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用javascript实现(页面正在加载的效果)

 2006-06-15 19:52:35 来源:WEB开发网   
核心提示:代码文件:using System;using System.Collections;using System.ComponentModel;using System.Data;using System.Drawing;using System.Web;using System.Web.sessionState;usi

代码文件:

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.Threading;
namespace AjaxTest
{
   /**//// <summary>
   /// WebForm2 的摘要说明。
   /// </summary>
   public class WebForm2 : System.Web.UI.Page
   {
     PRotected System.Web.UI.WebControls.Button Button1;
     protected System.Web.UI.WebControls.Label Label1;
  
     private void Page_Load(object sender, System.EventArgs e)
     {
       Response.Write("<div id='mydiv' >");
       Response.Write("_");
       Response.Write("</div>");
       Response.Write("<script>mydiv.innerText = '';</script>");
       Response.Write("<script language=javascript>;");
       Response.Write("var dots = 0;var dotmax = 10;function ShowWait()");
       Response.Write("{var output; output = '正在装载页面';dots++;if(dots>=dotmax)dots=1;");
       Response.Write("for(var x = 0;x < dots;x++){output += '·';}mydiv.innerText =  output;}");
       Response.Write("function StartShowWait(){mydiv.style.visibility = 'visible'; ");
       Response.Write("window.setInterval('ShowWait()',1000);}");
       Response.Write("function HideWait(){mydiv.style.visibility = 'hidden';");
       Response.Write("window.clearInterval();}");
       Response.Write("StartShowWait();</script>");
       Response.Flush();//这一句是最关键的
     }

   private void Button1_Click(object sender, System.EventArgs e)
     {
       //当点击按钮时,假设请求需要较长时间(这里设置为10秒)
       System.Threading.Thread.Sleep(10000);
       this.Label1.Text = "终于加载完成啦";
     }

   Web 窗体设计器生成的代码#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.Button1.Click += new System.EventHandler(this.Button1_Click);
       this.Load += new System.EventHandler(this.Page_Load);

   }
     #endregion


   }
}


页面文件:
<%@ Page language="c#" Codebehind="WebForm2.aspx.cs" AutoEventWireup="false" Inherits="AjaxTest.WebForm2" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
   <HEAD>
     <title>WebForm2</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">
     <script>
     HideWait();
     </script>
   </HEAD>
   <body MS_POSITIONING="GridLayout">
     <form id="Form1" method="post" runat="server">
       <FONT face="宋体">
         <asp:Button id="Button1" style="Z-INDEX: 101; LEFT: 480px; POSITION: absolute; TOP: 200px" runat="server"
           Text="Button"></asp:Button>
         <asp:Label id="Label1" style="Z-INDEX: 102; LEFT: 632px; POSITION: absolute; TOP: 240px" runat="server">Label</asp:Label></FONT>
     </form>
   </body>
</HTML>
http://fanrsh.cnblogs.com/archive/2006/06/14/425888.html

Tags:javascript 实现 页面

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