private void buttonEdit_Click(object sender, EventArgs e)
{
if ((textBoxName.Text != "") &&
(textBoxTeacher.Text != "") &&
(textBoxSemester.Text != "") &&
(textBoxYear.Text != ""))
{
if (listViewLesson.SelectedItems.Count == 1)
{
LessonsSet lessonset = listViewLesson.SelectedItems[0].Tag as LessonsSet;
if (textBoxName.Text != "")
{
lessonset.Lesson = textBoxName.Text;
}
if (textBoxTeacher.Text != "")
{
lessonset.Teacher = textBoxTeacher.Text;
}
if (textBoxSemester.Text != "")
{
lessonset.Semester = Convert.ToInt32(textBoxSemester.Text);
}
if (textBoxYear.Text != "")
{
lessonset.Year = Convert.ToInt32(textBoxYear.Text);
}
Program.EduDb.SaveChanges();
ShowLessons();
}
}
else
{
MessageBox.Show("Данные не выбраны", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
}
private void buttonAdd_Click(object sender, EventArgs e)
{
try
{
LessonsSet lessonset = new LessonsSet();
if (textBoxName.Text != "")
{
lessonset.Lesson = textBoxName.Text;
}
if (textBoxTeacher.Text != "")
{
lessonset.Teacher = textBoxTeacher.Text;
}
if (textBoxSemester.Text != "")
{
lessonset.Semester = Convert.ToInt32(textBoxSemester.Text);
}
if (textBoxYear.Text != "")
{
lessonset.Year = Convert.ToInt32(textBoxYear.Text);
}
Program.EduDb.LessonsSet.Add(lessonset);
Program.EduDb.SaveChanges();
}
catch
{
{ MessageBox.Show("Данные не выбраны", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error); }
}
ShowLessons();
}
private void listViewLesson_SelectedIndexChanged(object sender, EventArgs e)
{
if (listViewLesson.SelectedItems.Count == 1)
{
LessonsSet lessonset = listViewLesson.SelectedItems[0].Tag as LessonsSet;
textBoxName.Text = lessonset.Lesson;
textBoxTeacher.Text = lessonset.Teacher;
textBoxSemester.Text = lessonset.Semester.ToString();
textBoxYear.Text = lessonset.Year.ToString();
}
else
{
textBoxName.Text = "";
textBoxTeacher.Text = "";
textBoxSemester.Text = "";
textBoxYear.Text = "";
}
}
private void buttonDel_Click(object sender, EventArgs e)
{
try
{
if (listViewLesson.SelectedItems.Count == 1)
{
LessonsSet lessonset = listViewLesson.SelectedItems[0].Tag as LessonsSet;
Program.EduDb.LessonsSet.Remove(lessonset);
Program.EduDb.SaveChanges();
ShowLessons();
}
textBoxName.Text = "";
textBoxTeacher.Text = "";
textBoxSemester.Text = "";
textBoxYear.Text = "";
}
catch
{
MessageBox.Show("Невозможно удалить, эта запись используется", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}