protected void GridView1_SelectedIndexChanged(object sender, EventArgs e) { string ma = GridView1.SelectedRow.Cells[0].Text; dv = cn.GetDonViByID(ma); if (dv != null) { txtMaDonVi.Text = dv.MaDonVi; txtTenDonVi.Text = dv.TenDonVi; txtDiaChi.Text = dv.DiaChi; txtSoDienThoai.Text = dv.SoDienThoai; txtWebsite.Text = dv.Website; } }