alter PROCEDURE pagination

@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

@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)

--@result varchar(1000) output

AS

declare @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!=''

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

--如果@OrderType不是0，就执行降序，这句很重要！

if @OrderType!=0

begin

set @strTmp='<(select min'

set @strOrder='order by ['+@fldName+'] desc'

end

else

begin

set @strTmp='>(select max'

set @strOrder='order by ['+@fldName+'] asc'

end

--如果是第一页就执行以下代码，这样会加快执行速度

if @PageIndex=1

begin

if @strWhere!=''

set @strSQL='select top '+str(@PageSize)+' '+@strGetFields+' from ['+@tblName+'] where '+@strWhere+' '+@strOrder

else

set @strSQL='select top'+str(@PageSize)+' '+@strGetFields+' from ['+@tblName+']'+@strOrder

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!=''

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

/*

*/

--set @result=@strSQL

end

exec(@strSQL)

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

DataTable dt=GetCustomersData("Customers","CustomerID,CompanyName","CustomerID",10,2,0,1,"").Tables[0];

GridView1.DataSource = dt;

GridView1.DataBind();

}

}

private DataSet GetCustomersData(string tblName, string strGetFields, string fldName, int PageSize, int PageIndex, int doCount, int OrderType, string strWhere)

{

string conns = ConfigurationManager.ConnectionStrings["NorthwindConnectionString"].ToString();

string connString = ConfigurationSettings.AppSettings["NorthwindConnectionString"];

SqlConnection conn = new SqlConnection(connString);

SqlCommand comm = new SqlCommand("pagination",conn);

comm.Parameters.Add(new SqlParameter("@tblName",SqlDbType.VarChar));//表名

comm.Parameters[0].Value = tblName;

comm.Parameters.Add(new SqlParameter("@strGetFields", SqlDbType.VarChar));//返回的列

comm.Parameters[1].Value = strGetFields;

comm.Parameters.Add(new SqlParameter("@fldName", SqlDbType.VarChar));//排序的字段名

comm.Parameters[2].Value = fldName;

comm.Parameters.Add(new SqlParameter("@PageSize", SqlDbType.Int));//页尺寸

comm.Parameters[3].Value = PageSize;

comm.Parameters.Add(new SqlParameter("@PageIndex", SqlDbType.Int));//页码

comm.Parameters[4].Value = PageIndex;

comm.Parameters.Add(new SqlParameter("@doCount", SqlDbType.Int));//是否返回记录总数，0为不返回，1为返回

comm.Parameters[5].Value = doCount;

comm.Parameters.Add(new SqlParameter("@OrderType", SqlDbType.Int));//设置排序类型，0为升序，非0为降序

comm.Parameters[6].Value = OrderType;

comm.Parameters.Add(new SqlParameter("@strWhere", SqlDbType.VarChar));//where语句

comm.Parameters[7].Value = strWhere;

comm.CommandType = CommandType.StoredProcedure;

SqlDataAdapter dataAdapter = new SqlDataAdapter(comm);

DataSet ds = new DataSet();

dataAdapter.Fill(ds);

return ds;

declare @answer varchar(1000)

exec pagination 'Customers','CustomerID,CompanyName','CustomerID',10,2,0,1,'CustomerID>''A''',@answer output

select @answer

----------------------------------------------------------------------

select top 10 CustomerID,CompanyName

from [Customers]

where [CustomerID]>

(

select max([CustomerID])

from (

select top 10 [CustomerID]

from [Customers]

order by [CustomerID] asc

) as tblTmp

)

order by [CustomerID] asc

select top 10 CustomerID,CompanyName

from [Customers]

where [CustomerID]<

(

select min([CustomerID])

from (

select top 10 [CustomerID]

from [Customers]

order by [CustomerID] desc

) as tblTmp

)order by [CustomerID] desc

select top 10 CustomerID,CompanyName

from [Customers]

where [CustomerID]<

(

select min([CustomerID])

from

(

select top 10 [CustomerID]

from [Customers] where CustomerID>'A' order by [CustomerID] desc) as tblTmp) and CustomerID>'A' order by [Cu