ASP.NET實現進度條
在網上查閱了很多相關資料,參照對比一番後自己整理了一下,做了個小例子。能夠實現根據後臺資料載入的進度在前臺動態更新進度條、進度條在頁面居中顯示、在進度條內顯示百分比,完成進度後隱藏進度條。個人感覺還是有一定的參考價值,貼出來先。
建立一個WEB工程,新增新項->HTML頁面,命名為ProgressBar.htm,內容如下:
DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" id="mainWindow">
<head>
<title>無標題頁title>
<script language="javascript">
function SetPorgressBar(pos)
{
//設定進度條居中
var screenHeight = window["mainWindow"].offsetHeight;
var screenWidth = window["mainWindow"].offsetWidth;
ProgressBarSide.style.width = Math.round(screenWidth / 2);
ProgressBarSide.style.left = Math.round(screenWidth / 4);
ProgressBarSide.style.top = Math.round(screenHeight / 2);
ProgressBarSide.style.height = "21px";
ProgressBarSide.style.display = "";
//設定進度條百分比
ProgressBar.style.width = pos + "%";
ProgressText.innerHTML = pos + "%";
}
//完成後隱藏進度條
function SetCompleted()
{
ProgressBarSide.style.display = "none";
}
script>
head>
<body>
<div id="ProgressBarSide" style="position:absolute;height:21x;width:100px;color:Silver;border-width:1px;border-style.:Solid;display:none">
<div id="ProgressBar" style="position:absolute;height:21px;width:0%;background-color:#3366FF">div>
<div id="ProgressText" style="position:absolute;height:21px;width:100%;text-align:center">div>
div>
body>
html>
<html xmlns="http://www.w3.org/1999/xhtml" id="mainWindow">
<head>
<title>無標題頁title>
<script language="javascript">
function SetPorgressBar(pos)
{
//設定進度條居中
var screenHeight = window["mainWindow"].offsetHeight;
var screenWidth = window["mainWindow"].offsetWidth;
ProgressBarSide.style.width = Math.round(screenWidth / 2);
ProgressBarSide.style.left = Math.round(screenWidth / 4);
ProgressBarSide.style.top = Math.round(screenHeight / 2);
ProgressBarSide.style.height = "21px";
ProgressBarSide.style.display = "";
//設定進度條百分比
ProgressBar.style.width = pos + "%";
ProgressText.innerHTML = pos + "%";
}
//完成後隱藏進度條
function SetCompleted()
{
ProgressBarSide.style.display = "none";
}
script>
head>
<body>
<div id="ProgressBarSide" style="position:absolute;height:21x;width:100px;color:Silver;border-width:1px;border-style.:Solid;display:none">
<div id="ProgressBar" style="position:absolute;height:21px;width:0%;background-color:#3366FF">div>
<div id="ProgressText" style="position:absolute;height:21px;width:100%;text-align:center">div>
div>
body>
html>
後臺程式碼,Default.aspx.cs:
using System;
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Threading;
using System.IO;
public partial class _Default : System.Web.UI.Page
{
private void beginProgress()
{
//根據ProgressBar.htm顯示進度條介面
string templateFileName = Path.Combine(Server.MapPath("."), "ProgressBar.htm");
StreamReader reader = new StreamReader(@templateFileName,System.Text.Encoding.GetEncoding("GB2312"));
string html = reader.ReadToEnd();
reader.Close();
Response.Write(html);
Response.Flush();
}
private void setProgress(int percent)
{
string jsBlock = "";
Response.Write(jsBlock);
Response.Flush();
}
private void finishProgress()
{
string jsBlock = "";
Response.Write(jsBlock);
Response.Flush();
}
private void Page_Load(object sender, System.EventArgs e)
{
beginProgress();
for (int i = 1; i <= 100; i++)
{
setProgress(i);
//此處用執行緒休眠代替實際的操作,如載入資料等
System.Threading.Thread.Sleep(50);
}
finishProgress();
}
}
using System.Data;
using System.Configuration;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Threading;
using System.IO;
public partial class _Default : System.Web.UI.Page
{
private void beginProgress()
{
//根據ProgressBar.htm顯示進度條介面
string templateFileName = Path.Combine(Server.MapPath("."), "ProgressBar.htm");
StreamReader reader = new StreamReader(@templateFileName,System.Text.Encoding.GetEncoding("GB2312"));
string html = reader.ReadToEnd();
reader.Close();
Response.Write(html);
Response.Flush();
}
private void setProgress(int percent)
{
string jsBlock = "";
Response.Write(jsBlock);
Response.Flush();
}
private void finishProgress()
{
string jsBlock = "";
Response.Write(jsBlock);
Response.Flush();
}
private void Page_Load(object sender, System.EventArgs e)
{
beginProgress();
for (int i = 1; i <= 100; i++)
{
setProgress(i);
//此處用執行緒休眠代替實際的操作,如載入資料等
System.Threading.Thread.Sleep(50);
}
finishProgress();
}
}
前臺頁面程式碼在此省略,可以放置任意控制元件。
轉自:http://blog.csdn.net/reonlyrun/archive/2006/12/27/1464372.aspx來自 “ ITPUB部落格 ” ,連結:http://blog.itpub.net/12639172/viewspace-620522/,如需轉載,請註明出處,否則將追究法律責任。
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