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()));
}
}
}