private void RefreshAllInfo()
{
studentsListManager = new StudentsListManager(dbPath);
studentInfos = studentsListManager.getAllStudentsInfo();
List <string> stulentsNames = studentsListManager.getStudentsNames();
comboBoxStudentsNames.Items.Clear();
comboBoxStudentsNames.Text = "";
comboBoxStudentsNames.Items.AddRange(stulentsNames.ToArray());
//-------------------------------------------------------------
stubjectListManager = new SubjectsListManager(dbPath);
subjectInfos = stubjectListManager.getAllSubjectInfo();
List <string> subjectsNames = stubjectListManager.getSubjectsNames();
comboBoxSubjects.Items.Clear();
comboBoxSubjects.Text = "";
comboBoxSubjects.Items.AddRange(subjectsNames.ToArray());
//-------------------------------------------------------------
lessonInfos = lessonsListManager.getLessonsList();
listBox1.Items.Clear();
foreach (var lesInfo in lessonInfos)
{
string dateTime = lesInfo.DateAndTime.ToString();
string studentName = lesInfo.studentInfo.name;
string subjectName = lesInfo.subjectInfo.name;
listBox1.Items.Add(dateTime + " " + studentName + " " + subjectName + " " + lesInfo.done);
}
//-------------------------------------------------------------
dateTimePicker.Value = DateTime.Now;
numericUpDownDuration.Value = 4;
comboBoxStudentsNames.SelectedIndex = -1;
comboBoxSubjects.SelectedIndex = -1;
textBoxTopic.Text = "";
checkBoxPaid.Checked = false;
checkBoxDone.Checked = false;
numericUpDownPrice.Value = 80;
textBoxRemark.Text = "";
}
public StudentsForm(string dbPath)
{
studentsList = new StudentsListManager(dbPath);
InitializeComponent();
}
public List <LessonInfo> getLessonsList(DateTime from = new DateTime(),
DateTime to = new DateTime(),
StudentInfo studentInfo = new StudentInfo(),
SubjectInfo subjectInfo = new SubjectInfo())
{
List <LessonInfo> list = new List <LessonInfo>();
//---------------------------------------------
DateTime def = new DateTime();
if (to == def)
{
to = new DateTime(9999, to.Month, to.Day);
}
//---------------------------------------------
SQLiteCommand cmd = connection.CreateCommand();
string query = @"SELECT * FROM lessons WHERE @from <= DateAndTime and DateAndTime <= @to";
//---------------------------------------------
StudentInfo def_stud = new StudentInfo();
if (!studentInfo.Equals(def_stud))
{
query += $" and student_id = {studentInfo.id}";
}
//---------------------------------------------
SubjectInfo def_subj = new SubjectInfo();
if (!subjectInfo.Equals(def_subj))
{
query += $" and subject_id = {subjectInfo.id}";
}
//---------------------------------------------
query += ";";
//---------------------------------------------
cmd.CommandText = query;
string fromS = from.ToString(@"yyyy/MM/dd HH:mm:ss");
string toS = to.ToString(@"yyyy/MM/dd HH:mm:ss");
cmd.Parameters.AddWithValue("@from", fromS);
cmd.Parameters.AddWithValue("@to", toS);
SQLiteDataReader sqlReader = cmd.ExecuteReader();
while (sqlReader.Read())
{
LessonInfo lessonInfo = new LessonInfo();
lessonInfo.id = Convert.ToInt32(sqlReader["id"].ToString());
//-------------
string formatString = "yyyyMMddHHmmss";
string sample = sqlReader["DateAndTime"].ToString();
string[] words = sample.Split(new char[] { ' ', '.', ':' });
sample = string.Join("", words);
lessonInfo.DateAndTime = DateTime.ParseExact(sample, formatString, null);
//-------------
lessonInfo.duration = Int32.Parse(sqlReader["duration"].ToString());
//-------------
int student_id = Int32.Parse(sqlReader["student_id"].ToString());
StudentsListManager studentsListManager = new StudentsListManager(dbPath);
lessonInfo.studentInfo = studentsListManager.getStudentInfoById(student_id);
//-------------
int subject_id = Int32.Parse(sqlReader["subject_id"].ToString());
SubjectsListManager subjectsListManager = new SubjectsListManager(dbPath);
lessonInfo.subjectInfo = subjectsListManager.getSubjectInfoById(subject_id);
//-------------
lessonInfo.topic = sqlReader["topic"].ToString();
lessonInfo.done = sqlReader["done"].ToString().Equals("0") ? false : true;
lessonInfo.price = Int32.Parse(sqlReader["price"].ToString());
lessonInfo.paid = sqlReader["paid"].ToString().Equals("0") ? false : true;
lessonInfo.remark = sqlReader["remark"].ToString();
list.Add(lessonInfo);
}
return(list);
}