public bool UpdatePass(Entities.tbldangnhap nm)
        {
            bool   kt  = false;
            string sql = "Prd_Updatepass";

            try
            {
                con             = ds.getConnect();
                cmd             = new SqlCommand(sql, con);
                cmd.CommandType = CommandType.StoredProcedure;
                con.Open();
                cmd.Parameters.Add("@MaNV", SqlDbType.NVarChar).Value   = nm.MaNV1;
                cmd.Parameters.Add("@PassNV", SqlDbType.NVarChar).Value = nm.Pass1;
                cmd.ExecuteNonQuery();
                kt = true;
            }
            catch (Exception)
            {
            }
            finally
            {
                cmd.Dispose();
                con.Close();
            }
            return(kt);
        }
 /////dang nhap/////
 public bool dangnhap(Entities.tbldangnhap dn)
 {
     return(dal.login(dn));
 }
 /////////////
 public bool UpdatePass(Entities.tbldangnhap nm)
 {
     return(dal.UpdatePass(nm));
 }