利用AspNetPager控件实现数据分页(存储过程)

一、准备工作：
1、首先把AspNetPager.dll，引用到项目中来
2、添加到工具箱中，在需要用到得时候拖拽进来
二、进入代码工作：

1、建立Pro_page.aspx页面：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Pro_page.aspx.cs" Inherits="Pro_page" %>

<%@ Register Assembly="AspNetPager" Namespace="Wuqi.Webdiyer" TagPrefix="webdiyer" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

2、页面Pro_page.aspx.cs的代码：

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;

public partial class Pro_page : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if(!IsPostBack)
        {
            AspNetPager1.PageSize = 2;
            Binds();
        }
    }

    public void Binds()
    {
        SqlHelper sqlhelp = new SqlHelper(); //此处实例化数据库连接类，换成自己的就可以了
        using(SqlConnection conn=new SqlConnection(sqlhelp.ConnString))
        {
            SqlCommand cmd = new SqlCommand();
            cmd.CommandText = "P_GetPagedReCord"; //存储过程名
            cmd.Connection = conn;
            cmd.CommandType = CommandType.StoredProcedure;
            int pageindex = 0;
            string strWhere = "";
            if (AspNetPager1.CurrentPageIndex < 1)
            {
                pageindex = 1;
            }
            else
            {
                pageindex = AspNetPager1.CurrentPageIndex;
            }
            SqlParameter[] parameters ={
             new SqlParameter("@tblname",SqlDbType.VarChar,255),
             new SqlParameter("@strGetFields",SqlDbType.VarChar,1000),
             new SqlParameter("@fldName",SqlDbType.VarChar,255),
             new SqlParameter("@pagesize",SqlDbType.Int,4),
             new SqlParameter("@pageindex",SqlDbType.Int,4),
             new SqlParameter("@doCount",SqlDbType.Bit),
             new SqlParameter("@ordertype",SqlDbType.Bit),
             new SqlParameter("@strwhere",SqlDbType.VarChar,2000)
            };
            parameters[0].Value = "VoteTitle";//数据表名称．
            parameters[1].Value = "VoteID,VoteTitle";//要显示的字段名
            parameters[2].Value = "VoteID"; //主键
            parameters[3].Value = AspNetPager1.PageSize;//每页显示记录数
            parameters[4].Value = pageindex;//索引页
            parameters[5].Value = 0;//这里写死0就行了
            parameters[6].Value = 0;//这里的1是降序，0为升序
            parameters[7].Value = strWhere;//查询条件组合

            foreach (SqlParameter p in parameters)
            {
                cmd.Parameters.Add(p);
            }

            SqlDataAdapter sda = new SqlDataAdapter(cmd);
            DataSet ds = new DataSet();
            sda.Fill(ds);
            GridView1.DataSource = ds.Tables[0].DefaultView;
            GridView1.DataBind();

            //动态设置用户自定义文本内容
            AspNetPager1.RecordCount = int.Parse(ds.Tables[1].Rows[0][0].ToString());
            AspNetPager1.CustomInfoHTML = "记录总数：" + AspNetPager1.RecordCount.ToString() + "条，";
            AspNetPager1.CustomInfoHTML += "共有" + AspNetPager1.PageCount.ToString() + "页，";
            AspNetPager1.CustomInfoHTML += "当前页：" + AspNetPager1.CurrentPageIndex.ToString();
            CustomInfoHTML.Text = AspNetPager1.CustomInfoHTML;
        }
    }
    protected void AspNetPager1_PageChanged(object sender, EventArgs e)
    {
        Binds();
    }
}

3、存储过程代码P_GetPagedReCord：

CREATE PROCEDURE P_GetPagedReCord
@tblname VARCHAR(255), -- 表名
@strGetFields nvarchar(1000) = "*", -- 需要返回的列
@fldName varchar(255)='', -- 排序的字段名
@PageSize int = 2, -- 页尺寸
@PageIndex int = 1, -- 页码
@doCount bit = 0, -- 返回, 非0 值则返回记录总数
@OrderType bit = 0, -- 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)
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 1=1 '+ @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，就执行总数统计。以下的所有代码都是@doCount为的情况：
else
begin
   if @OrderType != 0--降序
   begin
    set @strTmp = '<(select min'
    set @strOrder = ' order by [' + @fldName +'] desc'--如果@OrderType不是0，就执行降序，这句很重要！
   end
   else
   begin
    set @strTmp = '>(select max'
    set @strOrder = ' order by [' + @fldName +'] asc'
   end
   if @PageIndex = 1
   begin
    if @strWhere != ''
     set @strSQL = 'select top ' + str(@PageSize) +' ' + @strGetFields + ' from [' + @tblName + '] where 1=1 ' + @strWhere + ' ' + @strOrder
    else
     set @strSQL = 'select top ' + str(@PageSize) +' ' + @strGetFields + ' from [' + @tblName + '] ' + @strOrder--如果是第一页就执行以上代码，这样会加快执行速度
   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 1=1 ' + @strWhere + ' ' + @strOrder + ') as tblTmp) and 1=1 ' + @strWhere + ' ' + @strOrder
   end
   if @strWhere !=''            --得到记录的总行数
    set @strSQL =@strSQL+ '; select count(*) as Total from [' + @tblName + '] where 1=1 '+ @strWhere
   else
    set @strSQL =@strSQL+ '; select count(*) as Total from [' + @tblName + ']'
end
exec (@strSQL)
RETURN

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