1.创建进度条：

复制代码 代码如下:

<DIV id="Lay1"><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><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>

2.设置查询按钮属性

复制代码 代码如下:

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

3.注册javascript脚本

复制代码 代码如下:

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

4.在查询按钮单击事件中调用

复制代码 代码如下:

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