关于速度的问题，在线等，立即结贴

我的程序中，比如说在内网发送EMAIL，在一个页面中有一个按纽是选择收件人，点一下，弹出另一个页面，在这个页面中选择下拉框中的部门和人员后，将选中的人员返回到上个页面中，就是这个功能中，在选择下拉框中的部门和人员时，速度很慢，请问是什么原因

23 个解决方案

#1

这个选择速度慢能重复么？这个下拉框中的数据多么？

#2

可以重复，有20个部门，选择部门后将部门的人员放在；一个列表框内

#3

是不是指事件回发执行速度很慢,曾经有遇到过这个的问题.后来发现是缓存的关系,比如ViewState,太大了,页面OnLoad事件执行得很慢.你测试一下你的ViewState会不会大?

#4

怎么测试？

#5

你页面里还有别的东西么？譬如CSS里的setExpression什么的？

#6

我没有用样式表

#7

我的OnLoad事件只执行一次，这个速度不慢，就是选择下拉框的时候，下拉框的人员出来太慢了

#8

浏览器->查看->查看源文件，搜索VIEWSTATE，看看是不是非常大。像下面这个大小算是正常的:

<input type="hidden" name="__VIEWSTATE" value="dDwxMDUzMjkwODY7dDw7bDxpPDE+Oz47bDx0PDtsPGk8MT47aTwyPjtpPDc+O2k8OD47aTw5PjtpPDEwPjtpPDExPjtpPDEyPjs+O2w8dDxwPHA8bDxUZXh0Oz47bDwyMDA1LjEwLjA2Oz4+Oz47Oz47dDxwPHA8bDxUZXh0Oz47bDzmmJ/mnJ/lm5s7Pj47Pjs7Pjt0PEAwPHA8cDxsPFNEOz47bDxsPFN5c3RlbS5EYXRlVGltZSwgbXNjb3JsaWIsIFZlcnNpb249MS4wLjUwMDAuMCwgQ3VsdHVyZT1uZXV0cmFsLCBQdWJsaWNLZXlUb2tlbj1iNzdhNWM1NjE5MzRlMDg5PDIwMDUtMTAtMDY+Oz47Pj47Pjs7Ozs7Ozs7Ozs+Ozs+O3Q8cDxwPGw8SW1hZ2VVcmw7PjtsPGYvaW1nL2RlcDIuZ2lmOz4+Oz47Oz47dDxwPHA8bDxJbWFnZVVybDs+O2w8Zi9pbWcvZGVwNC5naWY7Pj47Pjs7Pjt0PHA8cDxsPEltYWdlVXJsOz47bDxmL2ltZy9zYmR0LmdpZjs+Pjs+Ozs+O3Q8QDA8cDxwPGw8VmlzaWJsZTs+O2w8bzxmPjs+Pjs+Ozs7Ozs7Ozs7Oz47Oz47dDxAMDxwPHA8bDxQYWdlQ291bnQ7XyFJdGVtQ291bnQ7XyFEYXRhU291cmNlSXRlbUNvdW50O0RhdGFLZXlzOz47bDxpPDE+O2k8MTE+O2k8MTE+O2w8Pjs+Pjs+Ozs7Ozs7Ozs7Oz47bDxpPDA+Oz47bDx0PDtsPGk8MT47aTwyPjtpPDM+O2k8ND47aTw1PjtpPDY+O2k8Nz47aTw4PjtpPDk+O2k8MTA+O2k8MTE+Oz47bDx0PDtsPGk8MD47aTwxPjtpPDI+O2k8Mz47aTw0PjtpPDU+O2k8Nj47aTw3PjtpPDg+Oz47bDx0PDtsPGk8MD47PjtsPHQ8QDxNRjs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPE1GODA4NDs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPEI3MzctNzAwOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA85q2m5aS35bGxOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8MDc0MDs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPDA3MzI7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDzliLDovr47Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDwwODIwOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA85Y6m6ZeoOz47Oz47Pj47Pj47dDw7bDxpPDA+O2k8MT47aTwyPjtpPDM+O2k8ND47aTw1PjtpPDY+O2k8Nz47aTw4Pjs+O2w8dDw7bDxpPDA+Oz47bDx0PEA8TVU7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDxNVTU1MzI7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDxNRDkwOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA85q2m5aS35bGxOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8MDg0MDs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPDA4MzQ7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDzliLDovr47Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDwwOTQwOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA86Jm55qGlOz47Oz47Pj47Pj47dDw7bDxpPDA+O2k8MT47aTwyPjtpPDM+O2k8ND47aTw1PjtpPDY+O2k8Nz47aTw4Pjs+O2w8dDw7bDxpPDA+Oz47bDx0PEA8TUY7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDxNRjgzNjc7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDxCNzM3LTMwMDs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPOatpuWkt+WxsTs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPDA4NTU7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDwwODUyOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA85Yiw6L6+Oz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8MTAwNTs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPOW5v+W3njs+Ozs+Oz4+Oz4+O3Q8O2w8aTwwPjtpPDE+O2k8Mj47aTwzPjtpPDQ+O2k8NT47aTw2PjtpPDc+O2k8OD47PjtsPHQ8O2w8aTwwPjs+O2w8dDxAPE1GOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8TUY4MTE1Oz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8QjczNy03MDA7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDzmrablpLflsbE7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDwwOTQwOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8MDkzMjs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPOi1t+mjnjs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPDExNDA7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDzljJfkuqw7Pjs7Pjs+Pjs+Pjt0PDtsPGk8MD47aTwxPjtpPDI+O2k8Mz47aTw0PjtpPDU+O2k8Nj47aTw3PjtpPDg+Oz47bDx0PDtsPGk8MD47PjtsPHQ8QDxDQTs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPENBMTgwNjs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPEI3MzctMzAwOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA85q2m5aS35bGxOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8MTA0NTs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPFxlOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8XGU7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDwxMzA1Oz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA85YyX5LqsOz47Oz47Pj47Pj47dDw7bDxpPDA+O2k8MT47aTwyPjtpPDM+O2k8ND47aTw1PjtpPDY+O2k8Nz47aTw4Pjs+O2w8dDw7bDxpPDA+Oz47bDx0PEA8TUY7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDxNRjgxMjE7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDxCNzM3LTMwMDs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPOatpuWkt+WxsTs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPDE0MjA7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDxcZTs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPFxlOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8MTYzMDs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPOWMl+S6rDs+Ozs+Oz4+Oz4+O3Q8O2w8aTwwPjtpPDE+O2k8Mj47aTwzPjtpPDQ+O2k8NT47aTw2PjtpPDc+O2k8OD47PjtsPHQ8O2w8aTwwPjs+O2w8dDxAPE1GOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8TUY4MjgxOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8QjczNy03MDA7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDzmrablpLflsbE7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDwxNDI1Oz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8XGU7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDxcZTs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPDE2MjU7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDzopb/lrok7Pjs7Pjs+Pjs+Pjt0PDtsPGk8MD47aTwxPjtpPDI+O2k8Mz47aTw0PjtpPDU+O2k8Nj47aTw3PjtpPDg+Oz47bDx0PDtsPGk8MD47PjtsPHQ8QDxNRjs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPE1GODExMzs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPEI3MzctMzAwOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA85q2m5aS35bGxOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8MTYyNTs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPFxlOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8XGU7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDwxODI1Oz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA85YyX5LqsOz47Oz47Pj47Pj47dDw7bDxpPDA+O2k8MT47aTwyPjtpPDM+O2k8ND47aTw1PjtpPDY+O2k8Nz47aTw4Pjs+O2w8dDw7bDxpPDA+Oz47bDx0PEA8TUY7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDxNRjgzNDk7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDxCNzM3LTcwMDs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPOatpuWkt+WxsTs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPDE3NTA7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDxcZTs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPFxlOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8MTkyMDs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPOmDkeW3njs+Ozs+Oz4+Oz4+O3Q8O2w8aTwwPjtpPDE+O2k8Mj47aTwzPjtpPDQ+O2k8NT47aTw2PjtpPDc+O2k8OD47PjtsPHQ8O2w8aTwwPjs+O2w8dDxAPE1GOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8TUY4NTUxOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8QjczNy0zMDA7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDzmrablpLflsbE7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDwyMDUwOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8XGU7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDxcZTs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPDIxNTA7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDzombnmoaU7Pjs7Pjs+Pjs+Pjt0PDtsPGk8MD47aTwxPjtpPDI+O2k8Mz47aTw0PjtpPDU+O2k8Nj47aTw3PjtpPDg+Oz47bDx0PDtsPGk8MD47PjtsPHQ8QDxNRjs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPE1GODA4Mjs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPEI3MzctNzAwOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA85q2m5aS35bGxOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8MjMwMDs+Ozs+Oz4+O3Q8O2w8aTwwPjs+O2w8dDxAPFxlOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA8XGU7Pjs7Pjs+Pjt0PDtsPGk8MD47PjtsPHQ8QDwyMzQwOz47Oz47Pj47dDw7bDxpPDA+Oz47bDx0PEA85Y6m6ZeoOz47Oz47Pj47Pj47Pj47Pj47Pj47Pj47bDxyZGlBcnI7cmRpQXJyO3JkaURlcDtyZGlDaXR5O3JkaUNpdHk7cmRpVGltZTs+PhCgvyluGKFf0x5hRyQirfHPvIef" />

#9

应该是客户端的原因，慢的可能性不会太多的，一是数据太多，二是网页需要动态计算，譬如引发脚本，特殊效果，或者CSS的setExpression等，建议把该页面在一个浏览器里单独打开，是不是还是慢，如果是，请把你的HTML码全部贴出来，包括CSS等

#10

HTML代码如下：
<%@ Page SmartNavigation="True" language="c#" Codebehind="mailzjsr.aspx.cs" AutoEventWireup="false" Inherits="goffice3._0.publics.mailzjsr" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>选择邮件接收人</title>
<meta content="Microsoft Visual Studio 7.0" name="GENERATOR">
<meta content="C#" name="CODE_LANGUAGE">
<meta content="JavaScript" name="vs_defaultClientScript">
<meta content="http://schemas.microsoft.com/intellisense/ie5" name="vs_targetSchema">
</HEAD>
<body leftMargin="0" topMargin="0" MS_POSITIONING="GridLayout">
<form id="mailzjsr" method="post" runat="server">
<TABLE id="Table1" height="400" cellSpacing="0" cellPadding="0" border="0" runat="server">
<TR>
<TD style="BORDER-BOTTOM: #cfd8ea 1px solid" align="center" bgColor="#f2f6ff" colSpan="3"
height="74"><FONT face="宋体"><font color="black"><b>---- 请 选 择 人 员 ----
<asp:listbox id="ListBox1" runat="server" Visible="False" Width="38px"></asp:listbox></b></font></FONT></TD>
</TR>
<TR>
<TD style="HEIGHT: 127px" colSpan="3">
<TABLE id="Table2" style="WIDTH: 398px; HEIGHT: 128px" cellSpacing="0" cellPadding="0"
width="528" border="0" runat="server">
<TR align="center">
<TD style="BORDER-RIGHT: #ddd7bc 1px solid" width="40%" bgColor="#fffef2"><FONT face="宋体">
<table style="WIDTH: 80%; HEIGHT: 100%" cellSpacing="0" cellPadding="0" border="0">
<tr height="20%" width="100%">
<td><asp:dropdownlist id="dropdlblr" runat="server" AutoPostBack="True"></asp:dropdownlist></td>
</tr>
<tr height="80%" width="100%">
<td width="100%" height="80%"><asp:listbox id="SelBl" runat="server" Width="100%" Height="137px" SelectionMode="Multiple"></asp:listbox></td>
</tr>
</table>
</FONT>
</TD>
<TD style="WIDTH: 20%"><FONT face="宋体">
<table height="100%" cellSpacing="0" cellPadding="0" border="0">
<tr align="center">
<td><asp:imagebutton id="ButSel" runat="server" CausesValidation="False" ImageUrl="../images/img_xuanze.gif"></asp:imagebutton></td>
</tr>
<tr>
<td></td>
</tr>
<tr align="center">
<td><asp:imagebutton id="ButSelAll" runat="server" ImageUrl="../images/img_xuanzeall.gif"></asp:imagebutton></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td><asp:imagebutton id="ButDel" runat="server" ImageUrl="../images/img_del.gif"></asp:imagebutton></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td><asp:imagebutton id="ButDelAll" runat="server" ImageUrl="../images/img_delall.gif"></asp:imagebutton></td>
</tr>
</table>
</FONT>
</TD>
<TD style="BORDER-LEFT: #bcddc7 1px solid" width="40%" bgColor="#f6fef7"><FONT face="宋体">
<table style="WIDTH: 80%; HEIGHT: 100%" cellSpacing="0" cellPadding="0" border="0">
<tr height="20%" width="100%">
<td><asp:label id="Label2" runat="server">
<font color="red">已选择人员</font>
</asp:label></td>
</tr>
<tr height="80%" width="100%">
<td width="100%" height="80%"><asp:listbox id="SureLb" runat="server" Width="100%" Height="137px" SelectionMode="Multiple"
ForeColor="Red"></asp:listbox></td>
</tr>
</table>
</FONT>
</TD>
</TR>
<TR align="center">
<TD style="BORDER-RIGHT: #ddd7bc 1px solid" width="40%" bgColor="#fffef2"><FONT face="宋体">
<table style="WIDTH: 80%; HEIGHT: 100%" cellSpacing="0" cellPadding="0" border="0">
<tr height="20%" width="100%">
<td><asp:label id="Label1" runat="server" Width="80px" Height="6px" ForeColor="red">请选择组</asp:label></td>
</tr>
<tr height="80%" width="100%">
<td width="100%" height="80%"><asp:listbox id="listgroup" runat="server" Width="100%" Height="137px" SelectionMode="Multiple"></asp:listbox></td>
</tr>
</table>
</FONT>
</TD>
<TD style="WIDTH: 20%"><FONT face="宋体">
<table height="100%" cellSpacing="0" cellPadding="0" border="0">
<tr>
<td style="HEIGHT: 19px"><asp:imagebutton id="groupsel" runat="server" CausesValidation="False" ImageUrl="../images/img_xuanze.gif"></asp:imagebutton></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td><asp:imagebutton id="groupselall" runat="server" ImageUrl="../images/img_xuanzeall.gif"></asp:imagebutton></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td><asp:imagebutton id="groupdel" runat="server" ImageUrl="../images/img_del.gif"></asp:imagebutton></td>
</tr>
<tr>
<td></td>
</tr>
<tr>
<td><asp:imagebutton id="groupdelall" runat="server" ImageUrl="../images/img_delall.gif"></asp:imagebutton></td>
</tr>
</table>
</FONT>
</TD>
<TD style="BORDER-LEFT: #bcddc7 1px solid" width="40%" bgColor="#f6fef7"><FONT face="宋体">
<table style="WIDTH: 80%; HEIGHT: 100%" cellSpacing="0" cellPadding="0" border="0">
<tr height="20%" width="100%">
<td><asp:label id="Label3" runat="server" Width="87px" ForeColor="Red">已选择组</asp:label></td>
</tr>
<tr height="80%" width="100%">
<td width="100%" height="80%"><asp:listbox id="suregroup" runat="server" Width="100%" Height="137px" SelectionMode="Multiple"
ForeColor="Red"></asp:listbox></td>
</tr>
</table>
</FONT>
</TD>
</TR>
<TR>
<TD style="BORDER-TOP: #cfd8ea 1px solid" align="center" bgColor="#f2f6ff" colSpan="3"
height="64"><asp:imagebutton id="ib_queding" runat="server" ImageUrl="../images/btn_queding.gif"></asp:imagebutton>&nbsp; 
&nbsp;&nbsp; <IMG style="CURSOR: hand" onclick="butDes_onclick()" alt="" src="../images/btn_quxiao.gif"></TD>
</TR>
</TABLE>
</TD>
</TR>
</TABLE>
</form>
<SCRIPT language="VBSCript">
'确定
sub butSelect_onclick()
dim str,strr
lens=document.all("SureLb").length-1
if lens=-1 then
else
for i=0 to lens
if i=0 then
strr=strr+document.all("SureLb").options(i).value
strp=strp+document.all("SureLb").options(i).text
else
strr=strr+","+document.all("SureLb").options(i).value
strp=strp+","+document.all("SureLb").options(i).text
end if 
next
str=str+strr+"&"+strp
  end if
  window.returnValue=str
  window.close()
end sub
'取消
sub butDes_onclick()
  window.returnValue=""
  window.close()
end sub
</SCRIPT>
</body>
</HTML>

#11

警告*8808一次，请别这么做

#12

在选择下拉框中的部门和人员时，速度很慢，你是不是每次都是从数据库中读取部门和人员数据填入下拉框。正确做法是第一次用到时读数据库，并保留在内存中，第二次及以后使用时直接从内存读取。

#13

我是on_load中将部门放在下拉框中，选择下拉框时将根据下拉框的值在表中取数据后绑定列表框

#14

浏览器->查看->查看源文件，搜索VIEWSTATE，看看是不是非常大。像下面这个大小算是正常的:
<input type="hidden" name="__VIEWSTATE" value="此处省略6048字节" />
------------------------------------------------------------------------
对不起，我应该这样回复。请saucer(思归)大哥把我原来那个回复删除，谢谢。

#15

我的代码中的value是一大串字符，如同你第一次那样，说明了什么，应该如何做呢？
<input type="hidden" name="__VIEWSTATE" value="一大串字符" />

#16

我是on_load中将部门放在下拉框中，选择下拉框时将根据下拉框的值在表中取数据后绑定列表框
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如果人员表的数据不是太多的话，比如在几千人到几万人之间，建议事先把数据库中人员表的“部门ID、姓名、E-Mail地址”等列读入一个静态的DataTable字段或Session中，然后人员列表框绑定DataView，再根据所选部门设置DataView的RowFilter属性为: "部门ID="+所选部门

#17

除非你的记录有很多,导致IE解释HTML时很慢.
你获取雇员的时候是不是通过视图,如果是用查询分析器看下视图执行结果.
最好把大概的代码贴出来.

#18

建议用Cache，可以让多人使用共享数据，提高速度！

#19

mycls.Fill("select nodeid,mc from 人员表 where parentid ='下拉框的植' order by order_id");
this.SelBl.DataSource =mycls.ds.Tables[0].DefaultView;

this.SelBl.DataBind();
mycls.Close();

#20

上面是选择下拉框后执行的代码

#21

Cache如何用呀？

#22

你设一下断点，在单步执行Onload事件函数的每个语句，然后在下拉框的OnSelectChanged事件函数的第一个语句设一个断点，看大部分时间花在哪个函数里面执行了。

#23

用的是什么数据库？