Namespace:
System.Diagnostics.Eventing
Assembly:
System.Core (in System.Core.dll)
Visual Basic (Declaration)
<HostProtectionAttribute(SecurityAction.LinkDemand, MayLeakOnAbort := True)> _
Public Class EventProviderTraceListener _
Inherits TraceListener
Dim instance As EventProviderTraceListener
[HostProtectionAttribute(SecurityAction.LinkDemand, MayLeakOnAbort = true)]
public class EventProviderTraceListener : TraceListener
[HostProtectionAttribute(SecurityAction::LinkDemand, MayLeakOnAbort = true)]
public ref class EventProviderTraceListener : public TraceListener
public class EventProviderTraceListener extends TraceListener
All event data (trace or debug) from the source event is written to the ETW subsystem as a string. The data elements are delimited using a comma. To specify a different delimiter, use the Delimiter property.
Adding the listener to System.Diagnostics..::.TraceSource registers the provider with the ETW subsystem. You must create an ETW trace session using the Logman.exe executable program (or something similar) to write the events to a log file.
You do not need a manifest to consume events from the listener because the event data is a single string.
When you call the System.Diagnostics..::.TraceSource methods to write events, you pass a TraceEventType enumeration value. The enumeration contains both level and keyword values. When you enable a trace listener provider from an ETW session, the level value that you specify can be the value associated with one of the following TraceEventType enumeration values:
Critical (value is 1)
Error (value is 2)
Information (value is 8)
Verbose (value is 16)
Warning (value is 4)
The keyword value that you specify for the session can be the value associated with one of the following TraceEventType enumeration values:
private static Guid providerId = new Guid("{B3F0C8FC-E8A8-4868-8901-1465E8A2F41B}");
EventProviderTraceListener listener = new EventProviderTraceListener(providerId.ToString(), "Test Listener", "::");
// You should use the All default level and control the level using the
// ETW session; otherwise, you may not log all the events requested by the
// session.
TraceSource source = new TraceSource("MyProvider", SourceLevels.All);
source.Listeners.Add(listener);
source.TraceData(TraceEventType.Warning | TraceEventType.Start, 2, new object[] { "abc", "def", true, 123 });
source.TraceEvent(TraceEventType.Warning, 12, "Provider guid: {0}", new object[] { providerId });
source.TraceInformation("string {0}, bool {1}, int {2}, ushort {3}", new object[] { "abc", false, 123, (UInt32)5 });
System..::.Object
System..::.MarshalByRefObject
System.Diagnostics..::.TraceListener
System.Diagnostics.Eventing..::.EventProviderTraceListener
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
Windows 7, Windows Vista, Windows Server 2008 R2, Windows Server 2008
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5
Reference