Getting Socket Port Numbers

I have an application that I am converting from Java, and one of the things that the application must do is to read the port number for a socket (client or server). I have been all through the documentation for Socket and TcpListener, but I cannot find a property or method that will give me the port number. The specific Java code I am trying to implement in C# is:

if ( null != this.client_Socket )
{
iPort = this.client_Socket.getPort();
}
else if ( null != this.server_Socket )
{
iPort = this.server_Socket.getLocalPort();
}

Does anyone know how I can get the port numbers?

Something like this(not tested):

Code:

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IPEndPoint endp =(IPEndpoint)this.clientSocket.LocalEndpoint;
iPort = endp.Port;

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