TraceListenerCollection.Contains Method

Checks whether the list contains the specified listener.

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

public bool Contains (
	TraceListener listener
public boolean Contains (
	TraceListener listener
public function Contains (
	listener : TraceListener
) : boolean



A TraceListener to find in the list.

Return Value

true if the listener is in the list; otherwise, false.

The Contains method can confirm the existence of a TraceListener before you perform further operations.

Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, 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, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

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