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Trace.Listeners Property

Updated: September 2008

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

Namespace:  System.Diagnostics
Assembly:  System (in System.dll)

'Declaration
Public Shared ReadOnly Property Listeners As TraceListenerCollection
'Usage
Dim value As TraceListenerCollection 

value = Trace.Listeners

Property Value

Type: System.Diagnostics.TraceListenerCollection
A TraceListenerCollection that represents a collection of type TraceListener monitoring the trace output.

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.

NoteNote:

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.

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

' Create a ConsoleTraceListener and add it to the trace listeners.  
Dim myWriter As New ConsoleTraceListener()
Trace.Listeners.Add(myWriter)

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5

XNA Framework

Supported in: 3.0, 2.0, 1.0

Date

History

Reason

September 2008

Added information about the Listeners collection being shared with Debug.

Customer feedback.

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