Question

怎么样在asp.net中不用.net控件实现分页,说的详细点

怎么样在asp.net中不用.net控件实现分页

Answer 1

用数据库游标，直接在查询时就定义好你的每页的大小和当前查询的页数，查询出来的结果就是当前页
if exists (select * from dbo.sysobjects where id = object_id(N'[dbo].[Paging_Cursor]') and OBJECTPROPERTY(id, N'IsProcedure') = 1)
drop procedure [dbo].[Paging_Cursor]
GO

SET QUOTED_IDENTIFIER ON
GO
SET ANSI_NULLS ON
GO

CREATE PROCEDURE Paging_Cursor (
@Tables varchar(1000),
@PK varchar(100),
@Sort varchar(200) = NULL,
@PageNumber int = 1,
@PageSize int = 10,
@Fields varchar(1000) = '*',
@Filter varchar(1000) = NULL,
@Group varchar(1000) = NULL)
AS

/*Find the @PK type*/
DECLARE @PKTable varchar(100)
DECLARE @PKName varchar(100)
DECLARE @type varchar(100)
DECLARE @prec int

IF CHARINDEX('.', @PK) > 0
BEGIN
SET @PKTable = SUBSTRING(@PK, 0, CHARINDEX('.',@PK))
SET @PKName = SUBSTRING(@PK, CHARINDEX('.',@PK) + 1, LEN(@PK))
END
ELSE
BEGIN
SET @PKTable = @Tables
SET @PKName = @PK
END

SELECT @type=t.name, @prec=c.prec
FROM sysobjects o
JOIN syscolumns c on o.id=c.id
JOIN systypes t on c.xusertype=t.xusertype
WHERE o.name = @PKTable AND c.name = @PKName

IF CHARINDEX('char', @type) > 0
SET @type = @type + '(' + CAST(@prec AS varchar) + ')'

DECLARE @strPageSize varchar(50)
DECLARE @strStartRow varchar(50)
DECLARE @strFilter varchar(1000)
DECLARE @strGroup varchar(1000)

/*Default Sorting*/
IF @Sort IS NULL OR @Sort = ''
SET @Sort = @PK

/*Default Page Number*/
IF @PageNumber < 1
SET @PageNumber = 1

/*Set paging variables.*/
SET @strPageSize = CAST(@PageSize AS varchar(50))
SET @strStartRow = CAST(((@PageNumber - 1)*@PageSize + 1) AS varchar(50))

/*Set filter & group variables.*/
IF @Filter IS NOT NULL AND @Filter != ''
SET @strFilter = ' WHERE ' + @Filter + ' '
ELSE
SET @strFilter = ''
IF @Group IS NOT NULL AND @Group != ''
SET @strGroup = ' GROUP BY ' + @Group + ' '
ELSE
SET @strGroup = ''

/*Execute dynamic query*/
EXEC(
'DECLARE @PageSize int
SET @PageSize = ' + @strPageSize + '

DECLARE @PK ' + @type + '
DECLARE @tblPK TABLE (
PK ' + @type + ' NOT NULL PRIMARY KEY
)

DECLARE PagingCursor CURSOR DYNAMIC READ_ONLY FOR
SELECT ' + @PK + ' FROM ' + @Tables + @strFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort + '

OPEN PagingCursor
FETCH RELATIVE ' + @strStartRow + ' FROM PagingCursor INTO @PK

SET NOCOUNT ON

WHILE @PageSize > 0 AND @@FETCH_STATUS = 0
BEGIN
INSERT @tblPK (PK) VALUES (@PK)
FETCH NEXT FROM PagingCursor INTO @PK
SET @PageSize = @PageSize - 1
END

CLOSE PagingCursor
DEALLOCATE PagingCursor

SELECT ' + @Fields + ' FROM ' + @Tables + ' JOIN @tblPK tblPK ON ' + @PK + ' = tblPK.PK ' + @strFilter + ' ' + @strGroup + ' ORDER BY ' + @Sort
)

GO
SET QUOTED_IDENTIFIER OFF
GO
SET ANSI_NULLS ON
GO