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ASP.NET + SQL 分页存储过程以及对应的类

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 ASP.NET + SQL 分页存储过程以及对应的类

这个类是在结合.Net动软代码生成器一起使用的,如果不用动软,则需要自己写执行存储过程的方法

 


 

using System;
using System.Data;
using System.Text;
using System.Data.SqlClient;
using Maticsoft.DBUtility;//请先添加引用
namespace DAL
{
    /// <summary>
    /// 数据分页访问类SP_ViewPage。
    /// </summary>
    public class SP_ViewPage
    {
        public enum SortType
        {
            ASC = 1,
            DESC = 2,
            Multinomial = 3
        }
        /// </summary>
        /// <param name="TableName">表名</param>
        /// <param name="PrimaryKey">单一主键或唯一值键</param>
        /// <param name="PageIndex">当前页数[当前要显示的页码]</param>
        /// <param name="PageSize">每页输出的记录数</param>
        /// <param name="FieldShow">以逗号分隔的要显示的字段列表,如果不指定,则显示所有字段</param>
        /// <param name="strOrder">
        /// 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
        /// </param>
        /// <param name="strWhere">查询条件 不含'where'字符,如id>10 and len(userid)>9</param>
        /// <param name="TotalPageCount">返回总页数</param>
        /// <param name="TotalCount">记返回总记录</param>
        /// <returns>DataSet</returns>
        public static DataSet GetListByPage(String TableName, String PrimaryKey, int PageIndex, int PageSize, string FieldShow,String strOrder, String strWhere, out int TotalPageCount, out int TotalCount)
        {
            //自己创建的根据传入的参数自动进行判断是使用升序还是降序,还是多条件排序
            //排序的依据
            SortType sortType = SortType.DESC;
            if (strOrder.Split(',').Length > 1)//多条件的
            {
                sortType = SortType.Multinomial;
            }
            else //单个条件或者无条件的
            {
                if (null == strOrder || "".Equals(strOrder))//无条件的
                {
                    sortType = SortType.DESC;
                }
                else if (strOrder.ToLower().IndexOf("asc") >= 0)
                {
                    string[] orderTemp = strOrder.ToLower().Split(' ');//使用空格分隔,确保asc不是某个字段里的字母
                    if (2 == orderTemp.Length && orderTemp[1].Equals("asc"))
                    {
                        sortType = SortType.ASC;
                    }
                }
            }
            if (null == FieldShow || "".Equals(FieldShow.Trim()))
            {
                FieldShow = " * ";
            }
            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)
*/

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