private void btneditsave_Click(object sender, EventArgs e) { var db = new K22T_CSEntities(); Class newClass = db.Classes.Find(@class.id); try { newClass.Name = this.tbEdit.Text; db.Entry(newClass).State = System.Data.Entity.EntityState.Modified; db.SaveChanges();// Do-it }catch (Exception ex) { MessageBox.Show(ex.Message); } this.Close(); }
private void btnSave_Click(object sender, EventArgs e) { Class @class = new Class(); @class.Name = tbClassname.Text; try { var db = new K22T_CSEntities(); db.Classes.Add(@class); db.SaveChanges(); // Do it } catch (Exception ex) { MessageBox.Show(ex.Message); } this.Close(); }
private void btnDelete_Click(object sender, EventArgs e) { var db = new K22T_CSEntities(); for (int i = 0; i < this.lstClass.SelectedRows.Count; i++) { var row = this.lstClass.SelectedRows[i]; var item = (Class)row.DataBoundItem; try { var @class = db.Classes.Find(item.id); db.Classes.Remove(@class); db.SaveChanges(); } catch (Exception ex) { MessageBox.Show(ex.Message); } } }
private void ShowClassList() { var db = new K22T_CSEntities(); this.lstClass.DataSource = db.Classes.ToList(); }