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IP打印机控制
public static bool tcpPrintCode(string PrinterPort, byte[] cmdBytes) { // PrinterPort // ip address if (PrinterPort.Trim() == string.Empty) return false; bool result = false; TcpClient tcp = new TcpClient(); string TcpIpAddress = PrinterPort.Trim(); int TcpPort = 9100; try { tcp.Connect(System.Net.IPAddress.Parse(TcpIpAddress), TcpPort); // tcp = TimeoutSocket.Connect(string.Empty, TcpIpAddress, TcpPort, 1000); tcp.SendTimeout = 1000; tcp.ReceiveTimeout = 1000; if (tcp.Connected) { tcp.Client.Send(cmdBytes); result = true; } } catch { // throw new Exception("打印失败，请检查打印机或网络设置。", ex); } finally { if (tcp != null) { if (tcp.Client != null) { tcp.Client.Close(); tcp.Client = null; } tcp.Close(); tcp = null; } } // Thread.Sleep(1000); return result; } byte[] cmdBytes = Txt2Byte(CommString); public static byte[] Txt2Byte(string str) { return System.Text.Encoding.GetEncoding("GB2312").GetBytes(str); } public static byte[] Str2Byte(string str) { return System.Text.Encoding.GetEncoding("ascii").GetBytes(str); } |