private void buttonAdd_Click(object sender, EventArgs e)
{
Predm subjectsSet = new Predm();
subjectsSet.Name = textBoxN.Text;
Program.sss.Predm.Add(subjectsSet);
Program.sss.SaveChanges();
ShowSubjects();
}
private void listViewSub_SelectedIndexChanged(object sender, EventArgs e)
{
if (listViewSub.SelectedItems.Count == 1)
{
Predm subjectsSet = listViewSub.SelectedItems[0].Tag as Predm;
textBoxN.Text = subjectsSet.Name;
}
else
{
textBoxN.Text = "";
}
}
private void buttonDel_Click(object sender, EventArgs e)
{
try
{
if (listViewSub.SelectedItems.Count == 1)
{
Predm subjectsSet = listViewSub.SelectedItems[0].Tag as Predm;
Program.sss.Predm.Remove(subjectsSet);
Program.sss.SaveChanges();
ShowSubjects();
}
textBoxN.Text = "";
}
catch
{
MessageBox.Show("Невозможно удалить, эта запись используется", "Ошибка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}