执行多条SQL语句，实现数据库事务。

/**//// <summary>
        /// 执行多条SQL语句，实现数据库事务。
        /// </summary>
        /// <param name="SQLStringList">SQL语句的哈希表（key为sql语句，value是该语句的SqlParameter[]）</param>
        public  void ExecuteSqlTran(Hashtable SQLStringList)
        {            
            using (SqlConnection conn=new SqlConnection(this.ConnectionString))
            {
                conn.Open();
                using (SqlTransaction trans = conn.BeginTransaction()) 
                {
                    
                    try 
                    {
                        //循环
                        foreach (DictionaryEntry myDE in SQLStringList)
                        {    
                            SqlCommand cmd = new SqlCommand();
                            string[] tmp = myDE.Key.ToString ().Split(new char[] { '|' });
                            string     cmdText=tmp[1];
                            SqlParameter[] cmdParms=(SqlParameter[])myDE.Value;
                            PrepareCommand(cmd,conn,trans,cmdText, cmdParms);
                            int val = cmd.ExecuteNonQuery();
                            cmd.Parameters.Clear();

                            
                        }
                        trans.Commit();
                    }
                    catch
                    {                    
                        trans.Rollback();
                        throw;
                    }
                }                
            }
        }