DataList中的分页中首页、下一页、上一页、末页功能 怎么写？
DataList中的分页中首页、下一页、上一页、末页功能 怎么写？ DataList中的分页中首页、下一页、上一页、末页功能 怎么写？
[解决办法]
这个是我写的datalist分页代码,已经分装成控件.需要传的参数已经注释说明
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Text;
namespace B2B.UC
{
public partial class UCPaged : System.Web.UI.UserControl
{
#region 属性组
/// <summary>
/// 源数据源
/// </summary>
private ArrayList objAL;
public ArrayList ObjAL
{
get { return objAL; }
set { objAL = value; }
}
/// <summary>
/// 源数据控件
/// </summary>
private DataList objDl;
public DataList ObjDl
{
get { return objDl; }
set { objDl = value; }
}
/// <summary>
/// 源页面
/// </summary>
private string pageName;
public string PageName
{
get { return pageName; }
set { pageName = value; }
}
/// <summary>
/// url参数哈希表
/// </summary>
private Hashtable parmHt;
public Hashtable ParmHt
{
get { return parmHt; }
set { parmHt = value; }
}
/// <summary>
/// 每页显示数
/// </summary>
private int pageSize;
public int PageSize
{
get
{
if (pageSize == null && pageSize <= 0)
{
return 10;
}
else
{
return pageSize;
}
}
set { pageSize = value; }
}
#endregion
protected void Page_Load(object sender, EventArgs e)
{
bindPagedData(objAL, objDl);
}
/// <summary>
/// 获得分页url参数和源页面
/// </summary>
/// <param name="sourceHT"> </param>
/// <returns> </returns>
private StringBuilder getParmHT(Hashtable sourceHT)
{
StringBuilder parmStr = new StringBuilder();
parmStr = parmStr.Append(pageName);
parmStr = parmStr.Append("?");
if (sourceHT != null && sourceHT.Count > 0)
{
foreach (DictionaryEntry de in sourceHT)
{
parmStr = parmStr.Append(de.Key);
parmStr = parmStr.Append("=");
parmStr = parmStr.Append(de.Value);
parmStr = parmStr.Append("&");
}
}
return parmStr;
}
/// <summary>
/// 绑定分页数据
/// </summary>
private void bindPagedData(ArrayList objAL, DataList sourceDL)
{
if (objAL != null && objAL.Count != 0)
{
PagedDataSource pds = new PagedDataSource();
pds.DataSource = objAL;
pds.AllowPaging = true;
pds.PageSize = pageSize;
int icplIndex = 1;
if (!String.IsNullOrEmpty(Request.QueryString["page"]))
{
icplIndex = int.Parse(Request.QueryString["page"]);
}
if (icplIndex < 1)
{
icplIndex = 1;
}
if (icplIndex > pds.PageCount)
{
icplIndex = pds.PageCount;
}
ltrl_page.Text = WritePage(pds).ToString();
pds.CurrentPageIndex = icplIndex - 1;
sourceDL.DataSource = pds;
sourceDL.DataBind();
}
}
/// <summary>
/// 写出页码
/// </summary>
private StringBuilder WritePage(PagedDataSource pds)
{
StringBuilder page = new StringBuilder();
int pageID = 1;
int StartpageID = 1;
int TenpageID = 1;
if (!String.IsNullOrEmpty(Request["page"])) Int32.TryParse(Request["page"], out pageID);
if (!String.IsNullOrEmpty(Request["Startpage"])) Int32.TryParse(Request["Startpage"], out StartpageID);
if (!String.IsNullOrEmpty(Request["tenpage"])) Int32.TryParse(Request["tenpage"], out TenpageID);
if (pageID < 1) pageID = 1;
if (pageID > pds.PageCount) pageID = pds.PageCount;
StringBuilder parStr = getParmHT(parmHt);
if (!parStr.Equals(""))
{
page = page.Append(" <div class='pagesL'>");
page = page.Append(" <a href='" + parStr + "page=1&tenpage=1'>第一页 </a> | ");
page = page.Append(" <a href='" + parStr + "page=" + pds.PageCount.ToString() + "&tenpage=" + Convert.ToString(Math.Floor(Convert.ToDouble(pds.PageCount / 10)) + 1) + "'>最后一页 </a>");
page = page.Append(" </div>");
page = page.Append(" <div class='pages'>");
//按照十页一分来处理
if (pageID > 10)
{
page = page.Append(" <a href='" + parStr + "page=" + Convert.ToString(TenpageID - 10) + "&tenpage=" + Convert.ToString(TenpageID - 1) + "' >上十页 </a>");
}
if (pageID <= TenpageID * 10)
{
//范围内
for (int i = (TenpageID - 1) * 10 + 1; i <= (TenpageID * 10 > pds.PageCount ? pds.PageCount : 10); i++)
{
if (i == pageID)
{
page = page.Append(" <span>" + Convert.ToString(i) + " </span>");
}
else
{
page = page.Append(" <a href='" + parStr + "page=" + Convert.ToString(i) + "&tenpage=" + Convert.ToString(TenpageID) + "'>" + Convert.ToString(i) + " </a>");
}
}
}
if (TenpageID * 10 < pds.PageCount)
{
page = page.Append(" <a href='" + parStr + "page=" + Convert.ToString(TenpageID + 10) + "&tenpage=" + Convert.ToString(TenpageID + 1) + "' >下十页 </a>");
}
page = page.Append(" </div> <div class='clear'> </div>");
}
return page;
}
}
}
{
if (!Page.IsPostBack)
{
this.Newfillgv();
}
}
public void Newfillgv()
{
SqlConnection scon = new SqlConnection(EP.GetConStr()); //调用Web.config连接数据库
scon.Open();//打开数据库连接
string SqlStr = "select * from News order by time"; //数据库连接字符串
SqlDataAdapter da = new SqlDataAdapter(SqlStr, scon);
DataSet ds = new DataSet();
da.Fill(ds, "Table");
PagedDataSource objPage = new PagedDataSource();//创建分页类
objPage.DataSource = ds.Tables["Table"].DefaultView;//设置数据源
objPage.AllowPaging = true;
objPage.PageSize = 8;
if (Request.QueryString["Page"] != null)
{
CurPage = Convert.ToInt32(Request.QueryString["Page"]);
CurPage = Math.Min(CurPage, objPage.PageCount);
CurPage = Math.Max(CurPage, 1);
}
else
CurPage = 1;
objPage.CurrentPageIndex = CurPage - 1;
TotalPage = objPage.PageCount;
Tnum = objPage.DataSourceCount;
EachPage = objPage.Count;
lblCurPage.Text = "第 " + CurPage.ToString() + " / " + TotalPage.ToString() + " 页";
lblTnum.Text = "共: " + Tnum + " 条记录";
lblEachPage.Text = "每页有: " + EachPage.ToString() + " 条记录";
if (objPage.CurrentPageIndex != 0)
lnkFirst.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(1);
if (objPage.CurrentPageIndex != TotalPage - 1)
lnkLast.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(TotalPage);
if (!objPage.IsFirstPage)
lnkPrev.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(CurPage - 1);
if (!objPage.IsLastPage)
lnkNext.NavigateUrl = Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(CurPage + 1);
DlNew.DataSource = objPage;
DlNew.DataBind();
}
#region Web 窗体设计器生成的代码
override protected void OnInit(EventArgs e)
{
//
// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。
//
InitializeComponent();
base.OnInit(e);
}
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
}
#endregion
protected void btnPage_Click(object sender, System.EventArgs e)
{
int PageNum = 0;
if (!Request.Form["txtPage"].Equals(""))
PageNum = Convert.ToInt32(Request.Form["txtPage"]);
if (PageNum <= 0 || PageNum > TotalPage)
Response.Redirect(Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(1));
else
Response.Redirect(Request.CurrentExecutionFilePath + "?Page=" + Convert.ToString(PageNum));
}
自己修改下连接数据库的代码....
