VB.NET进度条的方法代码

　　<DIV id="Lay1" style="Z-INDEX: 1; LEFT: 1%; VISIBILITY: hidden; WIDTH: 99%; CURSOR: crosshair; POSITION: absolute; TOP: 32px; HEIGHT: 95%; BACKGROUND-COLOR: #ffffff"><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><br>

　　<b><font color="#800080" size="2">      & nbsp;          正在检索数据，请稍候...</font></b>

　　<table align="center">

　　<tr>

　　<td>

　　<div style="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>

　　<span id="progress2"> </span> <span id="progress3"> </span> <span id="progress4">

　　</span> <span id="progress5"> </span> <span id="progress6"> </span>

　　<span id="progress7"> </span> <span id="progress8"> </span> <span id="progress9">

　　</span> <span id="progress10"> </span> <span id="progress11"> </span>

　　<span id="progress12"> </span> <span id="progress13"> </span><span id="progress14"> </span><span id="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>

　　Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

　　'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

　　Public Sub scriptjdt(ByVal objPage As System.Web.UI.Page, ByVal strValue As String)

　　Dim jb As String

　　jb = "<script language='JavaScript'>" + strValue + "</script>"

　　objPage.RegisterStartupScript("jdt_ok", jb)

　　End Sub

　　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