DelimitedListTraceListener Class

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

Directs tracing or debugging output to a text writer, such as a stream writer, or to a stream, such as a file stream.

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

public class DelimitedListTraceListener : TextWriterTraceListener
public class DelimitedListTraceListener extends TextWriterTraceListener
public class DelimitedListTraceListener extends TextWriterTraceListener


The HostProtectionAttribute attribute applied to this class has the following Resources property value: Synchronization. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

The trace output is in a delimited text format that uses the delimiter specified by the Delimiter property.

You can enable or disable a DelimitedListTraceListener through the application configuration file and then use the configured DelimitedListTraceListener in your application. Alternately, you can create a DelimitedListTraceListener in your code.

To configure a DelimitedListTraceListener, edit the configuration file that corresponds to the name of your application. In this file, you can add a listener, set the properties for a listener, or remove a listener. The configuration file should be formatted like the following example:

    <trace autoflush="false" indentsize="4">
        <add name="delimitedListener" 
          traceOutputOptions="ProcessId, DateTime" />
        <remove name="Default" />

If an attempt is made to write to a file that is in use or unavailable, the file name is automatically prefixed by a GUID.


Listeners are intended to be used by methods of the Debug, Trace, and TraceSource classes to write trace information. Listener methods, other than constructors, are not intended to be called directly from application code.


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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