private void buttonEdit_Click(object sender, EventArgs e)
{
if (listViewStudent.SelectedItems.Count == 1)
{
StudentSet student = listViewStudent.SelectedItems[0].Tag as StudentSet;
student.idGroup = Convert.ToInt32(comboBoxGroup.SelectedItem.ToString().Split('.')[0]);
student.FirstName = textBoxFirstName.Text;
student.LastName = textBoxLastName.Text;
Program.dean.SaveChanges();
ShowStudent();
}
}
private void buttonAdd_Click(object sender, EventArgs e)
{
if (comboBoxGroup.SelectedItem != null && textBoxFirstName.Text != "" && textBoxLastName.Text != "")
{
StudentSet student = new StudentSet();
student.idGroup = Convert.ToInt32(comboBoxGroup.SelectedItem.ToString().Split('.')[0]);
student.FirstName = textBoxFirstName.Text;
student.LastName = textBoxLastName.Text;
Program.dean.StudentSet.Add(student);
Program.dean.SaveChanges();
ShowStudent();
}
}
private void listViewStudent_SelectedIndexChanged(object sender, EventArgs e)
{
if (listViewStudent.SelectedItems.Count == 1)
{
StudentSet student = listViewStudent.SelectedItems[0].Tag as StudentSet;
comboBoxGroup.SelectedIndex = comboBoxGroup.FindString(student.idGroup.ToString());
textBoxFirstName.Text = student.FirstName;
textBoxLastName.Text = student.LastName;
}
else
{
comboBoxGroup.SelectedItem = null;
textBoxFirstName.Text = "";
textBoxLastName.Text = "";
}
}
private void buttonDel_Click(object sender, EventArgs e)
{
try
{
if (listViewStudent.SelectedItems.Count == 1)
{
StudentSet student = listViewStudent.SelectedItems[0].Tag as StudentSet;
Program.dean.StudentSet.Remove(student);
Program.dean.SaveChanges();
ShowStudent();
}
comboBoxGroup.SelectedItem = null;
textBoxFirstName.Text = "";
textBoxLastName.Text = "";
}
catch
{
MessageBox.Show("Невозможно удалить, эта запись используется", "Ошибка", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}