public void UpdateAnhGiaoVien(DataTable dtSinhVien, string ThuMucAnh) { Image img; byte[] Anh; foreach (DataRow dr in dtSinhVien.Rows) { if ("" + dr["FileAnh"] != "") { MemoryStream ms = new MemoryStream(); img = Image.FromFile(ThuMucAnh + dr["FileAnh"].ToString()); img.Save(ms, img.RawFormat); Anh = ms.GetBuffer(); oDNS_GiaoVien.UpdateAnhGiaoVien(Anh, int.Parse(dr["NS_GiaoVienID"].ToString())); } } }