TcpListener.Active Property

Gets a value that indicates whether TcpListener is actively listening for client connections.

Namespace:  System.Net.Sockets
Assembly:  System (in System.dll)

protected bool Active { get; }

Property Value

Type: System.Boolean
true if TcpListener is actively listening; otherwise, false.

Classes deriving from TcpListener can use this property to determine if the Socket is currently listening for incoming connection attempts. The Active property can be used to avoid redundant Start attempts.

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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

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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