private void btn_Add_Click(object sender, EventArgs e)
{
teachers teacher = new teachers();
teacher.Surname = tb_surname.Text;
teacher.Name = tb_name.Text;
teacher.patronymic = tb_patronymic.Text;
teacher.iditems = cb_item.Text;
Program.school.teachers.Add(teacher);
Program.school.SaveChanges();
ShowTeachercs();
}
private void btn_Del_Click(object sender, EventArgs e)
{
if (ListViewTeachers.SelectedItems.Count == 1)
{
teachers teacher = ListViewTeachers.SelectedItems[0].Tag as teachers;
teacher.Surname = tb_surname.Text;
teacher.Name = tb_name.Text;
teacher.patronymic = tb_patronymic.Text;
teacher.iditems = cb_item.Text;
Program.school.SaveChanges();
ShowTeachercs();
}
}
private void btn_Edit_Click(object sender, EventArgs e)
{
try
{
if (ListViewTeachers.SelectedItems.Count == 1)
{
teachers teacher = ListViewTeachers.SelectedItems[0].Tag as teachers;
Program.school.teachers.Remove(teacher);
Program.school.SaveChanges();
}
tb_surname.Text = "";
tb_name.Text = "";
tb_patronymic.Text = "";
cb_item.Text = "";
}
catch
{
MessageBox.Show("Невозможно удалить запись");
}
ShowTeachercs();
}