不同数据库间事务操作（服务器也可不同）--事务回滚

 
/// <summary>

        /// 不同服务器上数据库的事务操作

        /// </summary>

        /// <param name="alCon">数据库连接字符串集</param>

        /// <param name="alSql">sql语句集，同一服务器的数据库sql语句合并为一条处理</param>

        /// <returns>返回是否执行成功1表示成功，-1表示失败</returns>

        public override int ExcuteTransactions(ArrayList alCon, ArrayList alSql)

        {

            int iFlag = 1; //用于返回是否执行成功

            ArrayList alTran = new ArrayList();

            ArrayList alCons = new ArrayList();

            try

            {

                for (int i = 0; i < alCon.Count; i++)

                {

                    SqlConnection sqlCon = new SqlConnection(alCon[i].ToString());

                    SqlCommand sqlCom = new SqlCommand();

                    sqlCom.Connection = sqlCon;

                    //打开数据库

                    sqlCon.Open();

                    //创建事务

                    SqlTransaction tranNew = sqlCon.BeginTransaction();

                    //临时保存数据，以便事务回滚

                    alCons.Add(sqlCon);

                    alTran.Add(tranNew);

                    sqlCom.Transaction = tranNew;

                    sqlCom.CommandText = alSql[i].ToString();

                    int j = sqlCom.ExecuteNonQuery();

                 

                }

                foreach (SqlTransaction tran in alTran)

                {

                    tran.Commit();

                }

            }

            catch (Exception ex)

            {

                iFlag = -1;

                //事务回滚

                foreach (SqlTransaction tran in alTran)

                {

                    tran.Rollback();

                }

            }

            finally

            {

                foreach (SqlConnection con in alCons)

                {

                    con.Close();

                }

            }

            return iFlag;

        }