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Active Property
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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: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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