private void listViewLessons_SelectedIndexChanged(object sender, EventArgs e)
{
if (listViewLessons.SelectedItems.Count == 1)
{
Lessons lessons = listViewLessons.SelectedItems[0].Tag as Lessons;
comboBoxTeachers.SelectedIndex = comboBoxTeachers.FindString(lessons.IdTeachers.ToString());
textBoxName.Text = lessons.Name;
}
else
{
comboBoxTeachers.SelectedItem = null;
textBoxName.Text = "";
}
}
private void buttonAdd_Click(object sender, EventArgs e)
{
if (comboBoxTeachers.SelectedItem != null && textBoxName.Text != "")
{
Lessons lessons = new Lessons();
lessons.IdTeachers = Convert.ToInt32(comboBoxTeachers.SelectedItem.ToString().Split('.')[0]);
lessons.Name = textBoxName.Text;
Program.School.Lessons.Add(lessons);
Program.School.SaveChanges();
ShowLessons();
}
else
{
MessageBox.Show("Данные не выбраны", "Ошибка", MessageBoxButtons.OK,
MessageBoxIcon.Information);
}
}
private void buttonDel_Click(object sender, EventArgs e)
{
try
{
if (listViewLessons.SelectedItems.Count == 1)
{
Lessons lessons = listViewLessons.SelectedItems[0].Tag as Lessons;
Program.School.Lessons.Remove(lessons);
Program.School.SaveChanges();
ShowLessons();
}
comboBoxTeachers.SelectedItem = null;
textBoxName.Text = "";
}
catch
{
MessageBox.Show("Невозможно удалить, эта запись используется",
"Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
