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Trace.Listeners Property


Gets the collection of listeners that is monitoring the trace output.

 static property System::Diagnostics::TraceListenerCollection ^ Listeners { System::Diagnostics::TraceListenerCollection ^ get(); };
public static System.Diagnostics.TraceListenerCollection Listeners { get; }
static member Listeners : System.Diagnostics.TraceListenerCollection
Public Shared ReadOnly Property Listeners As TraceListenerCollection

Property Value

A TraceListenerCollection that represents a collection of type TraceListener monitoring the trace output.


The following example creates a ConsoleTraceListener that outputs to the console screen. The code then adds the new listener to the Listeners.

// Create a ConsoletTraceListener and add it to the trace listeners.
#if defined(TRACE)
ConsoleTraceListener^ myWriter = gcnew ConsoleTraceListener( );
Trace::Listeners->Add( myWriter );
/* Create a ConsoleTraceListener and add it to the trace listeners. */
var myWriter = new ConsoleTraceListener();
' Create a ConsoleTraceListener and add it to the trace listeners. 
Dim myWriter As New ConsoleTraceListener()


The listeners produce formatted output from the trace output. By default, the collection contains an instance of the DefaultTraceListener class. If you want to remove the default listener, call the Remove method, and pass it the instance of the DefaultTraceListener. To redirect output to the console window, add an instance of the ConsoleTraceListener class.


The Listeners collection is shared by both the Debug and the Trace classes; adding a trace listener to either class adds the listener to both.

Applies to

See also