C#简单实现发送socket字符串

private void button1_Click(object sender, EventArgs e)
    {
      String string1 = "测试数据123测试数据ABC";
      byte[] buffer = new byte[2048];
      buffer = Encoding.Default.GetBytes(string1);

      Socket socket = new Socket(AddressFamily.InterNetwork,
        SocketType.Stream, ProtocolType.Tcp);
      socket.Connect("10.2.3.101", 9100);
      socket.Send(buffer);
      socket.Close();
      MessageBox.Show("发送完毕");
    }

using System.Net.Sockets;