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587 lines
25 KiB
C#
587 lines
25 KiB
C#
using MvCodeReaderSDKNet;
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using System;
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using System.Collections.Generic;
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using System.Drawing;
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using System.Runtime.InteropServices;
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using System.Text;
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using System.Threading.Tasks;
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using System.Threading;
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using static System.Runtime.CompilerServices.RuntimeHelpers;
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using HighWayIot.Log4net;
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using HighWayIot.Config;
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using System.Security.Policy;
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namespace Aucma.Core.Scanner
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{
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public class MvCodeHelper
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{
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private static LogHelper logHelper = LogHelper.Instance;
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private static AppConfig appConfig = AppConfig.Instance;
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public static bool m_bGrabbing = true;
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private static string SheellLastCode;
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private static string LinerLastCode;
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// 入库扫码器ip
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private static string ShellScannerIp = appConfig.foamHikRobotIp;
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// 出库扫码器ip
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private static string LinerScannerIp = appConfig.foamOutHikRobotIp;
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#region 全局变量定义
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public static DateTime ShellLiveTime = DateTime.Now;
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public static DateTime LinerLiveTime = DateTime.Now;
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#endregion
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#region 委托事件
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/// <summary>
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/// 刷新扫码器状态
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/// </summary>
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/// <param name="materialCodeStr"></param>
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/// <param name="ip"></param>
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public delegate void RefreshState(string ip, bool flag);
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public static event RefreshState RefreshStateEvent;
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//NoRead事件通知
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public delegate void MessageNoRead();
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public static event MessageNoRead MessageNoReadEvent;
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//入库扫码
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public delegate void RefreshMaterialCodeStr(string materialCodeStr);
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public static event RefreshMaterialCodeStr RefreshMaterialCodeStrEvent;
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//出库扫码
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public delegate void OutMaterialCodeStr(string materialCodeStr);
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public static event OutMaterialCodeStr OutMaterialCodeStrEvent;
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/// <summary>
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/// 日志信息刷新
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/// </summary>
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/// <param name="message"></param>
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public delegate void RefreshLogMessage(string message);
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public static event RefreshLogMessage RefreshLogMessageEvent;
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#endregion
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public static void ShellImageCallbackFunc(IntPtr pData, IntPtr pstFrameInfoEx2, IntPtr pUser)
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{
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var stFrameInfo = (MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2)Marshal.PtrToStructure(pstFrameInfoEx2, typeof(MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2));
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MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2 stBcrResult = (MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2)Marshal.PtrToStructure(stFrameInfo.UnparsedBcrList.pstCodeListEx2, typeof(MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2));
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// Console.WriteLine("CodeNum[" + Convert.ToString(stBcrResult.nCodeNum) + "]");
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if (stBcrResult.nCodeNum == 0)
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{
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//更新扫码器存活时间
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ShellLiveTime = DateTime.Now;
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Console.WriteLine("入库No Read 处理");
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MessageNoReadEvent?.Invoke();
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}
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for (Int32 i = 0; i < stBcrResult.nCodeNum; i++)
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{
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bool bIsValidUTF8 = IsTextUTF8(stBcrResult.stBcrInfoEx2[i].chCode);
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if (bIsValidUTF8)
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{
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string strCode = Encoding.UTF8.GetString(stBcrResult.stBcrInfoEx2[i].chCode);
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Console.WriteLine("Get CodeNum: " + "CodeNum[" + i.ToString() + "], CodeString[" + strCode.Trim().TrimEnd('\0') + "]");
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}
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else
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{
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string strCode = Encoding.GetEncoding("GB2312").GetString(stBcrResult.stBcrInfoEx2[i].chCode);
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Console.WriteLine(DateTime.Now + ":入库扫码器==>Get CodeNum: " + "CodeNum[" + i.ToString() + "], CodeString[" + strCode.Trim().TrimEnd('\0') + "]");
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if (string.IsNullOrEmpty(SheellLastCode) || SheellLastCode != strCode.Trim().TrimEnd('\0'))
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{
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//更新扫码器存活时间
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ShellLiveTime = DateTime.Now;
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RefreshMaterialCodeStrEvent?.Invoke(strCode.Trim().TrimEnd('\0'));
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SheellLastCode = strCode.Trim().TrimEnd('\0');
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}
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if (SheellLastCode == strCode.Trim().TrimEnd('\0'))
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{
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Console.WriteLine("入库和上次扫描结果一样，不作处理");
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}
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}
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}
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MvCodeReader.MV_CODEREADER_OCR_INFO_LIST stOcrInfo = (MvCodeReader.MV_CODEREADER_OCR_INFO_LIST)Marshal.PtrToStructure(stFrameInfo.UnparsedOcrList.pstOcrList, typeof(MvCodeReader.MV_CODEREADER_OCR_INFO_LIST));
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for (int i = 0; i < stOcrInfo.nOCRAllNum; i++)
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{
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string strOcrCharCode = Encoding.UTF8.GetString(stOcrInfo.stOcrRowInfo[i].chOcr);
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Console.WriteLine("Get OcrInfo:" + "ocrNum[" + i.ToString() + "], ocrLen[" + Convert.ToString(stOcrInfo.stOcrRowInfo[i].nOcrLen) + "], ocrChar[" + strOcrCharCode.Trim().TrimEnd('\0') + "]");
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}
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}
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public static void LinerImageCallbackFunc(IntPtr pData, IntPtr pstFrameInfoEx2, IntPtr pUser)
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{
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var stFrameInfo = (MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2)Marshal.PtrToStructure(pstFrameInfoEx2, typeof(MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2));
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MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2 stBcrResult = (MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2)Marshal.PtrToStructure(stFrameInfo.UnparsedBcrList.pstCodeListEx2, typeof(MvCodeReader.MV_CODEREADER_RESULT_BCR_EX2));
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// Console.WriteLine("CodeNum[" + Convert.ToString(stBcrResult.nCodeNum) + "]");
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if (stBcrResult.nCodeNum == 0)
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{
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// 更新存活时间
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LinerLiveTime = DateTime.Now;
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Console.WriteLine("出库No Read 处理");
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MessageNoReadEvent();
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}
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for (Int32 i = 0; i < stBcrResult.nCodeNum; i++)
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{
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bool bIsValidUTF8 = IsTextUTF8(stBcrResult.stBcrInfoEx2[i].chCode);
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if (bIsValidUTF8)
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{
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string strCode = Encoding.UTF8.GetString(stBcrResult.stBcrInfoEx2[i].chCode);
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Console.WriteLine("Get CodeNum: " + "CodeNum[" + i.ToString() + "], CodeString[" + strCode.Trim().TrimEnd('\0') + "]");
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}
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else
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{
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string strCode = Encoding.GetEncoding("GB2312").GetString(stBcrResult.stBcrInfoEx2[i].chCode);
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Console.WriteLine(DateTime.Now + ":出库扫码器==>Get CodeNum: " + "CodeNum[" + i.ToString() + "], CodeString[" + strCode.Trim().TrimEnd('\0') + "]");
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if (string.IsNullOrEmpty(LinerLastCode) || LinerLastCode != strCode.Trim().TrimEnd('\0'))
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{
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// 更新存活时间
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LinerLiveTime = DateTime.Now;
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OutMaterialCodeStrEvent?.Invoke(strCode.Trim().TrimEnd('\0'));
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LinerLastCode = strCode.Trim().TrimEnd('\0');
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}
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if (LinerLastCode == strCode.Trim().TrimEnd('\0'))
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{
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Console.WriteLine("出库和上次扫描一样，不作处理");
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}
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}
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}
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MvCodeReader.MV_CODEREADER_OCR_INFO_LIST stOcrInfo = (MvCodeReader.MV_CODEREADER_OCR_INFO_LIST)Marshal.PtrToStructure(stFrameInfo.UnparsedOcrList.pstOcrList, typeof(MvCodeReader.MV_CODEREADER_OCR_INFO_LIST));
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Console.WriteLine("ocrAllNum[" + Convert.ToString(stOcrInfo.nOCRAllNum) + "]");
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for (int i = 0; i < stOcrInfo.nOCRAllNum; i++)
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{
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string strOcrCharCode = Encoding.UTF8.GetString(stOcrInfo.stOcrRowInfo[i].chOcr);
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Console.WriteLine("Get OcrInfo:" + "ocrNum[" + i.ToString() + "], ocrLen[" + Convert.ToString(stOcrInfo.stOcrRowInfo[i].nOcrLen) + "], ocrChar[" + strOcrCharCode.Trim().TrimEnd('\0') + "]");
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}
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}
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public static void Shell()
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{
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ShellLiveTime = DateTime.Now;
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MvCodeReader.cbOutputEx2delegate ImageCallback;
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MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2 stFrameInfo = new MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2();
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MvCodeReader device = new MvCodeReader();
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int nRet = MvCodeReader.MV_CODEREADER_OK;
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do
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{
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// ch:枚举设备 | en:Enum device
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MvCodeReader.MV_CODEREADER_DEVICE_INFO_LIST stDevList = new MvCodeReader.MV_CODEREADER_DEVICE_INFO_LIST();
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nRet = MvCodeReader.MV_CODEREADER_EnumDevices_NET(ref stDevList, MvCodeReader.MV_CODEREADER_GIGE_DEVICE);
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if (MvCodeReader.MV_CODEREADER_OK != nRet)
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{
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// 刷新扫码器状态
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RefreshStateEvent?.Invoke("入库",false);
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RefreshStateEvent?.Invoke("入库", false);
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Thread.Sleep(1000 * 10);
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Console.WriteLine("Enum device failed:{0:x8}", nRet);
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break;
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}
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Console.WriteLine("Enum device count : " + Convert.ToString(stDevList.nDeviceNum));
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if (0 == stDevList.nDeviceNum)
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{
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// 刷新扫码器状态
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RefreshStateEvent?.Invoke("入库", false);
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RefreshStateEvent?.Invoke("入库", false);
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Thread.Sleep(1000 * 10);
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break;
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}
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MvCodeReader.MV_CODEREADER_DEVICE_INFO stDevInfo; // 通用设备信息
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int nDevIndex = -1;
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// ch:打印设备信息 | en:Print device info
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for (Int32 i = 0; i < stDevList.nDeviceNum; i++)
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{
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stDevInfo = (MvCodeReader.MV_CODEREADER_DEVICE_INFO)Marshal.PtrToStructure(stDevList.pDeviceInfo[i], typeof(MvCodeReader.MV_CODEREADER_DEVICE_INFO));
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if (MvCodeReader.MV_CODEREADER_GIGE_DEVICE == stDevInfo.nTLayerType)
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{
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MvCodeReader.MV_CODEREADER_GIGE_DEVICE_INFO stGigEDeviceInfo = (MvCodeReader.MV_CODEREADER_GIGE_DEVICE_INFO)MvCodeReader.ByteToStruct(stDevInfo.SpecialInfo.stGigEInfo, typeof(MvCodeReader.MV_CODEREADER_GIGE_DEVICE_INFO));
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uint nIp1 = ((stGigEDeviceInfo.nCurrentIp & 0xff000000) >> 24);
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uint nIp2 = ((stGigEDeviceInfo.nCurrentIp & 0x00ff0000) >> 16);
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uint nIp3 = ((stGigEDeviceInfo.nCurrentIp & 0x0000ff00) >> 8);
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uint nIp4 = (stGigEDeviceInfo.nCurrentIp & 0x000000ff);
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// Console.WriteLine("\n" + i.ToString() + ": [GigE] User Define Name : " + stGigEDeviceInfo.chUserDefinedName);
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// Console.WriteLine("device IP :" + nIp1 + "." + nIp2 + "." + nIp3 + "." + nIp4);
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string ipStr = nIp1 + "." + nIp2 + "." + nIp3 + "." + nIp4;
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if (ipStr == ShellScannerIp)
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{
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nDevIndex = i;
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Console.WriteLine("device IP :" + ipStr);
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}
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}
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}
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if (nDevIndex < 0)
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{
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Console.WriteLine("未找到入库扫码器");
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// 刷新扫码器状态
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RefreshStateEvent?.Invoke("入库", false);
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Thread.Sleep(1000 * 30);
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break;
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}
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stDevInfo = (MvCodeReader.MV_CODEREADER_DEVICE_INFO)Marshal.PtrToStructure(stDevList.pDeviceInfo[nDevIndex], typeof(MvCodeReader.MV_CODEREADER_DEVICE_INFO));
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// ch:创建设备 | en:Create device
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nRet = device.MV_CODEREADER_CreateHandle_NET(ref stDevInfo);
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if (MvCodeReader.MV_CODEREADER_OK != nRet)
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{
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Console.WriteLine("Create device failed:{0:x8}", nRet);
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// 刷新扫码器状态
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RefreshStateEvent?.Invoke("入库", false);
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break;
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}
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// ch:打开设备 | en:Open device
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nRet = device.MV_CODEREADER_OpenDevice_NET();
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if (MvCodeReader.MV_CODEREADER_OK != nRet)
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{
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Console.WriteLine("Open device failed:{0:x8}", nRet);
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// 刷新扫码器状态
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RefreshStateEvent?.Invoke("入库", false);
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break;
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}
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// 刷新扫码器状态
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RefreshStateEvent?.Invoke("入库", true);
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// ch:注册回调函数 | en:Register image callback
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ImageCallback = new MvCodeReader.cbOutputEx2delegate(ShellImageCallbackFunc);
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nRet = device.MV_CODEREADER_RegisterImageCallBackEx2_NET(ImageCallback, IntPtr.Zero);
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if (MvCodeReader.MV_CODEREADER_OK != nRet)
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{
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Console.WriteLine("Register image callback failed!");
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// 刷新扫码器状态
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RefreshStateEvent?.Invoke("入库", false);
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break;
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}
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// ch:开启抓图 || en: start grab image
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nRet = device.MV_CODEREADER_StartGrabbing_NET();
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if (MvCodeReader.MV_CODEREADER_OK != nRet)
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{
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Console.WriteLine("Start grabbing failed:{0:x8}", nRet);
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// 刷新扫码器状态
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RefreshStateEvent?.Invoke("入库", false);
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break;
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}
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Console.WriteLine("Press enter to exit");
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Console.WriteLine(DateTime.Now.ToString());
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while (true)
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{
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Thread.Sleep(1000 * 60);
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DateTime dateTime = DateTime.Now;
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TimeSpan timeSpan = dateTime.Subtract(ShellLiveTime);
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if (timeSpan.TotalMinutes >= 10)
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{
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Console.WriteLine("入库扫码器超时");
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break;
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}
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}
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// Console.ReadLine();
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// 刷新扫码器状态
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RefreshStateEvent?.Invoke("入库", false);
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// ch:停止抓图 | en:Stop grabbing
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nRet = device.MV_CODEREADER_StopGrabbing_NET();
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if (MvCodeReader.MV_CODEREADER_OK != nRet)
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{
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Console.WriteLine("Stop grabbing failed{0:x8}", nRet);
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break;
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}
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// ch:关闭设备 | en:Close device
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nRet = device.MV_CODEREADER_CloseDevice_NET();
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if (MvCodeReader.MV_CODEREADER_OK != nRet)
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{
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Console.WriteLine("Close device failed{0:x8}", nRet);
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break;
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}
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// ch:销毁设备 | en:Destroy device
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nRet = device.MV_CODEREADER_DestroyHandle_NET();
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if (MvCodeReader.MV_CODEREADER_OK != nRet)
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{
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Console.WriteLine("Destroy device failed:{0:x8}", nRet);
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break;
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}
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} while (false);
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Thread.Sleep(1000);
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Shell();
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}
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public static void Liner()
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{
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LinerLiveTime = DateTime.Now;
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MvCodeReader.cbOutputEx2delegate ImageCallback;
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MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2 stFrameInfo = new MvCodeReader.MV_CODEREADER_IMAGE_OUT_INFO_EX2();
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MvCodeReader device = new MvCodeReader();
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int nRet = MvCodeReader.MV_CODEREADER_OK;
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do
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{
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// ch:枚举设备 | en:Enum device
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MvCodeReader.MV_CODEREADER_DEVICE_INFO_LIST stDevList = new MvCodeReader.MV_CODEREADER_DEVICE_INFO_LIST();
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nRet = MvCodeReader.MV_CODEREADER_EnumDevices_NET(ref stDevList, MvCodeReader.MV_CODEREADER_GIGE_DEVICE);
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if (MvCodeReader.MV_CODEREADER_OK != nRet)
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{
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// 刷新扫码器状态
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RefreshStateEvent?.Invoke("入库", false);
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RefreshStateEvent?.Invoke("出库", false);
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Thread.Sleep(1000 * 10);
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Console.WriteLine("Enum device failed:{0:x8}", nRet);
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break;
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}
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Console.WriteLine("Enum device count : " + Convert.ToString(stDevList.nDeviceNum));
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if (0 == stDevList.nDeviceNum)
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{
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// 刷新扫码器状态
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RefreshStateEvent?.Invoke("入库", false);
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RefreshStateEvent?.Invoke("出库", false);
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Thread.Sleep(1000 * 10);
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break;
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}
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MvCodeReader.MV_CODEREADER_DEVICE_INFO stDevInfo; // 通用设备信息
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Int32 nDevIndex = -1;
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// ch:打印设备信息 | en:Print device info
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for (Int32 i = 0; i < stDevList.nDeviceNum; i++)
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{
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stDevInfo = (MvCodeReader.MV_CODEREADER_DEVICE_INFO)Marshal.PtrToStructure(stDevList.pDeviceInfo[i], typeof(MvCodeReader.MV_CODEREADER_DEVICE_INFO));
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if (MvCodeReader.MV_CODEREADER_GIGE_DEVICE == stDevInfo.nTLayerType)
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{
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MvCodeReader.MV_CODEREADER_GIGE_DEVICE_INFO stGigEDeviceInfo = (MvCodeReader.MV_CODEREADER_GIGE_DEVICE_INFO)MvCodeReader.ByteToStruct(stDevInfo.SpecialInfo.stGigEInfo, typeof(MvCodeReader.MV_CODEREADER_GIGE_DEVICE_INFO));
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uint nIp1 = ((stGigEDeviceInfo.nCurrentIp & 0xff000000) >> 24);
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uint nIp2 = ((stGigEDeviceInfo.nCurrentIp & 0x00ff0000) >> 16);
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uint nIp3 = ((stGigEDeviceInfo.nCurrentIp & 0x0000ff00) >> 8);
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uint nIp4 = (stGigEDeviceInfo.nCurrentIp & 0x000000ff);
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// Console.WriteLine("\n" + i.ToString() + ": [GigE] User Define Name : " + stGigEDeviceInfo.chUserDefinedName);
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string ip = ((stGigEDeviceInfo.nCurrentIp & 0xff000000) >> 24) + "." + ((stGigEDeviceInfo.nCurrentIp & 0x00ff0000) >> 16) + "." + ((stGigEDeviceInfo.nCurrentIp & 0x0000ff00) >> 8) + "." + (stGigEDeviceInfo.nCurrentIp & 0x000000ff);
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string ipStr = nIp1 + "." + nIp2 + "." + nIp3 + "." + nIp4;
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if (ipStr == LinerScannerIp)
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{
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Console.WriteLine("device IP :" + ipStr);
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nDevIndex = i;
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}
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}
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}
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if (nDevIndex < 0)
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{
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Console.WriteLine("未找到出库扫码器");
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// 刷新扫码器状态
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RefreshStateEvent?.Invoke("出库", false);
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Thread.Sleep(1000 * 30);
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break;
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}
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stDevInfo = (MvCodeReader.MV_CODEREADER_DEVICE_INFO)Marshal.PtrToStructure(stDevList.pDeviceInfo[nDevIndex], typeof(MvCodeReader.MV_CODEREADER_DEVICE_INFO));
|
|
|
|
// ch:创建设备 | en:Create device
|
|
nRet = device.MV_CODEREADER_CreateHandle_NET(ref stDevInfo);
|
|
if (MvCodeReader.MV_CODEREADER_OK != nRet)
|
|
{
|
|
Console.WriteLine("Create device failed:{0:x8}", nRet);
|
|
break;
|
|
}
|
|
|
|
// ch:打开设备 | en:Open device
|
|
nRet = device.MV_CODEREADER_OpenDevice_NET();
|
|
if (MvCodeReader.MV_CODEREADER_OK != nRet)
|
|
{
|
|
Console.WriteLine("Open device failed:{0:x8}", nRet);
|
|
// 刷新扫码器状态
|
|
RefreshStateEvent?.Invoke("出库", false);
|
|
break;
|
|
}
|
|
// 刷新扫码器状态
|
|
RefreshStateEvent?.Invoke("出库", true);
|
|
|
|
// ch:注册回调函数 | en:Register image callback
|
|
ImageCallback = new MvCodeReader.cbOutputEx2delegate(LinerImageCallbackFunc);
|
|
nRet = device.MV_CODEREADER_RegisterImageCallBackEx2_NET(ImageCallback, IntPtr.Zero);
|
|
if (MvCodeReader.MV_CODEREADER_OK != nRet)
|
|
{
|
|
Console.WriteLine("Register image callback failed!");
|
|
break;
|
|
}
|
|
|
|
// ch:开启抓图 || en: start grab image
|
|
nRet = device.MV_CODEREADER_StartGrabbing_NET();
|
|
if (MvCodeReader.MV_CODEREADER_OK != nRet)
|
|
{
|
|
Console.WriteLine("Start grabbing failed:{0:x8}", nRet);
|
|
break;
|
|
}
|
|
|
|
Console.WriteLine("Press enter to exit");
|
|
Console.WriteLine(DateTime.Now.ToString());
|
|
while (true)
|
|
{
|
|
Thread.Sleep(1000 * 60);
|
|
DateTime dateTime = DateTime.Now;
|
|
TimeSpan timeSpan = dateTime.Subtract(LinerLiveTime);
|
|
if (timeSpan.TotalMinutes >= 10)
|
|
{
|
|
Console.WriteLine("出库扫码器超时");
|
|
//CloseShell();
|
|
//Shell();
|
|
break;
|
|
}
|
|
|
|
}
|
|
//Console.ReadLine();
|
|
|
|
// ch:停止抓图 | en:Stop grabbing
|
|
nRet = device.MV_CODEREADER_StopGrabbing_NET();
|
|
if (MvCodeReader.MV_CODEREADER_OK != nRet)
|
|
{
|
|
Console.WriteLine("Stop grabbing failed{0:x8}", nRet);
|
|
break;
|
|
}
|
|
|
|
// ch:关闭设备 | en:Close device
|
|
nRet = device.MV_CODEREADER_CloseDevice_NET();
|
|
if (MvCodeReader.MV_CODEREADER_OK != nRet)
|
|
{
|
|
Console.WriteLine("Close device failed{0:x8}", nRet);
|
|
break;
|
|
}
|
|
|
|
// ch:销毁设备 | en:Destroy device
|
|
nRet = device.MV_CODEREADER_DestroyHandle_NET();
|
|
if (MvCodeReader.MV_CODEREADER_OK != nRet)
|
|
{
|
|
Console.WriteLine("Destroy device failed:{0:x8}", nRet);
|
|
break;
|
|
}
|
|
|
|
} while (false);
|
|
|
|
if (MvCodeReader.MV_CODEREADER_OK != nRet)
|
|
{
|
|
// ch:销毁设备 | en:Destroy device
|
|
nRet = device.MV_CODEREADER_DestroyHandle_NET();
|
|
if (MvCodeReader.MV_CODEREADER_OK != nRet)
|
|
{
|
|
Console.WriteLine("Destroy device failed:{0:x8}", nRet);
|
|
}
|
|
}
|
|
Thread.Sleep(1000);
|
|
Liner();
|
|
|
|
}
|
|
|
|
|
|
|
|
#region 判断字符编码
|
|
/// <summary>
|
|
/// 判断字符编码
|
|
/// </summary>
|
|
/// <param name="inputStream"></param>
|
|
/// <returns></returns>
|
|
public static bool IsTextUTF8(byte[] inputStream)
|
|
{
|
|
int encodingBytesCount = 0;
|
|
bool allTextsAreASCIIChars = true;
|
|
|
|
for (int i = 0; i < inputStream.Length; i++)
|
|
{
|
|
byte current = inputStream[i];
|
|
|
|
if ((current & 0x80) == 0x80)
|
|
{
|
|
allTextsAreASCIIChars = false;
|
|
}
|
|
// First byte
|
|
if (encodingBytesCount == 0)
|
|
{
|
|
if ((current & 0x80) == 0)
|
|
{
|
|
// ASCII chars, from 0x00-0x7F
|
|
continue;
|
|
}
|
|
|
|
if ((current & 0xC0) == 0xC0)
|
|
{
|
|
encodingBytesCount = 1;
|
|
current <<= 2;
|
|
|
|
// More than two bytes used to encoding a unicode char.
|
|
// Calculate the real length.
|
|
while ((current & 0x80) == 0x80)
|
|
{
|
|
current <<= 1;
|
|
encodingBytesCount++;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Invalid bits structure for UTF8 encoding rule.
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Following bytes, must start with 10.
|
|
if ((current & 0xC0) == 0x80)
|
|
{
|
|
encodingBytesCount--;
|
|
}
|
|
else
|
|
{
|
|
// Invalid bits structure for UTF8 encoding rule.
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
if (encodingBytesCount != 0)
|
|
{
|
|
// Invalid bits structure for UTF8 encoding rule.
|
|
// Wrong following bytes count.
|
|
return false;
|
|
}
|
|
// Although UTF8 supports encoding for ASCII chars, we regard as a input stream, whose contents are all ASCII as default encoding.
|
|
return !allTextsAreASCIIChars;
|
|
}
|
|
|
|
#endregion
|
|
|
|
|
|
|
|
}
|
|
}
|
|
|
|
|
|
|
|
|
|
|