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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 : TraceFilter
public class SourceFilter extends TraceFilter
public class SourceFilter extends TraceFilter
Not applicable.

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 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0