TraceListenerCollection Class

The TraceListenerCollection list is used to specify the output listeners for the Trace.Listeners and the Debug.Listeners collections. You cannot create an instance of this class.

This list is thread-safe, however the methods used to access the list and the enumerator do not take synchronization locks. Instead, the collection is copied, the copy is modified, and a reference is set to the copy of the collection. Methods like Add, Remove, and Clear modify the elements in the collection.

The TraceListenerCollection class provides the Count property for information about the list. It also provides the following methods: Contains, GetEnumerator, IndexOf.

This class also provides the following methods to modify the list: Add, Clear, Insert, and Remove. The CopyTo method copies a part of the list to an array. The RemoveAt method deletes the list member at a specified index number.

The following example creates a TextWriterTraceListener that writes to the console screen. The code then adds the new listener to the Trace.Listeners.

        /* Create a ConsoleTraceListener and add it to the trace listeners. */
        ConsoleTraceListener myWriter = new
           ConsoleTraceListener();
        Trace.Listeners.Add(myWriter);

.NET Framework

.NET Framework Client Profile

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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