SqlString1 = "select id from RentDocs where IsReady='1' and isnull(ServerId,0)<>'0' and DogovorImage is null";
            comm1 = new SqlCommand(SqlString1, oleConnection);
            myDr1 = comm1.ExecuteReader();
            while (myDr1.Read())
            {
                try
                {
                    id1 = Convert.ToInt64(myDr1["id"].ToString());
                }
                catch (Exception xx)
                {
                    id1 = 0;
                }

                SqlString2 = "select ServerId from RentDocs where id='" + id1.ToString() + "' ";
                comm2 = null;
                comm2 = new SqlCommand(SqlString2, oleConnection);
                myDr2 = comm2.ExecuteReader();
                myDr2.Read();
                . . . 
            }