private void buttonAdd_Click(object sender, EventArgs e)
{
SubjectsSet subjectsSet = new SubjectsSet();
subjectsSet.Name = textBoxName.Text;
Program.school.SubjectsSet.Add(subjectsSet);
Program.school.SaveChanges();
ShowSubject();
}
private void buttonEdit_Click(object sender, EventArgs e)
{
if (listViewSubjects.SelectedItems.Count == 1)
{
SubjectsSet subjectsSet = listViewSubjects.SelectedItems[0].Tag as SubjectsSet;
subjectsSet.Name = textBoxName.Text;
Program.school.SaveChanges();
ShowSubject();
}
}
private void listViewSubjects_SelectedIndexChanged(object sender, EventArgs e)
{
if (listViewSubjects.SelectedItems.Count == 1)
{
SubjectsSet subjectsSet = listViewSubjects.SelectedItems[0].Tag as SubjectsSet;
textBoxName.Text = subjectsSet.Name;
}
else
{
textBoxName.Text = "";
}
}
private void buttonDel_Click(object sender, EventArgs e)
{
try
{
if (listViewSubjects.SelectedItems.Count == 1)
{
SubjectsSet subjectsSet = listViewSubjects.SelectedItems[0].Tag as SubjectsSet;
Program.school.SubjectsSet.Remove(subjectsSet);
Program.school.SaveChanges();
}
textBoxName.Text = "";
ShowSubject();
}
catch
{
MessageBox.Show("Невозможно удалить, эта запись используется!", "Ошибка!", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}