.net调用分页存储过程

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--TOP n 实现的通用分页存储过程(本分页存储过程为网上转载，然后稍作修改)if exists(select * from sysobjects where name='sp_PageView')drop proc sp_PageViewgoCREATE PROC sp_PageView@tbname     sysname,               --要分页显示的表名@FieldKey   nvarchar(1000),      --用于定位记录的主键(惟一键)字段,可以是逗号分隔的多个字段@PageCurrent int=1,               --要显示的页码@PageSize   int=10,                --每页的大小(记录数)@FieldShow nvarchar(1000)='',      --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@FieldOrder nvarchar(1000)='',      --以逗号分隔的排序字段列表,可以指定在字段后面指定DESC/ASC用于指定排序顺序@Where    nvarchar(1000)='',     --查询条件@PageCount int OUTPUT,             --总页数@RecordsCount int OUTPUT--总记录数ASSET NOCOUNT ON--检查对象是否有效IF OBJECT_ID(@tbname) IS NULLBEGIN    RAISERROR(N'对象"%s"不存在',1,16,@tbname)    RETURNENDIF OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsTable')=0    AND OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsView')=0    AND OBJECTPROPERTY(OBJECT_ID(@tbname),N'IsTableFunction')=0BEGIN    RAISERROR(N'"%s"不是表、视图或者表值函数',1,16,@tbname)    RETURNEND --分页字段检查IF ISNULL(@FieldKey,N'')=''BEGIN    RAISERROR(N'分页处理需要主键（或者惟一键）',1,16)    RETURNEND --其他参数检查及规范IF ISNULL(@PageCurrent,0)<1 SET @PageCurrent=1IF ISNULL(@PageSize,0)<1 SET @PageSize=10IF ISNULL(@FieldShow,N'')=N'' SET @FieldShow=N'*'IF ISNULL(@FieldOrder,N'')=N''    SET @FieldOrder=N''ELSE    SET @FieldOrder=N'ORDER BY '+LTRIM(@FieldOrder)IF ISNULL(@Where,N'')=N''    SET @Where=N''ELSE    SET @Where=N'WHERE ('+@Where+N')' --如果@PageCount为NULL值,则计算总页数(这样设计可以只在第一次计算总页数,以后调用时,把总页数传回给存储过程,避免再次计算总页数,对于不想计算总页数的处理而言,可以给@PageCount赋值)IF @PageCount IS NULLBEGIN    DECLARE @sql nvarchar(4000)    SET @sql=N'SELECT @PageCount=COUNT(*)'        +N' FROM '+@tbname        +N' '+@Where    EXEC sp_executesql @sql,N'@PageCount int OUTPUT',@PageCount OUTPUT    SET @RecordsCount=@PageCount--后面加的，因为用aspnetpage分页，不需要总页数，只需要总记录数    SET @PageCount=(@PageCount+@PageSize-1)/@PageSize    END --计算分页显示的TOPN值DECLARE @TopN varchar(20),@TopN1 varchar(20)SELECT @TopN=@PageSize,    @TopN1=(@PageCurrent-1)*@PageSize --第一页直接显示IF @PageCurrent=1    EXEC(N'SELECT TOP '+@TopN        +N' '+@FieldShow        +N' FROM '+@tbname        +N' '+@Where        +N' '+@FieldOrder)ELSEBEGIN    --处理别名    IF @FieldShow=N'*'        SET @FieldShow=N'a.*'     --生成主键(惟一键)处理条件    DECLARE @Where1 nvarchar(4000),@Where2 nvarchar(4000),        @s nvarchar(1000),@Field sysname    SELECT @Where1=N'',@Where2=N'',@s=@FieldKey    WHILE CHARINDEX(N',',@s)>0        SELECT @Field=LEFT(@s,CHARINDEX(N',',@s)-1),            @s=STUFF(@s,1,CHARINDEX(N',',@s),N''),            @Where1=@Where1+N' AND a.'+@Field+N'=b.'+@Field,            @Where2=@Where2+N' AND b.'+@Field+N' IS NULL',            @Where=REPLACE(@Where,@Field,N'a.'+@Field),            @FieldOrder=REPLACE(@FieldOrder,@Field,N'a.'+@Field),            @FieldShow=REPLACE(@FieldShow,@Field,N'a.'+@Field)    SELECT @Where=REPLACE(@Where,@s,N'a.'+@s),        @FieldOrder=REPLACE(@FieldOrder,@s,N'a.'+@s),        @FieldShow=REPLACE(@FieldShow,@s,N'a.'+@s),        @Where1=STUFF(@Where1+N' AND a.'+@s+N'=b.'+@s,1,5,N''),           @Where2=CASE            WHEN @Where='' THEN N'WHERE ('            ELSE @Where+N' AND ('            END+N'b.'+@s+N' IS NULL'+@Where2+N')'     --执行查询    EXEC(N'SELECT TOP '+@TopN        +N' '+@FieldShow        +N' FROM '+@tbname        +N' a LEFT JOIN(SELECT TOP '+@TopN1        +N' '+@FieldKey        +N' FROM '+@tbname        +N' a '+@Where        +N' '+@FieldOrder        +N')b ON '+@Where1        +N' '+@Where2        +N' '+@FieldOrder)ENDGO

/// <summary>        /// 通过分页存储过程获取数据        /// </summary>        /// <param name="tbname">数据表名，多个可以以这种方式 table1 inner join table2 ....</param>        /// <param name="FieldKey">主键字段,必须是整型</param>        /// <param name="PageCurrent">当前页</param>        /// <param name="PageSize">每页显示记录数</param>        /// <param name="FieldShow">要显示出来的列字段</param>        /// <param name="FieldOrder">排序方式</param>        /// <param name="Where">附加查询条件</param>        /// <param name="PageCount">总页数</param>        /// <param name="RecordsCount">总记录数</param>        /// <returns></returns>        public DataTable GetDataWithProc(string tbname, string FieldKey, int PageCurrent, int PageSize, string FieldShow, string FieldOrder, string Where, out int PageCount, out int RecordsCount)        {            using (SqlConnection conn = new SqlConnection(dbConnection.connStr))            {                conn.Open();                SqlCommand cmd = new SqlCommand();                cmd.CommandText = "sp_PageView";                cmd.CommandType = CommandType.StoredProcedure;                cmd.Connection = conn;                SqlParameter[] spa ={                                        new SqlParameter("@tbname",SqlDbType.NVarChar,1000),                                        new SqlParameter("@FieldKey", SqlDbType.NVarChar, 1000),                                        new SqlParameter("@PageCurrent", SqlDbType.Int),                                        new SqlParameter("@PageSize", SqlDbType.Int),                                        new SqlParameter("@FieldShow", SqlDbType.NVarChar, 1000),                                        new SqlParameter("@FieldOrder", SqlDbType.NVarChar, 1000),                                        new SqlParameter("@Where", SqlDbType.NVarChar, 1000),                                        new SqlParameter("@PageCount", SqlDbType.Int),                                        new SqlParameter("@RecordsCount", SqlDbType.Int)                                   };                spa[0].Direction = ParameterDirection.Input;                spa[0].Value = tbname;                spa[1].Direction = ParameterDirection.Input;                spa[1].Value = FieldKey;                spa[2].Direction = ParameterDirection.Input;                spa[2].Value = PageCurrent;                spa[3].Direction = ParameterDirection.Input;                spa[3].Value = PageSize;                spa[4].Direction = ParameterDirection.Input;                spa[4].Value = FieldShow;                spa[5].Direction = ParameterDirection.Input;                spa[5].Value = FieldOrder;                spa[6].Direction = ParameterDirection.Input;                spa[6].Value = Where;                spa[7].Direction = ParameterDirection.Output;                spa[8].Direction = ParameterDirection.Output;                foreach (SqlParameter para in spa)                {                    cmd.Parameters.Add(para);                }                                SqlDataAdapter sda = new SqlDataAdapter();                sda.SelectCommand = cmd;                DataTable dt = new DataTable();                sda.Fill(dt);                PageCount = Convert.ToInt32(spa[7].Value);                RecordsCount = Convert.ToInt32(spa[8].Value);                return dt;            }        }

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