Exceptions from EventRecordWrittenEventArgs are missing the original win32 error code #67702
Description
Description
One can retrieve a HResult error code from System.Diagnostics.Eventing.Reader.EventRecordWrittenEventArgs.EventException but it has no connection to the underlying win32 error code from the EvtNext function 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 the HResult code is -2146233088 (0x80131500). The win32 API error code for ERROR_INVALID_HANDLE is 6 (0x6).
Reproduction Steps
The MRE below subscribes to a non existing channel yielding an exception in the Watcher_EventRecordWritten handler.
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 behavior
The HResult from a EventRecordWrittenEventArgs.EventException should match the win32 error code returned from the EvtNext function (https://github.com/microsoft/referencesource/blob/5697c29004a34d80acdaf5742d7e699022c64ecd/System.Core/System/Diagnostics/Eventing/Reader/EventLogWatcher.cs#L228).
Actual behavior
The HResult from a EventRecordWrittenEventArgs.EventException does not match the actual error message.
All EventRecordWrittenEventArgs.EventException seem to return the same HResult and the EventException is of the base type Exception so 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