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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
Not applicable.



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 Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0