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TraceFilter Class

Note: This class is new in the .NET Framework version 2.0.

Provides the base class for trace filter implementations.

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

public abstract class TraceFilter
public abstract class TraceFilter
public abstract class TraceFilter

Trace filters can be used by trace listeners to provide an extra layer of filtering beyond that provided by trace switches. The trace filter for a trace listener can be found in the listener's Filter property. Trace switches determine if a trace is to be sent to the trace listeners. Trace filters allow the individual trace listeners to determine whether or not the trace is to be written to the associated output medium. For example, as determined by each trace filter, a trace may be written to the console by a ConsoleTraceListener, but not to the event log by a EventLogTraceListener.

Filters that inherit from the TraceFilter class can be used by trace listeners that inherit from the TraceListener class to perform filtering of events being traced. TraceFilter contains a single method, ShouldTrace, which takes event data and returns a flag indicating whether the event should be traced.

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 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0
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