分页存储过程及.NET代码

/*    author:修改schema,原作tag    description:通用分页存储过程    date:2006/09/22*/ALTER PROCEDURE dbo.SPY_Page@tblName varchar(255),                 -- 表名@strGetFields varchar(1000),           -- 需要返回的列 @fldName varchar(255),                 -- 排序的字段名@PageSize int,                         -- 页尺寸@PageIndex int,                        -- 页码@doCount bit,                          -- 返回记录总数, 非 0 值则返回, 查询表的记录总数@OrderType bit,                        -- 设置排序类型, 非 0 值则降序@strWhere varchar(1500)                -- 查询条件 (注意: 不要加 where)ASdeclare @strSQL varchar(5000)  -- 主语句declare @strTmp varchar(110)   -- 临时变量declare @strOrder varchar(400) -- 排序类型if @doCount != 0    begin         if @strWhere !='SCHEMA'            set @strSQL = 'select count(*) as Total from [' + @tblName + '] where '+@strWhere    else        set @strSQL = 'select count(*) as Total from [' + @tblName + ']'    end     --以上代码的意思是如果@doCount传递过来的不是0，就执行总数统计。以下的所有代码都是@doCount为0的情况：else    begin        if @OrderType != 0            begin                set @strTmp = '<(select min'                set @strOrder = ' order by [' + @fldName + '] desc'                --如果@OrderType不是0，就执行降序，这句很重要！            end        else            begin                set @strTmp = '>(select max'                set @strOrder = ' order by [' + @fldName + '] asc'            end    if @PageIndex = 1        begin            if @strWhere != 'SCHEMA'                 set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from [' + @tblName + '] where ' + @strWhere + ' ' + @strOrder        else                set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from ['+ @tblName + '] '+ @strOrder                --如果是第一页就执行以上代码，这样会加快执行速度        end    else        begin        --以下代码赋予了@strSQL以真正执行的SQL代码　            set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from ['+ @tblName + '] where [' + @fldName + ']' + @strTmp + '(['+ @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['+ @fldName + '] from [' + @tblName + ']' + @strOrder + ') as tblTmp)'+ @strOrder            if @strWhere != 'SCHEMA'            set @strSQL = 'select top ' + str(@PageSize) +' '+@strGetFields+ ' from ['+ @tblName + '] where [' + @fldName + ']' + @strTmp + '(['+ @fldName + ']) from (select top ' + str((@PageIndex-1)*@PageSize) + ' ['+ @fldName + '] from [' + @tblName + '] where ' + @strWhere + ' '+ @strOrder + ') as tblTmp) and ' + @strWhere + ' ' + @strOrder        end    end exec(@strSQL)RETURN

.NET代码

private const String m_tableName = "EnterpriseList";    //表名        private const String m_getFields = "*";       //获取的字段        private const String m_orderField = "AddDate";//默认排序字段        private const Boolean m_doCount = false;      //不统计总记录数        private const Boolean m_orderType = true;    //降序        private const String m_strWhere = "SCHEMA"; #region SPY_EnterpriseList_get_bysql        /// 
        /// 根据条件来访列表,分页        ///         /// 每页记录数        /// 页索引        /// 条件语句        /// 返回eventdirOR的集合        public List SPY_EnterpriseList_get_bysql(Int32 pageSize, Int32 pageIndex, String strWhere)        {            IDataReader dr = null;            try            {                Database db = DatabaseFactory.CreateDatabase();                Object[] paras = sql.getSqlParaToPage(m_tableName, m_getFields, m_orderField, pageSize, pageIndex, m_doCount, m_orderType, strWhere);                dr = db.ExecuteReader("SPY_Page", paras);                List obj = new List();                while (dr.Read())                {                    obj.Add(new EnterpriseList(dr));                }                return obj;            }            catch (Exception ex)            {                throw new Exception(ex.Message);            }            finally            {                #region finally                if (dr != null)                    dr.Dispose();                #endregion            }        }        #endregion        #region SPY_EnterpriseList_get_bysqlTocount        /// 
        /// 根据条件来访列表,返回记录个数        ///         /// 每页记录数        /// 页索引        /// 条件语句        /// 返回整形值        public Int32 SPY_EnterpriseList_get_bysqlTocount(Int32 pageSize, Int32 pageIndex, String strWhere)        {            IDataReader dr = null;            try            {                Database db = DatabaseFactory.CreateDatabase();                //参数中的true表示统计总个数                Object[] paras = sql.getSqlParaToPage(m_tableName, m_getFields, m_orderField, pageSize, pageIndex, true, m_orderType, strWhere);                dr = db.ExecuteReader("SPY_Page", paras);                while (dr.Read())                {                    //返回记录总个数                    return Convert.ToInt32(dr["Total"]);                }                return 0;            }            catch (Exception ex)            {                throw new Exception(ex.Message);            }            finally            {                #region finally                if (dr != null)                    dr.Dispose();                #endregion            }        }        #endregion