按照客户要求将excel导出文件保存为一个条码一条记录，名称为SN_结果_时间.xslx

SLZ_4/ScanNetwork.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using System.Net.Sockets;
+using System.Threading;
+
+namespace SLZ_4
+{
+    public class ScanNetwork : IDisposable   // TCP扫码枪客户端类
+    {
+        private TcpClient tcpClient;
+        private NetworkStream networkStream;
+        private string ipAddress;
+        private int port;
+        public int codeLength;
+        private readonly Action<string> onDataReceived;
+        private readonly Action<string> onErrorReceived;
+        private readonly Action<string> onStatusUpdate;
+        public bool isRunning { get; set; }
+
+        public bool IsConnected
+        {
+            get
+            {
+                return tcpClient?.Client != null &&
+                       tcpClient.Connected &&
+                       networkStream?.CanRead == true;
+            }
+        }
+
+        public ScanNetwork(string ip, int iport, int icodeLength,
+                          Action<string> ionDataReceived,
+                          Action<string> ionError,
+                          Action<string> ionStatusUpdate)
+        {
+            ipAddress = ip;
+            port = iport;
+            codeLength = icodeLength;
+            onDataReceived = ionDataReceived;
+            onErrorReceived = ionError;
+            onStatusUpdate = ionStatusUpdate;
+        }
+
+        public bool Connect()
+        {
+            string str = "";
+            try
+            {
+                tcpClient = new TcpClient();
+                tcpClient.Connect(ipAddress, port);
+                networkStream = tcpClient.GetStream();
+                isRunning = true;
+
+                // 启动接收线程
+                Thread receiveThread = new Thread(ReceiveData);
+                receiveThread.IsBackground = true;
+                receiveThread.Start();
+
+                str = "TCP扫码枪连接成功:" + ipAddress + ":" + port;
+                onStatusUpdate?.Invoke(str);
+                FileLogger.Log(str, LogLevel.INFO);
+                return true;
+            }
+            catch (Exception ex)
+            {
+                str = $"连接TCP扫码枪失败: {ex.Message} {ipAddress} : {port}";
+                onStatusUpdate?.Invoke(str);
+                FileLogger.Log(str, LogLevel.ERROR);
+                return false;
+            }
+        }
+
+        public bool Reconnect(string newIp, int newPort)
+        {
+            // 先断开当前连接
+            Disconnect();
+
+            // 更新IP和端口
+            ipAddress = newIp;
+            port = newPort;
+
+            // 重新连接
+            return Connect();
+        }
+
+        public void Disconnect()
+        {
+            isRunning = false;
+            networkStream?.Close();
+            tcpClient?.Close();
+            string str = "TCP扫码枪已断开: " + ipAddress + ":" + port;
+            onStatusUpdate?.Invoke(str);
+            FileLogger.Log(str, LogLevel.WARNING);
+        }
+
+        public void SendStartCommand()
+        {
+            try
+            {
+                if (IsConnected)
+                {
+                    string data = "73 74 61 72 74";
+                    byte[] byt = StrtoHexbyte(data);
+                    networkStream.Write(byt, 0, byt.Length);
+                }
+                else
+                {
+                    onErrorReceived?.Invoke("发送扫码启动失败: 连接已断开");
+                }
+            }
+            catch (Exception ex)
+            {
+                onErrorReceived?.Invoke($"发送扫码启动失败: {ex.Message}");
+                Connect_Error();
+            }
+        }
+
+        private void ReceiveData()
+        {
+            byte[] buffer = new byte[1024];
+
+            while (isRunning)
+            {
+                try
+                {
+                    // 检查真实连接状态
+                    if (!IsConnected)
+                    {
+                        onStatusUpdate?.Invoke("扫码枪连接已断开，尝试重连...");
+                        Reconnect(ipAddress, port); // 自动重连
+                        Thread.Sleep(2000);
+                        continue;
+                    }
+
+                    if (networkStream?.DataAvailable == true)
+                    {
+                        int bytesRead = networkStream.Read(buffer, 0, buffer.Length);
+                        if (bytesRead > 0)
+                        {
+                            string code = Encoding.Default.GetString(buffer, 0, bytesRead);
+                            string cleanCode = code.Replace("\r\n", "").Trim();
+                            onDataReceived?.Invoke(cleanCode);
+
+                            if (cleanCode.Length != codeLength)
+                            {
+                                onStatusUpdate?.Invoke($"当前条形码长度为{cleanCode.Length}，所设置的条码长度为{codeLength}");
+                            }
+                        }
+                    }
+                    Thread.Sleep(100); // 稍微延迟以减少CPU占用
+                }
+                catch (Exception ex)
+                {
+                    onErrorReceived?.Invoke($"扫码枪接收数据异常: {ex.Message}");
+                    Connect_Error();
+                    Thread.Sleep(1000);
+                }
+            }
+        }
+
+        // l连接异常
+        private void Connect_Error()
+        {
+            isRunning = false;
+            networkStream?.Close();
+            tcpClient?.Close();
+
+            string str = $"扫码枪连接异常，已断开: {ipAddress}:{port}";
+            onStatusUpdate?.Invoke(str);
+            FileLogger.Log(str, LogLevel.WARNING);
+        }
+
+        //将发送数据转为十六进制数据
+        public static byte[] StrtoHexbyte(string hexString)
+        {
+            hexString = hexString.Replace(" ", "");
+            byte[] returnBytes = new byte[hexString.Length / 2];
+            for (int i = 0; i < returnBytes.Length; i++)
+            {
+                returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
+            }
+            return returnBytes;
+        }
+
+        public void Dispose()
+        {
+            Disconnect();
+            tcpClient?.Dispose();
+            networkStream?.Dispose();
+        }        
+    }
+}