TCPListener missing from System.Net.Sockets namespace

Question

I'm using TCPListener which according to this page should be in System.Net.Sockets, I have

using System.Net;
using System.Net.Sockets;
...
TCPListener tcpListener = new TCPListener(10);

Visual Studio is producing the following error

Error 1 The type or namespace name 'TCPListener' could not be found (are you missing a using directive or an assembly reference?) C:\path\WindowsService.cs 85 13 Windows Service Test1

Did I miss something?

Answer 1

Make sure you have also added a reference to System.Net component.

Answer 2

You need to spell it correctly: it's TcpListener, not TCPListener. C# is case-sensitive.

Answer 3

It's case sensitive, i.e. TcpListener

Answer 4

Try changing your code to

using System.Net;
using System.Net.Sockets;
...
TcpListener tcpListener = new TcpListener(10);

C# is case sensitive and the TCP section should be Tcp.

HTH

OneSHOT