出处：snooker_li的专栏
最近做一个相册程序频繁的需要分页，所以就想写一个用户控件出来。
代码如下：
AutoPage.ascx页面
<%@ Control Language="c#" AutoEventWireup="false" Codebehind="AutoPage.ascx.cs" Inherits="album.AutoPage" TargetSchema="http://schemas.microsoft.com/intellisense/ie5" %>
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<td valign="middle" height="30">共<asp:label id="lb_ItemCount" ForeColor="Red" runat="server"></asp:label>条记录 </td>
<td valign="middle" height="30"><asp:hyperlink id="hpl_First" runat="server">首页</asp:hyperlink> </td>
<td valign="middle" height="30"><asp:hyperlink id="hpl_Prev" runat="server">上页</asp:hyperlink> </td>
<td valign="middle" height="30">当前<asp:label id="lb_CurrentPage" runat="server"></asp:label>页/共<asp:label id="lb_PageCount" runat="server"></asp:label>页 </td>
<td valign="middle" height="30"><asp:hyperlink id="hpl_Next" runat="server">下页</asp:hyperlink> </td>
<td valign="middle" height="30"><asp:hyperlink id="hpl_Last" runat="server">末页</asp:hyperlink> </td>
<td valign="middle" height="30"><asp:textbox id="txb_Page" runat="server" Width="32px" BorderStyle="Solid" BorderWidth="1px"
BorderColor="Silver"></asp:textbox></td>
<td valign="middle" height="30"><asp:ImageButton id="btn_go" runat="server" ImageUrl="album_images/go.gif"></asp:ImageButton></td>
<td valign="middle" height="30"><asp:label id="lb_url" runat="server" Visible="False"></asp:label><asp:Label id="lb_Params" runat="server" Visible="False"></asp:Label></td>
</tr>
</table>
AutoPage.ascx.cs页面
namespace album
{
using System;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
/// <summary>
/// UC 的摘要说明。
/// </summary>
public class AutoPage : System.Web.UI.UserControl
{
protected System.Web.UI.WebControls.HyperLink hpl_First;
protected System.Web.UI.WebControls.HyperLink hpl_Prev;
protected System.Web.UI.WebControls.HyperLink hpl_Next;
protected System.Web.UI.WebControls.Label lb_CurrentPage;
protected System.Web.UI.WebControls.Label lb_PageCount;
protected System.Web.UI.WebControls.HyperLink hpl_Last;
public int pagesize;
public string PageP;
protected System.Web.UI.WebControls.TextBox txb_Page;
protected System.Web.UI.WebControls.Label lb_url;
protected System.Web.UI.WebControls.Label lb_ItemCount;
public string url;
protected System.Web.UI.WebControls.Label lb_Params;
protected System.Web.UI.WebControls.ImageButton btn_go;
public string Params;
private void Page_Load(object sender, System.EventArgs e)
{
}
public PagedDataSource databind(DataTable dt)
{
lb_url.Text = url;
lb_Params.Text = Params;
//创建分页类
PagedDataSource objPage = new PagedDataSource();
//设置数据源
objPage.DataSource = dt.DefaultView;
//允许分页
objPage.AllowPaging = true;
//设置每页显示的项数
objPage.PageSize = pagesize;
//设置当前页的索引
int CurPage=1;
try
{
CurPage = Convert.ToInt32(PageP);
if (CurPage<1 || CurPage>objPage.PageCount)
{
Response.Redirect(url+"?page=1"+Params);
}
}
catch
{
Response.Redirect(url+"?page=1"+Params);
}
objPage.CurrentPageIndex = CurPage-1;
//显示状态信息
lb_ItemCount.Text = dt.Rows.Count.ToString();
lb_CurrentPage.Text = CurPage.ToString();
lb_PageCount.Text =objPage.PageCount.ToString();
//如果当前页面不是首页
if (!objPage.IsFirstPage)
{
hpl_Prev.NavigateUrl=url + "?Page=" + Convert.ToString(CurPage-1)+Params;
hpl_First.NavigateUrl=url + "?Page=1"+Params;
}
//如果当前页面不是最后一页
if (!objPage.IsLastPage)
{
hpl_Next.NavigateUrl=url+ "?Page=" + Convert.ToString(CurPage+1)+Params;
hpl_Last.NavigateUrl=url + "?Page=" +objPage.PageCount.ToString()+Params;
}
return objPage;
}
#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()
{
this.btn_go.Click += new System.Web.UI.ImageClickEventHandler(this.btn_go_Click);
this.Load += new System.EventHandler(this.Page_Load);
}
#endregion
private void btn_go_Click(object sender, System.Web.UI.ImageClickEventArgs e)
{
Response.Redirect(lb_url.Text+"?Page="+txb_Page.Text+lb_Params.Text);
}
}
}
调用的时候需要设置几个参数pagesize(每页显示数据个数),PageP(传递的分页参数),ParmP(其他的Request.QureyString参数),url(页面地址)
绑定的时候只需要把控件的DataSource=AutoPage1.databind(DataTable变量)
