 Other informationNo response
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Tagging subscribers to this area: @dotnet/area-system-diagnostics-eventlog Issue DetailsDescriptionOne can retrieve a For example subscribing to an non existing log channel gives the error Reproduction StepsThe MRE below subscribes to a non existing channel yielding an exception in the private static void Test1()
{
var query = new EventLogQuery(null, PathType.LogName, "<QueryList><Query Id=\"0\"><Select Path=\"non-existing-channel\">*</Select></Query></QueryList>");
var watcher = new EventLogWatcher(query);
watcher.EventRecordWritten += Watcher_EventRecordWritten;
watcher.Enabled = true;
EventLog.WriteEntry("dummy source", "Dummy test message");
Thread.Sleep(1000 * 60);
watcher.Enabled = false;
Console.WriteLine("Test 1 completed");
}
private static void Watcher_EventRecordWritten(object sender, EventRecordWrittenEventArgs e)
{
if (e.EventRecord == null) {
Console.WriteLine(e.EventException.Message);
Console.WriteLine(e.EventException.HResult);
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine(string.Format("HRESULT:0x{0:X8}", e.EventException.HResult));
Console.ForegroundColor = ConsoleColor.White;
} else
{
Console.WriteLine(e.EventRecord.FormatDescription());
e.EventRecord.Dispose();
}
}Expected behaviorThe Actual behaviorThe Regression?No response Known WorkaroundsNo response Configuration.NET 6 Other informationNo response
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Description
One can retrieve a
HResulterror code fromSystem.Diagnostics.Eventing.Reader.EventRecordWrittenEventArgs.EventExceptionbut it has no connection to the underlying win32 error code from theEvtNextfunction used (https://github.com/microsoft/referencesource/blob/master/System.Core/System/Diagnostics/Eventing/Reader/EventLogWatcher.cs#L228).For example subscribing to an non existing log channel gives the error
The handle is invalid.but theHResultcode is -2146233088 (0x80131500). The win32 API error code forERROR_INVALID_HANDLEis 6 (0x6).Reproduction Steps
The MRE below subscribes to a non existing channel yielding an exception in the
Watcher_EventRecordWrittenhandler.Expected behavior
The
HResultfrom aEventRecordWrittenEventArgs.EventExceptionshould match the win32 error code returned from theEvtNextfunction (https://github.com/microsoft/referencesource/blob/5697c29004a34d80acdaf5742d7e699022c64ecd/System.Core/System/Diagnostics/Eventing/Reader/EventLogWatcher.cs#L228).Actual behavior
The
HResultfrom aEventRecordWrittenEventArgs.EventExceptiondoes not match the actual error message.All
EventRecordWrittenEventArgs.EventExceptionseem to return the sameHResultand theEventExceptionis of the base typeExceptionso there is no way to different between different errors.Regression?
No response
Known Workarounds
No response
Configuration
.NET 6
Windows 10 21H2 (OS Build 19043.1586)
x64
Other information
No response
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