public Frm_Edit(int id) { InitializeComponent(); db = new QUANLYTHUVIENEntities(); sach = db.Saches.Single(nv => nv.id == id); this.Load += Form3_Load; }
private void deleteToolStripMenuItem_Click(object sender, EventArgs e) { if (dtg_data.SelectedRows.Count == 1) { var row = dtg_data.SelectedRows[0]; var cell = row.Cells["id"]; int id = (int)cell.Value; db = new QUANLYTHUVIENEntities(); Sach sach = db.Saches.Single(nv => nv.id == id); db.Saches.Remove(sach); db.SaveChanges(); MessageBox.Show("Xóa Sách THành công"); } else { MessageBox.Show("Mời bạn chọn 1 dòng"); } LoadQLTV(); }
void LoadQLTV() { db = new QUANLYTHUVIENEntities(); dtg_data.DataSource = db.Saches.ToList(); }