/// <summary> /// 让指纹仪停下来 /// </summary> public static void StopFingerprint() { IsRollCalling = false; HdFingerprintHelper.FpCloseUsb(FingerPrintHandle); }
/// <summary> /// 初始化指纹仪 向指纹仪中下载指纹数据 /// </summary> /// <param name="studentList"></param> /// <param name="updateProgress"></param> /// <param name="showConfirmBox"></param> /// <param name="closeProgressBar"></param> public static void InitFingerprint(ref List <Student> studentList, UpdateProgressBarDelegate updateProgress, ShowConfirmBoxDelegate showConfirmBox, CloseProgressBarDelegate closeProgressBar) { Thread.Sleep(1000); // 等待进度条窗口创建完毕 var fingerprintPtr = HdFingerprintHelper.FpOpenUsb(0xFFFFFFFF, 1000); // 打开指纹仪驱动 while (fingerprintPtr == IntPtr.Zero) { var confirmResault = showConfirmBox("指纹仪初始化失败 \n是否重新初始化指纹仪?"); if (confirmResault == DialogResult.OK) { fingerprintPtr = HdFingerprintHelper.FpOpenUsb(0xFFFFFFFF, 1000); } else { closeProgressBar(); return; } } HdFingerprintHelper.FpEmpty(fingerprintPtr, 5000); //清空指纹仪 ushort fingerprintId = 0; // 指纹Id var total = studentList.Count; // 获取学生总数 foreach (var student in studentList) { if (string.IsNullOrEmpty(student.FingerprintString)) { continue; } fingerprintId++; var operationResault = HdFingerprintHelper.Download1Fingerprint(fingerprintPtr, student.FingerprintString, fingerprintId, 1000); // 初始化一个指纹. updateProgress(1, string.Format("正在初始化 第{0}个指纹,\n共{1}个\n该学生的姓名为:{2}", fingerprintId, total, student.StudentName)); if (operationResault != 0) { var confirmResault = showConfirmBox(string.Format("有一条指纹初始化失败 错误代码:{0}\n该指纹对应的学生学号为:{1}\n学生姓名为:{2}\n是否继续初始化指纹仪?" , operationResault, student.StudentId, student.StudentName)); if (confirmResault == DialogResult.Cancel) { closeProgressBar(); return; } //和上面初始化指纹仪的过程是一样的 fingerprintPtr = HdFingerprintHelper.FpOpenUsb(0xFFFFFFFF, 1000); // 打开指纹仪驱动 while (fingerprintPtr == IntPtr.Zero) { confirmResault = showConfirmBox("指纹仪初始化失败 \n是否重新初始化指纹仪?"); if (confirmResault == DialogResult.OK) { fingerprintPtr = HdFingerprintHelper.FpOpenUsb(0xFFFFFFFF, 1000); } else { closeProgressBar(); return; } } //结束. 这块操作可以封装成一个函数 } student.FingerprintId = fingerprintId; // 将指纹编号放到StudentList中. } closeProgressBar(); HdFingerprintHelper.FpCloseUsb(fingerprintPtr); // 初始化完毕之后关闭指纹仪 等需要签到的时候再打开指纹仪.. }