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(); }