private void btnThem_Click(object sender, EventArgs e)
{
FrLstLoaiSachEdit frm = new FrLstLoaiSachEdit();
frm.Tag = ""; //Tín hiệu cho biết thêm mới
frm.ShowDialog();
hienthi(GrLoaiSach);
}
private void btnSua_Click(object sender, EventArgs e)
{
FrLstLoaiSachEdit fr = new FrLstLoaiSachEdit();
fr = new FrLstLoaiSachEdit();
fr.Tag = this.GrLoaiSach.CurrentRow.Cells["Ma_LoaiSach"].Value.ToString(); //Tín hiệu sửa
fr.txtMaLoaiSach.Text = this.GrLoaiSach.CurrentRow.Cells["Ma_LoaiSach"].Value.ToString();
fr.txtTenMaLoaiSach.Text = this.GrLoaiSach.CurrentRow.Cells["Ten_LoaiSach"].Value.ToString();
fr.ShowDialog();
hienthi(GrLoaiSach);
}