public static void StartRollCall(List <Student> studentList, UpdateUserInterfaceDelegate updateUserInterfaceDelegate)
{
waitForm = new WaitForm("正在初始化指纹仪");
IsRollCalling = true;
var fingerprintEnrollThread = new Thread(() => Enroll(studentList, updateUserInterfaceDelegate));
fingerprintEnrollThread.Start();
}
/// <summary>
/// 一个大循环 用来操作指纹仪.
/// 这个函数要放到一个线程里来执行
/// </summary>
/// <param name="studentList"></param>
/// <param name="updateUserInterfaceDelegate">用来操作UI的委托</param>
public static void Enroll(List <Student> studentList, UpdateUserInterfaceDelegate updateUserInterfaceDelegate)
{
FingerPrintHandle = HdFingerprintHelper.FpOpenUsb(0xFFFFFFFF, 1000); // 打开指纹仪驱动
//while (FingerPrintHandle == 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) {
// FingerPrintHandle = HdFingerprintHelper.FpOpenUsb ( 0xFFFFFFFF, 1000 );
// } else {
// ShowMsgBox ( "当前指纹仪无法工作,请使用手动考勤." );
// return;
// }
//}
//如果打不开 就只能手动签到了
//上面的这些已经注释了. 因为在switch那边有对错误的处理.
var acceptPlayer = new SoundPlayer(Resources.Accept);
var rejectPlayer = new SoundPlayer(Resources.Reject);
var fingerprintImagePath = GlobalParams.RootDir + "/fingerprint.bmp";
while (IsRollCalling)
{
UInt16 fingerprintid = 1000;
UInt16 similarity = 0;
var fingerPrintStat = HdFingerprintHelper.StartVerify(FingerPrintHandle, fingerprintImagePath, ref fingerprintid, ref similarity,
3000);
if (!IsRollCalling)
{
return; // 如果结束点名了 这个函数直接返回即可
}
switch (fingerPrintStat)
{
case 0: {
acceptPlayer.Play();
var index = studentList.FindIndex(s => s.FingerprintId == fingerprintid);
if (index == -1)
{
continue;
}
var student = studentList[index];
student.SignIn(DateTime.Now);
//var fingerprintImage = new File(GlobalParams.RootDir+@"/fingerprint.bmp")
var fileInfo = new FileInfo(fingerprintImagePath);
Image fingerprintImage;
if (fileInfo.Length != 0)
{
var stream = File.Open(fingerprintImagePath, FileMode.Open);
fingerprintImage = Image.FromStream(stream);
stream.Close();
}
else
{
fingerprintImage = null;
}
var normalStudentNum = CountNormalStudent(studentList);
var absentStudentNum = CountAbsentStudent(studentList);
var lateStudentNum = CountLateStudent(studentList);
var askForLeaveStudentNum = CountAskForLeaveStudent(studentList);
var leaveEarlyStudentNum = CountLeaveEarlyStudent(studentList);
var expectedStudentNum = studentList.Count;
var course = new CourseInfo(expectedStudentNum: expectedStudentNum, didNotSubmitStudentNum:
absentStudentNum, actualStudentNum: normalStudentNum,
askForLeaveStudentNum: askForLeaveStudentNum);
updateUserInterfaceDelegate(fingerprintImage, course, student);
CopyOfStudentList = studentList;
break;
}
case 9: {
//这里会出现文件占用的问题. 文件->流->图片
var fileInfo = new FileInfo(fingerprintImagePath);
Image fingerprintImage;
if (fileInfo.Length != 0)
{
var stream = File.Open(fingerprintImagePath, FileMode.Open);
fingerprintImage = Image.FromStream(stream);
stream.Close();
}
else
{
fingerprintImage = null;
}
updateUserInterfaceDelegate(fingerprintImage, null);
rejectPlayer.Play();
break;
}
default: {
var confirmResault = ConfirmBox.ShowConfirmBoxDialog(string.Format("指纹仪故障 故障代码:{0}\n 是否重新打开指纹仪", fingerPrintStat));
if (confirmResault == DialogResult.Cancel)
{
IsRollCalling = false;
return;
// 如果点了否 就结束指纹仪点名. 点是 重新初始化. 手动签到那里要判断一下(不用判断了 在switch的入口那边加了一个对IsrollCalling的一个判断.)
}
else
{
FingerPrintHandle = HdFingerprintHelper.FpOpenUsb(0xFFFFFFFF, 1000); // 重新初始化指纹仪
}
break;
}
}
}
}
