自定义ascx文件来控制分页(-)（downmoon)

1、moonPage.ascx
<%@ Control Language="c#" AutoEventWireup="false" Codebehind="moonPage.ascx.cs" Inherits="firstcs_03.moonPage" TargetSchema="http://schemas.microsoft.com/intellisense/ie5"% >
<TABLE id="Table1" cellSpacing="1" cellPadding="1" width="98%" border="0">
 <TR>
  <TD align="right"><asp:linkbutton id="FirstPage" runat="server">[首页]</asp:linkbutton>&nbsp;
   <asp:linkbutton id="PrevPage" runat="server">[上页]</asp:linkbutton>&nbsp;
   <asp:linkbutton id="NextPage" runat="server">[下页]</asp:linkbutton>&nbsp;
   <asp:linkbutton id="LastPage" runat="server">[末页]</asp:linkbutton>&nbsp;
   <asp:literal id="Literal1" runat="server" Text="转到第"></asp:literal><asp:textbox id="NewPageIndex" runat="server" Width="31px" CssClass="input1"></asp:textbox><asp:literal id="Literal2" runat="server" Text="页"></asp:literal>&nbsp;
   <asp:button id="NewPageGo" runat="server" Text="Go" CssClass="input1"></asp:button>&nbsp;</TD>
 </TR>
</TABLE>

2、moonPage.ascx.cs

namespace firstcs_03
{
 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>
 ///  moonPage 的摘要说明。
 /// </summary>
 public class moonPage : System.Web.UI.UserControl
 {
  protected System.Web.UI.WebControls.LinkButton FirstPage;
  protected System.Web.UI.WebControls.LinkButton PrevPage;
  protected System.Web.UI.WebControls.LinkButton NextPage;
  protected System.Web.UI.WebControls.LinkButton LastPage;
  protected System.Web.UI.WebControls.Literal Literal1;
  protected System.Web.UI.WebControls.TextBox NewPageIndex;
  protected System.Web.UI.WebControls.Literal Literal2;
  protected System.Web.UI.WebControls.Button NewPageGo;
  protected int currentpage;
  protected int pagesize;
  protected string proc;
  protected System.Web.UI.WebControls.DataGrid datagrid;
  #region　自定义
  public int _CurrentPage
  {
   get
   {
    return currentpage;
   }
   set
   {
    currentpage = value;
   }
  }

  public int _pageSize
  {
   get
   {
    return pagesize;
   }
   set
   {
    pagesize = value;
   }
  }

  public string _proc
  {
   get
   {
    return proc;
   }
   set
   {
    proc = value;
   }
  }

  public DataGrid _datagrid
  {
   get
   {
    return datagrid;
   }
   set
   {
    datagrid = value;
   }
  }

  protected int rowcount;

  #endregion

  private void Page_Load(object sender, System.EventArgs e)
  {
   if(!IsPostBack)
   {
    using(SqlConnection conn = new SqlConnection("uid=sa;pwd=sa;server=localhost;initial catalog=pubs;timeout=90"))
       {
     SqlCommand cmd = new SqlCommand("select count(*) as expr1 from authors",conn);
     cmd.Connection.Open();
     rowcount = (int)cmd.ExecuteScalar();
     cmd.Connection.Close();
     ViewState["rowscount"] = rowcount;
    }
    ViewState["currentpage"] = currentpage;
    FillGrid(proc,currentpage,pagesize,datagrid);
   }
  }

 

  #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.FirstPage.Click += new System.EventHandler(this.FirstPage_Click);
   this.NextPage.Click += new System.EventHandler(this.NextPage_Click);
   this.NewPageGo.Click += new System.EventHandler(this.NewPageGo_Click);
   this.Load += new System.EventHandler(this.Page_Load);

  }
  #endregion
  private void FillGrid(string proc,int currentpage,int pagesize,DataGrid datagrid)
  {
   using(SqlConnection conn = new SqlConnection("Uid=sa;pwd=sa;server=localhost;initial catalog=pubs;timeout=90"))
      {
    SqlCommand cmd = new SqlCommand(proc,conn);
    cmd.CommandType = CommandType.StoredProcedure;
    cmd.Parameters.Add("@CurrentPage",currentpage);
    cmd.Parameters.Add("@PageSize",pagesize);
    cmd.Connection.Open();

    SqlDataReader sdr = cmd.ExecuteReader();
    datagrid.DataSource = sdr;
    datagrid.DataBind();
    sdr.Close();
    cmd.Connection.Close();
   }
  }

  //首页
  private void FirstPage_Click(object sender, System.EventArgs e)
  {
   //disabled首页按钮和上一页按钮
   FirstPage.Enabled = false;
   PrevPage.Enabled = false;   
   currentpage = 0;
   ViewState["currentpage"] = currentpage;
   FillGrid(proc,currentpage,pagesize,datagrid);
   //如果不止一页
   if((int)ViewState["rowscount"]>((int)ViewState["currentpage"]+1)*pagesize)
   {
    NextPage.Enabled = true;
   }
   if((int)ViewState["rowscount"]>((int)ViewState["currentpage"]+1)*pagesize)
   {
    LastPage.Enabled = true;
   }
  }

  //上一页
  private void PrevPage_Click(object sender, System.EventArgs e)
  {

   NextPage.Enabled = true;
   LastPage.Enabled = true;
   currentpage = (int)ViewState["currentpage"]-1;
   ViewState["currentpage"] = currentpage;
   FillGrid(proc,currentpage,pagesize,datagrid);   
   //如果到首页则disabled首页和上一页按钮
   if((int)ViewState["currentpage"]==0)
   {
    PrevPage.Enabled = false;
    FirstPage.Enabled = false;
    //return;
   }
  }

  //下一页
  private void NextPage_Click(object sender, System.EventArgs e)
  {
   ViewState["currentpage"] = (int)ViewState["currentpage"]+1;
   currentpage = (int)ViewState["currentpage"];
   FillGrid(proc,currentpage,pagesize,datagrid);
   PrevPage.Enabled = true;
   FirstPage.Enabled = true;
   //如果已经到了最后一页
   if(((int)ViewState["currentpage"]+1)*pagesize>(int)ViewState["rowscount"])
   {
    NextPage.Enabled = false;
    LastPage.Enabled = false;
   }
  }

  //末页
  private void LastPage_Click(object sender, System.EventArgs e)
  {
   LastPage.Enabled = false;
   NextPage.Enabled = false;
   ViewState["currentpage"] = (int)Math.Ceiling((int)ViewState["rowscount"]/pagesize);
   currentpage = (int)ViewState["currentpage"];
   FillGrid(proc,currentpage,pagesize,datagrid);
   //如果有不止一页的纪录
   if((int)ViewState["currentpage"]>1)
   {
    FirstPage.Enabled = true;
    PrevPage.Enabled = true;
   }
    //如果只有一页的纪录
   else
   {
    FirstPage.Enabled = false;
    PrevPage.Enabled = false;
   }
  }
  //跳转
  private void NewPage_Go(string i)
  {
   try
   {
    int PageIndex = Int32.Parse(i);
    if (PageIndex<=0)
    {
     PageIndex = 0;
    }
    else
    {
     if(PageIndex>(int)Math.Ceiling((int)ViewState["rowscount"]/pagesize))
     {
      PageIndex = (int)Math.Ceiling((int)ViewState["rowscount"]/pagesize);
     }
     else
     {
      PageIndex--;
     }
    }
    //简单起见,将所有的linkbutton全部改为enable=true
    FirstPage.Enabled = true;
    NextPage.Enabled = true;
    LastPage.Enabled = true;
    PrevPage.Enabled = true;
    ViewState["currentpage"] = PageIndex;
    FillGrid(proc,(int)ViewState["currentpage"],pagesize,datagrid);
   }
   catch(Exception)
   {
    return;
   }
  }

  private void NewPageGo_Click(object sender, System.EventArgs e)
  {
   NewPage_Go(NewPageIndex.Text.Trim());
  }

 }
}

 

 

引用页面：
page_Ascx.aspx：

<%@ Page language="c#" Codebehind="page_Ascx.aspx.cs" AutoEventWireup="false" Inherits="firstcs_03.page_Ascx" %>
<%@ Register TagPrefix="uc1" TagName="moonPage" Src="moonPage.ascx" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
 <HEAD>
  <title>page_Ascx</title>
  <meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
  <meta name="CODE_LANGUAGE" Content="C#">
  <meta name="vs_defaultClientScript" content="JavaScript">
  <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5 ">
  <link href="css.css" _fcksavedurl=""css.css"" _fcksavedurl=""css.css"" rel="stylesheet" type="text/css">
 </HEAD>
 <body>
  <form id="PageForm" method="post" runat="server">
   <asp:DataGrid id="DataGrid1" runat="server" AllowCustomPaging="True" AllowPaging="True">
    <PagerStyle Visible="False"></PagerStyle>
   </asp:DataGrid><FONT face="宋体"><BR>
   </FONT>
   <asp:Repeater id="Repeater1" runat="server">
    <HeaderTemplate>
     Repeater控件的标头模版<br>
    </HeaderTemplate>
    <ItemTemplate>
     名称：<%# DataBinder.Eval(Container.DataItem,"ProductName") %><br>
     单价：<%# DataBinder.Eval(Container.DataItem,"UnitPrice") %><br>
    </ItemTemplate>
    <AlternatingItemTemplate>
     名称：<font color="red"><%# DataBinder.Eval(Container.DataItem,"ProductName") %></font><br>
     单价：<font color="red"><%# DataBinder.Eval(Container.DataItem,"UnitPrice") %></font><br>
    </AlternatingItemTemplate>
    <SeparatorTemplate>
     <hr>
    </SeparatorTemplate>
    <FooterTemplate>
     Repeater控件的页脚模版
    </FooterTemplate>
   </asp:Repeater>
   <asp:Panel id="Panel1" runat="server" Width="634px">
    <uc1:moonPage id="pc" runat="server"></uc1:moonPage>
   </asp:Panel><FONT face="宋体"></FONT>
  </form>
 </body>
</HTML>

 

page_Ascx.aspx.cs

using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Web;
using System.Web.SessionState;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;

namespace firstcs_03
{
 /// <summary>
 /// page_Ascx 的摘要说明。
 /// </summary>
 public class page_Ascx : System.Web.UI.Page
 {
  protected System.Web.UI.WebControls.DataGrid DataGrid1;
  protected System.Web.UI.WebControls.Panel Panel1;
  protected System.Web.UI.WebControls.Repeater Repeater1;

  protected firstcs_03.moonPage pc;
 
  private void Page_Load(object sender, System.EventArgs e)
  {
   //if(!IsPostBack)
   //{
   pc._CurrentPage = 0;
   pc._datagrid = DataGrid1;
   pc._pageSize =10;
   pc._proc = "Page_Change";

//   pc._CurrentPage = 0;
//   pc._datagrid = (DataGrid)Repeater1;
//   pc._pageSize =7;
//   pc._proc = "Page_Change";
   //}
  }

  #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.Load += new System.EventHandler(this.Page_Load);

  }
  #endregion
 }
}