//вибір дії
private void comboBoxAct_SelectedIndexChanged(object sender, EventArgs e)
{
string act = comboBoxAct.SelectedItem.ToString();
switch (act)
{
case "Add test to DB":
{
OpenFileDialog file = new OpenFileDialog();
file.ShowDialog();
string xmlTest = File.ReadAllText(file.FileName);
var time = DateTime.Now;
using (ExamVceDB test = new ExamVceDB())
{
test.TestDBs.Add(new TestDB()
{
IdFromPerson = loginPerson.ID,
Test = xmlTest,
DateLoad = time,
});
test.SaveChanges();
MessageBox.Show("test was added");
}
ChangeIDForTest();
break;
}
case "Send test to":
{
break;
}
case "Add student to DB":
{
AddStudentToDB addStudent = new AddStudentToDB();
addStudent.ShowDialog();
break;
}
case "Choose exam":
{
listBoxExam.Enabled = true;
using (ExamVceDB exam = new ExamVceDB())
{
foreach (var item in exam.TestDBs)
{
MakeTest subject = DeserialiseFromString(item.Test);
listBoxExam.Items.Add($"{item.ID}* {subject.Subject}");
}
}
break;
}
}
if (comboBoxAct.SelectedItem.Equals("Add test to DB"))
{
}
}
void FillTable()
{
using (ExamVceDB pass = new ExamVceDB())
{
//var query = pass.PassExams.Join(pass.Students, c => c.Student.Name);
foreach (var item in pass.PassExams)
{
try
{
ListViewItem i = new ListViewItem(item.ID.ToString());
var studentName = pass.Students.Where(q => q.ID == item.Id_Student).ToList();
i.SubItems.Add(studentName[0].Name);
string testForm = pass.TestDBs.First(q => q.ID == item.Id_Test).Test;
MakeTest test = DeserialiseFromString(testForm);
i.SubItems.Add(test.Subject);
i.SubItems.Add(item.Date_Pass.ToString());
i.SubItems.Add(item.Mark.ToString());
listViewPassExam.Items.Add(i);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
}
}
//непотрібний вже метод був як тест
private void ChooseStartExam_Click(object sender, RoutedEventArgs e)
{
using (OpenFileDialog openFileDialog = new OpenFileDialog())
{
openFileDialog.ShowDialog();
string path = openFileDialog.FileName;
XmlSerializer serializer = new XmlSerializer(typeof(MakeTest));
StreamReader reader = new StreamReader(path);
test = (MakeTest)serializer.Deserialize(reader);
}
FillFild();
FillQuestions();
FillRadioAnswer();
mainWindow.Children.Clear();
}
//вибір типу отриманого повідомлення
void FunctionForSwich(TransferInfo info, string recive, User client)
{
switch (info.Type)
{
case MessageType.CheckLogIn:
{
User reciveUser = JsonConvert.DeserializeObject <User>(recive);
string passRecive;
using (MD5 md5Hash = MD5.Create())
{
passRecive = GetMd5Hash(md5Hash, reciveUser.Password);
}
using (ExamVceDB userLogin = new ExamVceDB())
{
var student = userLogin.Students.Where(i => i.Login == reciveUser.Login).FirstOrDefault();
char[] login = student.Login.ToCharArray();
var password = student.Password.ToCharArray();
int endPosLogin = 0;
int endPosPass = 0;
while (true)
{
if (login[endPosLogin] == ' ' || endPosLogin > student.Login.Length - 1)
{
break;
}
endPosLogin++;
}
while (true)
{
if (password[endPosPass] == ' ' || endPosPass > student.Login.Length - 1)
{
break;
}
endPosPass++;
}
string log = new string(login, 0, endPosLogin);
string pass = new string(password, 0, endPosPass);
bool isCorrectMD5 = false;
if (reciveUser.Login.Equals(log) && passRecive.Equals(pass))
{
client.ID = student.ID;
SendAnswer(student.ID.ToString(), client, MessageType.GetAnswer);
return;
}
;
SendAnswer("not correct", client, MessageType.GetAnswer);
}
break;
}
case MessageType.Test:
{
using (ExamVceDB test = new ExamVceDB())
{
try
{
if (idChooseExam < 0)
{
new Exception();
}
SendAnswer(GetTestForSendStudent(idChooseExam), client, MessageType.Test);
}
catch { SendAnswer("error xml", client, MessageType.Error); }
}
break;
}
case MessageType.CheckTestFromStudent:
{
MakeTest testFromUser = DeserialiseFromString(recive);
int mark = 0;
bool isWriteToDB = true;
using (ExamVceDB test = new ExamVceDB())
{
try
{
var result = test.TestDBs.FirstOrDefault(i => i.ID == testFromUser.IdTest);
MakeTest correctTest = DeserialiseFromString(result.Test);
for (int i = 0; i < correctTest.questions.Count; i++)
{
for (int j = 0; j < correctTest.questions[i].answers.Count; j++)
{
if (correctTest.questions[i].answers[j].IsCorrect)
{
if (testFromUser.questions[i].answers[j].IsCorrect)
{
mark += correctTest.questions[i].Weight;
}
}
}
}
//MessageBox.Show(mark.ToString());
}
catch
{
isWriteToDB = false;
MessageBox.Show("Test not foudn");
}
}
if (isWriteToDB)
{
try
{
using (ExamVceDB passExam = new ExamVceDB())
{
passExam.PassExams.Add(new PassExam()
{
Id_Sender = loginPerson.ID,
Id_Student = client.ID,
Id_Test = testFromUser.IdTest,
Mark = mark,
Date_Pass = DateTime.Now
});
passExam.SaveChanges();
MessageBox.Show("Test pass writed in DB");
}
}catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
SendAnswer($"Your mark is: {mark}", client, MessageType.SendMark);
break;
}
}
}
//отримання повідомлення
void ReceiveMessages()
{
try
{
while (true)
{
byte[] infoBytes = new byte[8];
server.Receive(infoBytes);
var info = TransferInfo.FromBytes(infoBytes);
byte[] buffer = new byte[250];
MemoryStream memoryStream = new MemoryStream();
int left = info.Size;
int count = 0;
while (left > 0)
{
int download = left < buffer.Length ? left : buffer.Length;
count = server.Receive(buffer, download, SocketFlags.None);
memoryStream.Write(buffer, 0, count);
left -= count;
}
string recive = Encoding.UTF8.GetString(memoryStream.ToArray());
switch (info.Type)
{
case MessageType.Test:
{
var serializer = new XmlSerializer(typeof(MakeTest));
//MakeTest desr;
using (TextReader reader = new StringReader(recive))
{
test = (MakeTest)serializer.Deserialize(reader);
}
Dispatcher.Invoke(() =>
{
mainWindow.Children.Clear();
FillFild();
FillRadioAnswer();
FillQuestions();
EndExamButton.IsEnabled = true;
});
break;
}
case MessageType.SendMark:
{
Dispatcher.Invoke(() => { YourMark.Text = recive; });
break;
}
case MessageType.Error:
{
System.Windows.MessageBox.Show("Uppss some error");
break;
}
}
}
}
catch (Exception ex)
{
System.Windows.MessageBox.Show(ex.Message);
System.Windows.MessageBox.Show("Connection with server is lost");
}
}
