private void Insert_Click(object sender, EventArgs e) { using (CityIEF frm = new CityIEF(null, db)) { if (frm.ShowDialog() == DialogResult.OK) { cityBindingSource.DataSource = db.City.ToList(); } } }
private void Edit_Click(object sender, EventArgs e) { if (cityBindingSource.Current == null) { return; } using (CityIEF frm = new CityIEF(cityBindingSource.Current as City, db)) { if (frm.ShowDialog() == DialogResult.OK) { cityBindingSource.DataSource = db.City.ToList(); } else { db = new my_db_for_db_2Entities(); cityBindingSource.DataSource = db.City.ToList(); } } }