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TraceListener.Attributes Property

Gets the custom trace listener attributes defined in the application configuration file.

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

public StringDictionary Attributes { get; }

Property Value

Type: System.Collections.Specialized.StringDictionary
A StringDictionary containing the custom attributes for the trace listener.

Classes that inherit from the TraceListener class can add custom attributes by overriding the GetSupportedAttributes method and returning a string array of custom attribute names. The Attributes property identifies the custom attributes that are referenced in the application's configuration file. For example, in the following configuration file excerpt the DelimitedListTraceListener custom attribute "delimiter" is referenced. In this case, the Attributes property returns a StringDictionary containing the string "delimiter".

<listeners>
  <add name="delimitedListener" 
    type="System.Diagnostics.DelimitedListTraceListener" 
    delimiter=":" 
    initializeData="delimitedOutput.txt" 
    traceOutputOptions="ProcessId, DateTime" />
  <remove name="Default" />
</listeners>

Unreferenced custom attributes are not enumerated. For more information, see the GetSupportedAttributes method.

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

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