分页类，datalist分页;(C#)asp.net

using System.Data;
using System.Configuration;
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;

/// <summary>
/// Showpage 的摘要说明
/// </summary>
    public class ShowPage
    {
        public ShowPage(int page_size, SqlDataAdapter ds)
        {
            ds.Fill(this.bataset);
            count = this.bataset.Tables[0].Rows.Count;
            this.total_page = count / page_size + 1;
            this.ds = ds;
            this.page_size = page_size;
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }
        public ShowPage()
        {
        }
        int page_size;//每页显示记录条数

        public int Page_size
        {
            get { return page_size; }
            set { page_size = value; }
        }

        SqlDataAdapter ds = new SqlDataAdapter();
        int page_index;
        public int Page_index
        {
            get { return page_index; }
            set { page_index = value; }
        }
        int count;//总记录条数

        public int Count
        {
            get { return count; }
            set { count = value; }
        }
        int total_page;//总页数

        public int Total_page
        {
            get { return total_page; }
            set { total_page = value; }
        }
        DataSet bataset = new DataSet();//数据库记录集合
        public DataSet Bataset
        {
            get { return bataset; }
            set { bataset = value; }
        }
        DataSet aataset = new DataSet();//每页记录集合，用于显示分页
        public DataSet Aataset
        {
            get { return aataset; }
            set { aataset = value; }
        }
        public void ShowPageset()
        {
            int page_index;
            page_index = this.page_index;
            if (page_index * page_size <= count)
            {

                ds.Fill(aataset, page_size * (page_index - 1), page_size, "temp");
            }
            else
            {
                ds.Fill(aataset, page_size * (page_index - 1), count - page_size * (page_index - 1), "temp");
            }
        }
  }

----------------分页类完毕------------------------------------------------------------------------------------------------------------------------

看来这里写东西还有讲究，上边那么多东西不知道怎么用；

先来看下示范吧，对于新手来说他实在是太好用了!

可以给控件当数据源！这里面的newpage 是一个datalist控件。这样就可以给datalist 控件分页了。是不是很简单

 protected void Page_Load(object sender, EventArgs e)
    {
        //接收传入参数。判断查询内容。循环显示内容。
        SqlConnection conn = new SqlConnection("server=.;database=OilWeb;uid=sa;pwd=qwe2323478");
        SqlDataAdapter adapter = new SqlDataAdapter("select imageurl,oilname,oilprice,decration  from Oil_product", conn);
        ShowPage newpage = new ShowPage(9, adapter);
        total_count = newpage.Count;
      
        if (IsPostBack)
        {
            newpage.Page_index = Int32.Parse(Request.QueryString["page_index"]);
        }
        else
        {
            newpage.Page_index = 1;
        }
        newpage.ShowPageset();
        leibiao.DataSource = newpage.Aataset.Tables["temp"];
        leibiao.DataBind();

}

在来看一个一个演示吧。这里动态加载用户控件。实现分页。有分页导航。不好过导航就很粗糙了。希望大家给出更好的代码

 protected void Page_Load(object sender, EventArgs e)
    {
        string type;
        string type_url;
        if (Request.QueryString["type"] == "" || Request.QueryString["type"]==null || Request.QueryString["type"]==string.Empty)
        {
            type = null;
            type_url=null;
        }
        else
        {
            type = "where Oiltype=" + "'" + Request.QueryString["type"] + "'" + "";
            type_url = type + Request["type"].ToString();
         
        } 
      
           int index_str;
            if(Request["index"] ==null )
            {
                Session["page_index"] = 1; 
            }
        else
        {
            index_str =int.Parse( Request["index"]);
           Session["page_index"] = index_str;
        }
        ShowPage aa = new ShowPage(10, new SqlDataAdapter("SELECT * FROM Oil_product"+" "+type+"" , (new SqlConnection("server=.;database=aspnetdb;uid=sa;pwd=qwe2323478"))));
        aa.Page_index = int.Parse(Session["page_index"].ToString());
        aa.ShowPageset();
        Session["Total_page"] = aa.Total_page;//要定义一个Session["Total_page"]用作全局变量，全局变量的方法有很多，。显然我这不是最好的
        if (!IsPostBack)
        {
            for (int i = 1; i <= aa.Total_page; i++)
            {
                string str = "<a href=\"Default2.aspx?" + type_url + "&index=" + i + "\">" + i.ToString() + "</a>";
                suoyin.InnerHtml += str;
            }
        }
            for (int i = 1; i <= aa.Aataset.Tables[0].Rows.Count; i++)
            {

                 //modules_WebUserControl2就是用户控件。具体的属性一目了然了
                Control c = LoadControl("modules/WebUserControl2.ascx");
                ((modules_WebUserControl2)c).Oilname = aa.Aataset.Tables[0].Rows[i - 1]["Oilname"].ToString();
                ((modules_WebUserControl2)c).Oilstyle = aa.Aataset.Tables[0].Rows[i - 1]["Oiltype"].ToString();
                ((modules_WebUserControl2)c).Oilprice = decimal.Parse(aa.Aataset.Tables[0].Rows[i - 1]["Oilprice"].ToString());
                ((modules_WebUserControl2)c).Imgurl = aa.Aataset.Tables[0].Rows[i - 1]["OilimageUrl"].ToString();
                ((modules_WebUserControl2)c).Oilid = int.Parse(aa.Aataset.Tables[0].Rows[i - 1]["OilId"].ToString());
                Page.Controls[3].Controls.Add(c);
            }
    }

大卖都很简单！第一次写东西，还请大家多多包含，高手们多多指点。有不懂的地方可以给我留言。