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SourceFilter Class

Indicates whether a listener should trace a message based on the source of a trace.

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

Public Class SourceFilter _
	Inherits TraceFilter
Dim instance As SourceFilter

One of several different types of filters can be assigned to a trace listener to provide a layer of screening beyond that provided by the trace switch. The filter can be used to control the level of tracing that is produced by the listener.

This class filters events based on a specific trace source set by the user.

SourceFilter overrides the ShouldTrace method and defines a Source property that specifies the name of the trace source to be traced by the listener.


This filter is provided because multiple trace sources can simultaneously use the same trace listener.


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 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

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