一个ASP.NET的进度条
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<DIVid="Lay1" style="Z-INDEX: 1; LEFT: 1%; VISIBILITY: hidden; WIDTH: 99%;CURSOR: crosshair; POSITION: absolute; TOP: 32px; HEIGHT: 95%;BACKGROUND-COLOR: #ffffff"><FONTface="宋体"></FONT><FONT face="宋体"></FONT><FONTface="宋体"></FONT><FONT face="宋体"></FONT><br>
<b><fontcolor="#800080"size="2"> 正在检索数据,请稍候...</font></b>
<table align="center">
<tr>
<td>
<divstyle="BORDER-RIGHT: black 1px solid; PADDING-RIGHT: 2px; BORDER-TOP:black 1px solid; PADDING-LEFT: 2px; FONT-SIZE: 8pt; PADDING-BOTTOM:2px; BORDER-LEFT: black 1px solid; PADDING-TOP: 2px; BORDER-BOTTOM:black 1px solid"><span id="progress1"> </span>
<spanid="progress2"> </span> <spanid="progress3"> </span> <span id="progress4">
</span> <span id="progress5"> </span> <span id="progress6"> </span>
<spanid="progress7"> </span> <spanid="progress8"> </span> <span id="progress9">
</span> <span id="progress10"> </span> <span id="progress11"> </span>
<spanid="progress12"> </span> <spanid="progress13"> </span><spanid="progress14"> </span><spanid="progress15"> </span>
</div>
</td>
</tr>
</table>
<script language="javascript">
var progressEnd = 15; // set to number of progress <span>'s.
var progressColor = 'blue'; // set to progress bar color
var progressInterval = 300; // set to time between updates (milli-seconds)
var progressAt = progressEnd;
var progressTimer;
function progress_clear() {
for (var i = 1; i <= progressEnd; i++) document.getElementById('progress'+i).style.backgroundColor = 'transparent';
progressAt = 0;
}
function progress_update() {
progressAt++;
if (progressAt > progressEnd) progress_clear();
else document.getElementById('progress'+progressAt).style.backgroundColor = progressColor;
progressTimer = setTimeout('progress_update()',progressInterval);
}
function progress_stop() {
clearTimeout(progressTimer);
progress_clear();
}
//progress_update(); // start progress bar
</script>
</DIV>
2.设置查询按钮属性
'在此处放置初始化页的用户代码
If Not IsPostBack The
but_find.Attributes.Add("onClick", "Lay1.style.visibility='';progress_update();")
End If
End Sub
3.注册javascript脚本
Dim jb As String
jb = "<script language='JavaScript'>" + strValue + "</script>"
objPage.RegisterStartupScript("jdt_ok", jb)
End Sub
4.在查询按钮单击事件中调用。
Private Sub but_find_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles but_find.Click
'查询数据代码
'----------------
Me.scriptjdt(Me, "Lay1.style.visibility='hidden';progress_stop();") '关闭进度条代码
End Sub
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