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Asp.Net实现进度条效果源码

作者:xiaosong  日期:06-24
其效果如下:

首先,在HTML文档中加入如下代码:
<div>
<table class="statusTable">
<tr>
<td id="progress1"> </td>
<td id="progress2"> </td>
<td id="progress3"> </td>
<td id="progress4"> </td>
<td id="progress5"> </td>
<td id="progress6"> </td>
<td id="progress7"> </td>
<td id="progress8"> </td>
<td id="progress9"> </td>
<td id="progress10"> </td>
</tr>
</table>
<asp:Label ID="Label1" runat="server" ForeColor="Red" Text="0"></asp:Label>
</div>
<div>
<input id="btnRequest" type="button" value="请求" onclick="Request()" />
<input id="btnStop" type="button" value="停止" disabled="disabled" onclick="Stop()" />
</div>
Js部分加入如下Js代码:
<script language="javascript" type="text/javascript">
var idx = 0;
var progressTimer;
var progressInterval = 1000;
function Request()
{
document.getElementById("btnStop").disabled = "";
document.getElementById("btnRequest").disabled = "disabled";
if(idx >= 10)
{
Clear();
return;
}
var arg = idx;
<%= ClientScript.GetCallbackEventReference(this, "arg", "GetMsgBack",null) %>;
idx++;
progressTimer = setTimeout('Request()',progressInterval);
}
function GetMsgBack(result)
{
document.getElementById('progress'+idx).style.backgroundColor = 'blue';
var status = Number(result) * 10;
document.getElementById("Label1").innerHTML = status + "%";
}
function Stop()
{
clearTimeout(progressTimer);
Clear();
}
function Clear()
{
idx = 0;
document.getElementById("btnStop").disabled = "disabled";
document.getElementById("btnRequest").disabled = "";
document.getElementById("Label1").innerHTML = "0";
for (var i = 1; i <= 10; i++)
document.getElementById('progress' + i).style.backgroundColor = 'transparent';
}
</script>
css样式文件中加入如下代码:
.statusTable
{
width:100px;
border:solid 1px #000000;
padding-bottom:0px;
margin-bottom:0px;
}
.statusTable td
{
height:20px;
}
Asp.Net服务端实现回调代码如下:
public partial class DigitStatus : System.Web.UI.Page, ICallbackEventHandler
{
private string AspEventArgs;
protected void Page_Load(object sender, EventArgs e)
{
}
public void RaiseCallbackEvent(string EventArgs)
{
AspEventArgs = EventArgs;
}
public string GetCallbackResult()
{
int i = Convert.ToInt32(AspEventArgs);
i++;
return i.ToString();
}
}
这样,一个简易的进度条就实现了,运行即可得到如页首处的效果。
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