用asp.net輕鬆打造功能完備的分頁技術!!!! (轉)[@more@]

用過開發過的人都知道,分頁讓asp程式設計師是一件非常頭痛的事,我在這就來說說用輕鬆打造的分頁技術.

第一步我們在vs.net新建專案,這些我不說了,你自己搞定吧,我在這裡主要貼出重要的程式碼.

1.webform1.

" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="page.WebForm1" %>

WebForm1

" name="vs_targetSchema">


一共記錄共頁第頁	跳轉到第頁

2.webform1.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;
using System.Data.Client;

namespace page
{
///

/// WebForm1 的摘要說明。
///

public class WebForm1 : System.Web.UI.Page
{
protected System.Web.UI.WebControls.Label lblpagecount;
protected System.Web.UI.WebControls.Label lblcurrentindex;
protected System.Web.UI.WebControls.LinkButton first;
protected System.Web.UI.WebControls.LinkButton prev;
protected System.Web.UI.WebControls.LinkButton next;
protected System.Web.UI.WebControls.DataGrid DataGrid1;
protected System.Web.UI.WebControls.TextBox to;
protected System.Web.UI.WebControls.Button go;
protected System.Web.UI.WebControls.Label lblallcount;
protected System.Web.UI.WebControls.LinkButton last;

void Page_Load( sender, System.EventArgs e)
{
// 在此處放置程式碼以初始化頁面
first.Text="最首頁";
prev.Text="前一頁";
next.Text="下一頁";
last.Text="最後頁";
if(!IsPostBack)
{
BindGrid();
}
}

#region Web Form Designer generated code
overr protected void OnInit(EventArgs e)
{
//
// CODEGEN：該是 ASP.NET Web 窗體設計器所必需的。
//
InitializeComponent();
base.OnInit(e);
}

///

/// 設計器支援所需的方法 - 不要使用程式碼編輯器修改
/// 此方法的內容。
///

private void InitializeComponent()
{
this.DataGrid1.PageIndd += new System.Web.UI.WebControls.DataGridPageChangedEventHandler(this.Page_Changed);
this.first.Click += new System.EventHandler(this.btnClick);
this.prev.Click += new System.EventHandler(this.btnClick);
this.next.Click += new System.EventHandler(this.btnClick);
this.last.Click += new System.EventHandler(this.btnClick);
this.go.Click += new System.EventHandler(this.goClick);
this.Load += new System.EventHandler(this.Page_Load);

}
#endregion

void Page_Changed(object , System.Web.UI.WebControls.DataGridPageChangedEventArgs e)
{
DataGrid1.CurrentPageIndex=e.NewPageIndex;
BindGrid();
}
void BindGrid()
{
SqlConnection cn=new SqlConnection("server=localhost;database=pubs;uid=sa;pwd=");
cn.Open();
SqlDataAdapter da=new SqlDataAdapter(" * from authors",cn);
DataSet ds=new DataSet();
da.Fill(ds,"authors");
DataGrid1.DataSource=ds.Tables["authors"].DefaultView;
DataGrid1.DataBind();
cn.Close();
showstate();
}
void showstate()
{
SqlConnection cn=new SqlConnection("server=localhost;database=pubs;uid=sa;pwd=");
cn.Open();
SqlDataAdapter da=new SqlDataAdapter("select * from authors",cn);
DataSet ds=new DataSet();
da.Fill(ds,"authors");
DataTable dt=ds.Tables["authors"];
int count=dt.Rows.Count;
lblallcount.Text=count.ToString();
lblpagecount.Text=DataGrid1.PageCount.ToString();
lblcurrentindex.Text=(DataGrid1.CurrentPageIndex+1).ToString();
}
void btnClick(object sender,System.EventArgs e)
{
string arg=((LinkButton)sender).CommandArgument;
switch(arg)
{
case ("first"):
DataGrid1.CurrentPageIndex=0;
break;
case ("prev"):
if(DataGrid1.CurrentPageIndex>0)
DataGrid1.CurrentPageIndex--;
break;
case ("next"):
if(DataGrid1.CurrentPageIndex DataGrid1.CurrentPageIndex++;
break;
case ("last"):
DataGrid1.CurrentPageIndex=DataGrid1.PageCount-1;
break;
default:
DataGrid1.CurrentPageIndex=Convert.ToInt32(arg);
break;
}
BindGrid();
}

private void goClick(object sender, System.EventArgs e)
{
if(to.Text.Trim()!="")
{
int index=Int32.Parse(to.Text.Trim())-1;
if(index>=0&&index {
DataGrid1.CurrentPageIndex=index;
}
}
BindGrid();
}

}
}

好了,現在這個分頁的web 程式完成了,你去試試.

用asp.net輕鬆打造功能完備的分頁技術!!!! (轉)

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