C# 使用Socket对接

internal void PrintNew()
{
    //1.创建Socket对象
    Socket clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
    IPAddress ip = IPAddress.Parse("xxx.xxx.x.xxx");
    //2.绑定IP和端口
    IPEndPoint endpoint = new IPEndPoint(ip, int.Parse("6000"));
    try
    {
        //这里客户端套接字连接到网络节点(服务端)用的方法是Connect 而不是Bind
        clientSocket.Connect(endpoint);
        //MessageBox.Show("ip连接成功...");
    }
    catch
    {
        MessageBox.Show("与系统连接失败，请检查计算机以及系统(新)！");
    }

    int[] selectRows = gridView1.GetSelectedRows();//获取当前列表行数 
    if (selectRows != null && selectRows.Length > 0)
    {
        StringBuilder builder = new StringBuilder();
        foreach (var row in selectRows)
        {
            if (this.gridView1.GetRowCellValue(row, "MachineNumber") != null)//机器代码
            {
                string Sampleno = "";
                string sampleno = this.gridView1.GetRowCellValue(row, "SampleNO").ToString();//蜡块号
                string[] samplenolist = sampleno.Split(',');
                for (int i = 0; i < samplenolist.Length; i++)
                {
                    if (i == 0)
                    {
                        Sampleno += samplenolist[i].ToString();
                    }
                    else
                    {
                        string[] samplenolistlist = samplenolist[i].ToString().Split('_');
                        for (int j = 0; j < samplenolistlist.Length; j++)
                        {
                            if (j == samplenolistlist.Length - 1)
                            {
                                Sampleno += "_" + samplenolistlist[j].ToString();
                            }
                        }
                    }
                }
                string rocheCode = this.gridView1.GetRowCellValue(row, "MachineNumber").ToString();//机器代码
                if (!string.IsNullOrEmpty(rocheCode))
                {
                    builder.Clear();
                    builder.Append(@"MSH|^~\&|PIS|Lab||BenchMark|");
                    builder.Append(DateTime.Now.ToString("yyyyMMddHHmmss"));
                    builder.Append("||OML^O21|");
                    builder.Append(DateTime.Now.ToString("yyyyMMddHHmmss") + DateTime.Now.Millisecond.ToString());
                    builder.Append("|P|2.4|");
                    builder.Append('\r');
                    builder.Append("ORC|NW|");
                    builder.Append(Sampleno);
                    builder.Append("|");
                    builder.Append('\r');
                    builder.Append("OBR|1|");
                    builder.Append(this.gridView1.GetRowCellValue(row, "CaseNO").ToString());
                    builder.Append("||");
                    builder.Append(rocheCode + "^" + this.gridView1.GetRowCellValue(row, "MarkerName").ToString());
                    builder.Append("^STAIN|||||||||||||||||||04926|||||");
                    builder.Append('\r');
                    byte[] sendMsg = Encoding.UTF8.GetBytes(builder.ToString());
                    byte[] bs = new byte[sendMsg.Length + 3];
                    bs[0] = 0x0b;
                    for (int i = 0; i < sendMsg.Length; i++)
                    {
                        bs[i + 1] = sendMsg[i];
                    }
                    bs[bs.Length - 2] = 0x1c;
                    bs[bs.Length - 1] = 0x0d;
                    clientSocket.Send(bs);
                    Thread.Sleep(100);
                }
            }
            else
            {
                MessageBox.Show("无机器码，请联系管理员！", "标签打印", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
            }
        }
    }
    else
    {
        MessageBox.Show("请选择您要打印记录！", "打印", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
    }
    //oGetArgThread.Abort();
    clientSocket.Shutdown(SocketShutdown.Both);
    clientSocket.Close();
}