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();
}