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用javascript实现(页面正在加载的效果)
摘要: 用javascript实现(页面正在加载的效果)
<tr>
<td>
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
{
/**////
/// WebForm2 的摘要说明。
/// 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("
");
Response.Write("_");
Response.Write("
");
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);
}
/**////
/// 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。
/// 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" %>
HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<head>
WebForm2 <script>
HideWait();
</script>
</head>
<body MS_POSITIONING="GridLayout">
<form id="Form1" method="post" runat="server">
Text="Button">
Label </form>
</body>
</td>
</tr>
</table>
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