ASP.NET + SQL 分页存储过程以及对应的类??????????? }??????????? SqlParameter[] parameters {???????
ASP.NET + SQL 分页存储过程以及对应的类
??????????? }
??????????? SqlParameter[] parameters = {
??????????????????? new SqlParameter("@TableName", SqlDbType.VarChar, 255), //--表名?????????
??????????????????? new SqlParameter("@FieldList", SqlDbType.VarChar, 255), //--显示列名，如果是全部字段则为*? --[至少要传个*进来]?????????
??????????????????? new SqlParameter("@PrimaryKey", SqlDbType.VarChar, 255),//--单一主键或唯一值键
??????????????????? new SqlParameter("@Where", SqlDbType.VarChar,1000),// --查询条件 不含'where'字符，如id>10 and len(userid)>9????
??????????????????? new SqlParameter("@Order", SqlDbType.VarChar,255),//--排序 不含'order by'字符，如id asc,userid desc，必须指定asc或desc 也可以不指定排序字段直接传null 或者 ''? 进来
????????????????????????????????????????????????????????????????????? //--注意当@SortType=3时生效，记住一定要在最后加上主键，否则会让你比较郁闷??
??????????????????? new SqlParameter("@SortType", SqlDbType.Int),?? //--排序规则 1:正序asc 2:倒序desc 3:多列排序方法[多列排序,必须给@Order 赋值,其他两种排序的倒无所谓]
??????????????????? new SqlParameter("@RecorderCount", SqlDbType.Int),// --记录总数 0:会返回总记录
??????????????????? new SqlParameter("@PageSize", SqlDbType.Int),// --每页输出的记录数????
??????????????????? new SqlParameter("@PageIndex", SqlDbType.Int),// --当前页数??
??????????????????? new SqlParameter("@TotalCount", SqlDbType.Int),//--记返回总记录
??????????????????? new SqlParameter("@TotalPageCount", SqlDbType.Int),//--返回总页数
??????????????????????????????????????? };
??????????? parameters[0].Value = TableName;
??????????? parameters[1].Value = FieldShow;
??????????? parameters[2].Value = PrimaryKey;
??????????? parameters[3].Value = strWhere;
??????????? parameters[4].Value = strOrder;
??????????? parameters[5].Value = (int)sortType;
??????????? parameters[6].Value = 0;
??????????? parameters[7].Value = PageSize;
??????????? parameters[8].Value = PageIndex;
??????????? parameters[9].Direction = ParameterDirection.Output;
??????????? parameters[10].Direction = ParameterDirection.Output;
??????????? DataSet ds = DbHelperSQL.RunProcedure("SP_ViewPage", parameters, "ds");//这个是执行存储过程的方法
??????????? TotalCount = (int)parameters[9].Value;
??????????? TotalPageCount = (int)parameters[10].Value;
??????????? return ds;
??????? }
??????? /// <summary>
??????? /// 主要用在JQuery页面初始化获取数据记录条数有多少页
??????? /// </summary>
??????? /// <param name="tbname">表的名称,也可以在后面跟? where + 条件...</param>
??????? /// <param name="pagesize">每页的记录数量.</param>
??????? /// <returns>返回页面数量</returns>
??????? public static int GetPageCount(string tbname, int PageSize)
??????? {
??????????? string str = " select count(*) from " + tbname + " ";
??????????? int RecordCount = (int)DbHelperSQL.GetSingle(str);
??????????? if (RecordCount == 0 || PageSize == 0)
??????????????? return 0;
??????????? if (RecordCount % PageSize != 0)
??????????? {
??????????????? return RecordCount / PageSize + 1;
??????????? }
??????????? else
??????????? {
??????????????? return RecordCount / PageSize;
??????????? }
??????? }
??? }
}
/***************************************************************
?************** 下面是这个分页类对应的存储过程******************
?***************************************************************
Create PROC [dbo].[SP_ViewPage]????????
????????????
??? --高效通用分页存储过程(双向检索)???????
??? --敬告：适用于单一主键或存在唯一值列的表或视图?????????
??? --ps:Sql语句为8000字节,调用时请注意传入参数及sql总长度不要超过指定范围?????????
????????????
??? @TableName VARCHAR(200),???? --表名?????????
??? @FieldList VARCHAR(2000),??? --显示列名，如果是全部字段则为*? --[至少要传个*进来]?????????
??? @PrimaryKey VARCHAR(100),??? --单一主键或唯一值键
??? @Where VARCHAR(2000),?? --查询条件 不含'where'字符，如id>10 and len(userid)>9?????????
??? @Order VARCHAR(1000),? --排序 不含'order by'字符，如id asc,userid desc，必须指定asc或desc 也可以不指定排序字段直接传null 或者 ''? 进来
??? --注意当@SortType=3时生效，记住一定要在最后加上主键，否则会让你比较郁闷??
??? @SortType INT,? --排序规则 1:正序asc 2:倒序desc 3:多列排序方法[多列排序,必须给@Order 赋值,其他两种排序的倒无所谓]?????????
??? @RecorderCount INT,????????? --记录总数 0:会返回总记录?????????
??? @PageSize INT,?????????????? --每页输出的记录数?????????
??? @PageIndex INT,????????????? --当前页数?????????
??? @TotalCount INT OUTPUT ,???? --记返回总记录?????????
??? @TotalPageCount INT OUTPUT?? --返回总页数?????????
AS?????????
SET NOCOUNT ON?????????
??? IF ISNULL(@TotalCount,'') = '' SET @TotalCount = 0?????????
??? SET @Order = RTRIM(LTRIM(@Order))?????????
??? SET @PrimaryKey = RTRIM(LTRIM(@PrimaryKey))?????????
??? SET @FieldList = REPLACE(RTRIM(LTRIM(@FieldList)),' ','')?????????
??? WHILE CHARINDEX(', ',@Order) > 0 or CHARINDEX(' ,',@Order) > 0?????????
??????? BEGIN?????????
??????????? SET @Order = REPLACE(@Order,', ',',')?????????
??????????? SET @Order = REPLACE(@Order,' ,',',')?????????
??????? END?????????
??? IF ISNULL(@TableName,'') = '' or ISNULL(@FieldList,'') = ''?????????
??????????? or ISNULL(@PrimaryKey,'') = ''?????????
??????????? or @SortType < 1 or @SortType >3?????????
??????????? or @RecorderCount < 0 or @PageSize < 0 or @PageIndex < 0?????????
??????? BEGIN?????????
??????????? PRINT('ERR_00')?????????
??????????? RETURN?????????
??????? END?????????
??? IF @SortType = 3?????????
??????? BEGIN?????????
??????????? IF (UPPER(RIGHT(@Order,4))!=' ASC' AND UPPER(RIGHT(@Order,5))!=' DESC')?????????
??????????????? BEGIN PRINT('ERR_02') RETURN END?????????
??????? END?????????
??? DECLARE @new_where1 VARCHAR(1000)?????????
??? DECLARE @new_where2 VARCHAR(1000)?????????
??? DECLARE @new_order1 VARCHAR(1000)?????????
??? DECLARE @new_order2 VARCHAR(1000)?????????
??? DECLARE @new_order3 VARCHAR(1000)?????????
??? DECLARE @Sql VARCHAR(8000)?????????
??? DECLARE @SqlCount NVARCHAR(4000)?????????
??? IF ISNULL(@where,'') = ''?????????
??????? BEGIN?????????
??????????? SET @new_where1 = ' '?????????
??????????? SET @new_where2 = ' Where '?????????
??????? END?????????
??? ELSE?????????
??????? BEGIN?????????
??????????? SET @new_where1 = ' Where ' + @where?????????
??????????? SET @new_where2 = ' Where ' + @where + ' AND '?????????
??????? END?????????
??? IF ISNULL(@order,'') = '' or @SortType = 1 or @SortType = 2?????????
??????? BEGIN?????????
??????????? IF @SortType = 1?????????
??????????????? BEGIN?????????
??????????????????? SET @new_order1 = ' orDER BY ' + @PrimaryKey + ' ASC'?????????
??????????????????? SET @new_order2 = ' orDER BY ' + @PrimaryKey + ' DESC'?????????
??????????????? END?????????
??????????? IF @SortType = 2?????????
??????????????? BEGIN?????????
??????????????????? SET @new_order1 = ' orDER BY ' + @PrimaryKey + ' DESC'?????????
??????????????????? SET @new_order2 = ' orDER BY ' + @PrimaryKey + ' ASC'?????????
??????????????? END?????????
??????? END?????????
??? ELSE?????????
??????? BEGIN?????????
??????????? SET @new_order1 = ' orDER BY ' + @Order?????????
??????? END?????????
???
??? IF @SortType = 3 AND CHARINDEX(','+@PrimaryKey+' ',','+@Order)>0?????????
??? BEGIN?????????
??????? SET @new_order1 = ' orDER BY ' + @Order?????????
??????? SET @new_order2 = @Order + ','?????????
??????? SET @new_order2 = REPLACE(REPLACE(@new_order2,'ASC,','{ASC},'),'DESC,','{DESC},')?????????
??????? SET @new_order2 = REPLACE(REPLACE(@new_order2,'{ASC},','DESC,'),'{DESC},','ASC,')?????????
??????? SET @new_order2 = ' orDER BY ' + SUBSTRING(@new_order2,1,LEN(@new_order2)-1)?????????
??????? IF @FieldList <> '*'?????????
??????????? BEGIN?????????
??????????????? SET @new_order3 = REPLACE(REPLACE(@Order + ',','ASC,',','),'DESC,',',')?????????
??????????????? SET @FieldList = ',' + @FieldList?????????
??????????????? WHILE CHARINDEX(',',@new_order3)>0?????????
??????????????????? BEGIN?????????
?????????????????????? IF CHARINDEX(SUBSTRING(','+@new_order3,1,CHARINDEX(',',@new_order3)),','+@FieldList+',')>0?????????
??????????????????????????? BEGIN?????????
??????????????????????????????? SET @FieldList =?????????
??????????????????????????????? @FieldList + ',' + SUBSTRING(@new_order3,1,CHARINDEX(',',@new_order3))?????????
??????????????????????????? END?????????
??????????????????????? SET @new_order3 =?????????
??????????????????????? SUBSTRING(@new_order3,CHARINDEX(',',@new_order3)+1,LEN(@new_order3))?????????
??????????????????? END?????????
??????????????? SET @FieldList = SUBSTRING(@FieldList,2,LEN(@FieldList))?????????
??????????? END?????????
??????? END????
????????
??? SET @SqlCount = 'Select @TotalCount=COUNT(*),@TotalPageCount=CEILING((COUNT(*)+0.0)/'?????????
??? + CAST(@PageSize AS VARCHAR)+') FROM (Select * FROM ' + @TableName + @new_where1+') AS T'?????????
??? IF @RecorderCount = 0?????????
??????? BEGIN?????????
??????????? EXEC SP_EXECUTESQL @SqlCount,N'@TotalCount INT OUTPUT,@TotalPageCount INT OUTPUT',?????????
??????????? @TotalCount OUTPUT,@TotalPageCount OUTPUT?????????
??????? END?????????
??? ELSE?????????
??????? BEGIN?????????
??????????? Select @TotalCount = @RecorderCount???????
??????? END?????????
??? IF @PageIndex > CEILING((@TotalCount+0.0)/@PageSize)?????????
??????? BEGIN?????????
??????????? SET @PageIndex = CEILING((@TotalCount+0.0)/@PageSize)?????????
??????? END?????????
??? IF @PageIndex = 1 or @PageIndex >= CEILING((@TotalCount+0.0)/@PageSize)?????????
??????? BEGIN?????????
??????????? IF @PageIndex = 1 --返回第一页数据?????????
??????????????? BEGIN?????????
??????????????????? SET @Sql = 'Select * FROM (Select TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM '?????????
??????????????????? + @TableName + @new_where1 + @new_order1 +') AS TMP ' + @new_order1???
??????????????? END?????????
??????????? IF @PageIndex >= CEILING((@TotalCount+0.0)/@PageSize) --返回最后一页数据?????????
??????????????? BEGIN?????????
??????????????????? SET @Sql = 'Select TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ('?????????
??????????????????? + 'Select TOP ' + STR(ABS(@PageSize*@PageIndex-@TotalCount-@PageSize))?????????
??????????????????? + ' ' + @FieldList + ' FROM '?????????
??????????????????? + @TableName + @new_where1 + @new_order2 + ' ) AS TMP '?????????
??????????????????? + @new_order1?????????
??????????????? END?????????
??????? END?????????
??? ELSE?????
???????????
??????? BEGIN?????????
??????? IF @SortType = 1 --仅主键正序排序?????????
??????????? BEGIN?????????
??????????????? IF @PageIndex <= CEILING((@TotalCount+0.0)/@PageSize)/2 --正向检索?????????
??????????????????? BEGIN?????????
??????????????????????? SET @Sql = 'Select TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM '?????????
??????????????????????? + @TableName + @new_where2 + @PrimaryKey + ' > '?????????
??????????????????????? + '(Select MAX(' + @PrimaryKey + ') FROM (Select TOP '?????????
??????????????????????? + STR(@PageSize*(@PageIndex-1)) + ' ' + @PrimaryKey?????????
??????????????????????? + ' FROM ' + @TableName?????????
??????????????????????? + @new_where1 + @new_order1 +' ) AS TMP) '+ @new_order1?????????
??????????????????? END?????????
??????????????? ELSE --反向检索?????????
??????????????????? BEGIN?????????
??????????????????????? SET @Sql = 'Select TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ('?????????
??????????????????????? + 'Select TOP ' + STR(@PageSize) + ' '?????????
??????????????????????? + @FieldList + ' FROM '?????????
??????????????????????? + @TableName + @new_where2 + @PrimaryKey + ' < '?????????
??????????????????????? + '(Select MIN(' + @PrimaryKey + ') FROM (Select TOP '????????
??????????????????????? + STR(@TotalCount-@PageSize*@PageIndex) + ' ' + @PrimaryKey?????????
??????????????????????? + ' FROM ' + @TableName?????????
??????????????????????? + @new_where1 + @new_order2 +' ) AS TMP) '+ @new_order2?????????
??????????????????????? + ' ) AS TMP ' + @new_order1?????????
??????????????????? END?????????
??????????? END?????????
??????? IF @SortType = 2 --仅主键反序排序?????????
??????????? BEGIN?????????
??????????????? IF @PageIndex <= CEILING((@TotalCount+0.0)/@PageSize)/2 --正向检索?????????
??????????????????? BEGIN?????????
??????????????????????? SET @Sql = 'Select TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM '?????????
??????????????????????? + @TableName + @new_where2 + @PrimaryKey + ' < '?????????
??????????????????????? + '(Select MIN(' + @PrimaryKey + ') FROM (Select TOP '?????????
??????????????????????? + STR(@PageSize*(@PageIndex-1)) + ' ' + @PrimaryKey?????????
??????????????????????? +' FROM '+ @TableName?????????
??????????????????????? + @new_where1 + @new_order1 + ') AS TMP) '+ @new_order1?????????
??????????????????? END?????????
??????????????? ELSE --反向检索?????????
??????????????????? BEGIN?????????
??????????????????????? SET @Sql = 'Select TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ('?????????
??????????????????????? + 'Select TOP ' + STR(@PageSize) + ' '?????????
??????????????????????? + @FieldList + ' FROM '?????????
??????????????????????? + @TableName + @new_where2 + @PrimaryKey + ' > '?????????
??????????????????????? + '(Select MAX(' + @PrimaryKey + ') FROM (Select TOP '?????????
??????????????????????? + STR(@TotalCount-@PageSize*@PageIndex) + ' ' + @PrimaryKey?????????
??????????????????????? + ' FROM ' + @TableName?????????
??????????????????????? + @new_where1 + @new_order2 +' ) AS TMP) '+ @new_order2?????????
??????????????????????? + ' ) AS TMP ' + @new_order1?????????
??????????????????? END?????????
??????????? END?????????
??????? IF @SortType = 3 --多列排序，必须包含主键，且放置最后，否则不处理?????????
??????????? BEGIN?????????
??????????????? IF CHARINDEX(',' + @PrimaryKey + ' ',',' + @Order) = 0?????????
??????????????????? BEGIN PRINT('ERR_02') RETURN END?????????
??????????????????? IF @PageIndex <= CEILING((@TotalCount+0.0)/@PageSize)/2 --正向检索?????????
??????????????????????? BEGIN?????????
??????????????????????????? SET @Sql = 'Select TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ( '?????????
??????????????????????????? + 'Select TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ( '?????????
??????????????????????????? + ' Select TOP ' + STR(@PageSize*@PageIndex) + ' ' + @FieldList?????????
??????????????????????????? + ' FROM ' + @TableName + @new_where1 + @new_order1 + ' ) AS TMP '?????????
??????????????????????????? + @new_order2 + ' ) AS TMP ' + @new_order1?????????
??????????????????????? END?????????
??????????????????? ELSE --反向检索?????????
??????????????????????? BEGIN?????????
??????????????????????????? SET @Sql = 'Select TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ( '?????????
??????????????????????????? + 'Select TOP ' + STR(@PageSize) + ' ' + @FieldList + ' FROM ( '?????????
??????????????????????????? + ' Select TOP ' + STR(@TotalCount-@PageSize *@PageIndex+@PageSize) + ' ' + @FieldList?????????
??????????????????????????? + ' FROM ' + @TableName + @new_where1 + @new_order2 + ' ) AS TMP '?????????
??????????????????????????? + @new_order1 + ' ) AS TMP ' + @new_order1?????????
??????????????????????? END?????????
??????????? END?????????
??????? END?????????
??? PRINT(@SQL)?????????
??? EXEC(@Sql)
*/
