关于TreeView的问题

this.SetStyle(ControlStyles.DoubleBuffer |
      ControlStyles.UserPaint |
      ControlStyles.AllPaintingInWmPaint,
      true);
   this.UpdateStyles();

解决方案 »

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这个是我的一个被做成网页形式的asp讲解书籍里面的代码，正好可以把那个网页的源码拿来研究一下，大家可以用来试试。<html>
<head>
<meta HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=gb2312">
<meta NAME="GENERATOR" CONTENT="Microsoft FrontPage 3.0">
<title>ASP中文使用手册</title>
<script LANGUAGE="JavaScript">

</script>
<script LANGUAGE="JavaScript1.2">
<!--
isExpanded = false;function getIndex(el) {
ind = null;
for (i=0; i<document.layers.length; i++) {
whichEl = document.layers[i];
if (whichEl.id == el) {
ind = i;
break;
}
}
return ind;
}function arrange() {
nextY = document.layers[firstInd].pageY + document.layers[firstInd].document.height;
for (i=firstInd+1; i<document.layers.length; i++) {
whichEl = document.layers[i];
if (whichEl.visibility != "hide") {
whichEl.pageY = nextY;
nextY += whichEl.document.height;
}
}
}
function initIt(){
if (NS4) {
for (i=0; i<document.layers.length; i++) {
whichEl = document.layers[i];
if (whichEl.id.indexOf("Child") != -1) whichEl.visibility = "hide";
}
arrange();
}
else {
tempColl = document.all.tags("DIV");
for (i=0; i<tempColl.length; i++) {
if (tempColl(i).className == "child") tempColl(i).style.display = "none";
}
}
}function expandIt(el) {
if (!ver4) return;
if (IE4) {expandIE(el)} else {expandNS(el)}
}function expandIE(el) {
whichEl = eval(el + "Child");
whichIm = event.srcElement; if (whichEl.style.display == "none") {
whichEl.style.display = "block";
whichIm.src = "images/minus.gif";
}
else {
whichEl.style.display = "none";
whichIm.src = "images/icon-t.gif";
}
    window.event.cancelBubble = true ;
}function expandNS(el) {
whichEl = eval("document." + el + "Child");
whichIm = eval("document." + el + "Parent.document.images['imEx']");
if (whichEl.visibility == "hide") {
whichEl.visibility = "show";
whichIm.src = "images/minus.gif";
}
else {
whichEl.visibility = "hide";
whichIm.src = "images/icon-t.gif";
}
arrange();
}function showAll() {
for (i=firstInd; i<document.layers.length; i++) {
whichEl = document.layers[i];
whichEl.visibility = "show";
}
}function expandAll(isBot) {
newSrc = (isExpanded) ? "minus.gif" : "icon-t.gif"; if (NS4) {
        document.images["imEx"].src = newSrc;
for (i=firstInd; i<document.layers.length; i++) {
whichEl = document.layers[i];
if (whichEl.id.indexOf("Parent") != -1) {
whichEl.document.images["imEx"].src = newSrc;
}
if (whichEl.id.indexOf("Child") != -1) {
whichEl.visibility = (isExpanded) ? "hide" : "show";
}
} arrange();
if (isBot && isExpanded) scrollTo(0,document.layers[firstInd].pageY);
}
else {
divColl = document.all.tags("DIV");
for (i=0; i<divColl.length; i++) {
if (divColl(i).className == "child") {
divColl(i).style.display = (isExpanded) ? "none" : "block";
}
}
imColl = document.images.item("imEx");
for (i=0; i<imColl.length; i++) {
imColl(i).src = newSrc;
}
} isExpanded = !isExpanded;
}with (document) {
write("<STYLE TYPE='text/css'>");
if (NS4) {
write(".parent {font-size:9pt; line-height:10pt; color:black; text-decoration:none; margin-top: 5px; margin-bottom: 5px; position:absolute; visibility:hidden; color: black;}");
write(".child {text-decoration:none; font-size:9pt; line-height:10pt; position:absolute; visibility:hidden}");
        write(".item { color: darkblue; text-decoration:none;}");
write(".regular {position:absolute; visibility:hidden}");
        write("DIV { color:black; }")
}
else {
write(".child {font:12px/13px Times; display:none}");
write(".parent {font:12px/13px Times; color:black; font-weight:bold; text-decoration:none; margin-top: 5px; margin-bottom: 5px; color: black;}");
        write(".item { color: darkblue; text-decoration:none;}");
        write(".highlight { color: red; }");
        write(".heada { font: 12px/13px; Times}");
        write("DIV { color:black; }")
}
write("</STYLE>");
}onload = initIt;//-->
</script><base target="main">
</head><body BGCOLOR="#FFFFFF" LINK="#000000" VLINK="#FF0000" ALINK="#0000FF" topmargin="11"
leftmargin="15" marginwidth="15" marginheight="11">
<div ID="elOneParent" CLASS="parent"><a HREF="#" class="item"
onClick="expandIt('elOne'); return false">
<img SRC="icon-t.gif" tppabs="http://210.74.168.175/guide/asp/icon-t.gif" NAME="imEx" BORDER="0" HEIGHT="10" WIDTH="5"><font SIZE="-1"
  COLOR="#000000">第一部分<br>
   安装Active Server<br>
   Page的准备工作</font></a>
</div><div ID="elOneChild" CLASS="child"><p> <a HREF="part1/down1.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part1/down1.cfm" class="item">.第一章
安装和使用<br>
  WINDOWS NT Server</a><br>
   ............<br>
 <a HREF="part2/down2.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part2/down2.cfm" class="item">.第二章
安装和使用<br>
  IIS</a><br>
   ............<br>
 <a HREF="part3/down3.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part3/down3.cfm" class="item">.第三章
安装和使用<br>
  SQL Server</a><br>
   ............<br>
 <a HREF="part4/down4.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part4/down4.cfm" class="item">.第四章
Exchage<br>
  Active Server, <br>
  Index Server和<br>
  NetShow </a></p>
</div><div ID="elTwoParent" CLASS="parent"><a HREF="#" class="item"
onClick="expandIt('elTwo'); return false">
<img SRC="icon-t.gif" tppabs="http://210.74.168.175/guide/asp/icon-t.gif" NAME="imEx" BORDER="0" HEIGHT="10" WIDTH="5"><font SIZE="-1"
  COLOR="#000000">第二部分<br>
   标记及脚本语言</font></a>
</div><div ID="elTwoChild" CLASS="child">
<p> <a HREF="part5/down5.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part5/down5.cfm" class="item">.第五章
初级HTML</a><br>
   ............<br>
 <a HREF="part6/down6.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part6/down6.cfm" class="item">.第六章
中级HTML</a><br>
   ............<br>
 <a HREF="part7/down7.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part7/down7.cfm" class="item">.第七章
高级HTML</a><br>
   ............<br>
 <a HREF="part8/down8.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part8/down8.cfm" class="item">.第八章
VBScript</a><br>
   ............<br>
 <a HREF="part9/down9.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part9/down9.cfm" class="item">.第九章
JScript</a> </p>
</div><div ID="elThreeParent" CLASS="parent"><a HREF="#" class="item"
onClick="expandIt('elThree'); return false">
<img SRC="icon-t.gif" tppabs="http://210.74.168.175/guide/asp/icon-t.gif" NAME="imEx" BORDER="0" HEIGHT="10" WIDTH="5"><font
  SIZE="-1" COLOR="#000000">第三部分<br>
   操作数据: SQL</font></a>
</div><div ID="elThreeChild" CLASS="child"><p> <a HREF="part10/down10.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part10/down10.cfm" class="item">.第十章
SQL基础</a><br>
   ............<br>
 <a HREF="part11/down11.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part11/down11.cfm" class="item">.第十一章
中级SQL</a><br>
   ............<br>
 <a HREF="part12/down12.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part12/down12.cfm" class="item">.第十二章
高级SQL</a> </p>
</div><div ID="elFourParent" CLASS="parent"><a HREF="#" class="item"
onClick="expandIt('elFour'); return false">
<img SRC="icon-t.gif" tppabs="http://210.74.168.175/guide/asp/icon-t.gif" NAME="imEx" BORDER="0" HEIGHT="10" WIDTH="5"><font
  SIZE="-1" COLOR="#000000">第四部分<br>
   创建Active Server<br>
   Pages</font></a>
</div><div ID="elFourChild" CLASS="child"><p> <a HREF="part13/down13.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part13/down13.cfm" class="item">.第十三章构建ASP</a><br>
   ............<br>
 <a HREF="part14/down14.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part14/down14.cfm" class="item">.第十四章
单独利用<br>
  ASP工作</a><br>
   ............<br>
 <a HREF="part15/down15.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part15/down15.cfm" class="item">.第十五章
对多于一<br>
  个ASP进行处理</a><br>
   ............<br>
 <a HREF="part16/down16.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part16/down16.cfm" class="item">.第十六章
对ASP<br>
  Session的处理</a><br>
   ............<br>
 <a HREF="part17/down17.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part17/down17.cfm" class="item">.第十七章
对ASP的<br>
  Applications处理</a><br>
   ............<br>
 <a HREF="part18/down18.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part18/down18.cfm" class="item">.第十八章
对浏览器<br>
  的处理</a><br>
   ............<br>
 <a HREF="part19/down19.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part19/down19.cfm" class="item">.第十九章
对文件、<br>
  驱动器和文件夹的<br>
  操作</a><br>
   ............<br>
 <a HREF="part20/down20.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part20/down20.cfm" class="item">.第二十章
提供站点<br>
  导航</a><br>
   ............<br>
 <a HREF="part21/down21.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part21/down21.cfm" class="item">.第二十一章
对广告<br>
  的处理</a> </p>
</div><div ID="elFiveParent" CLASS="parent"><a HREF="#" class="item"
onClick="expandIt('elFive'); return false">
<img SRC="icon-t.gif" tppabs="http://210.74.168.175/guide/asp/icon-t.gif" NAME="imEx" BORDER="0" HEIGHT="10" WIDTH="5"><font
  SIZE="-1" COLOR="#000000">第五部分<br>
   数据库组件</font></a>
</div><div ID="elFiveChild" CLASS="child"><p> <a HREF="part22/down22.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part22/down22.cfm" class="item">.第二十二章
Activex<br>
  数据对象</a><br>
   ............<br>
 <a HREF="part23/down23.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part23/down23.cfm" class="item">.第二十三章
操作记录集</a><br>
   ............<br>
 <a HREF="part24/down24.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part24/down24.cfm" class="item">.第二十四章
使用命令</a> </p>
</div><div ID="elIllParent" CLASS="parent"><a HREF="#" class="item"
onClick="expandIt('elIll'); return false">
<img SRC="icon-t.gif" tppabs="http://210.74.168.175/guide/asp/icon-t.gif" NAME="imEx" BORDER="0" HEIGHT="10" WIDTH="5"><font
  SIZE="-1" COLOR="#000000">第六部分<br>
   使用Visual Studio</font></a>
</div><div ID="elIllChild" CLASS="child"><p> <a HREF="part25/down25.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part25/down25.cfm" class="item">.第二十五章
使用<br>
  MicroSoft Visual<br>
  InterDev</a><br>
   ............<br>
 <a HREF="part26/down26.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part26/down26.cfm" class="item">.第二十六章
使用<br>
  Microsoft Image<br>
  Composer</a><br>
   ............<br>
 <a HREF="part27/down27.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part27/down27.cfm" class="item">.第二十七章
使用<br>
  Microsoft Music<br>
  Producer</a><br>
   ............<br>
 <a HREF="part28/down28.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part28/down28.cfm" class="item">.第二十八章
扩展ASP</a> </p>
</div><div ID="elSixParent" CLASS="parent"><a HREF="#" class="item"
onClick="expandIt('elSix'); return false">
<img SRC="icon-t.gif" tppabs="http://210.74.168.175/guide/asp/icon-t.gif" NAME="imEx" BORDER="0" HEIGHT="10" WIDTH="5"><font
  SIZE="-1" COLOR="#000000">第七部分<br>
   综合介绍</font></a>
</div><div ID="elSixChild" CLASS="child"><p> <a HREF="part29/down29.cfm.htm" tppabs="http://210.74.168.175/guide/asp/part29/down29.cfm" class="item">.第二十九章
创建一个<br>  在线职业服务网站</a> </p>
</div><div ID="elSevenParent" CLASS="parent"><a HREF="#" class="item"
onClick="expandIt('elSeven'); return false">
<img SRC="icon-t.gif" tppabs="http://210.74.168.175/guide/asp/icon-t.gif" NAME="imEx" BORDER="0" HEIGHT="10" WIDTH="5"><font
  SIZE="-1" COLOR="#000000">第八部分<br>
   附录</font></a>
</div><div ID="elSevenChild" CLASS="child"><p> <a HREF="appendixa/downa.cfm.htm" tppabs="http://210.74.168.175/guide/asp/appendixa/downa.cfm" class="item">.附录A<br>  ASP对象和组件快速参考</a>
<br>   ............<br>
 <a HREF="appendixb/downb.cfm.htm" tppabs="http://210.74.168.175/guide/asp/appendixb/downb.cfm" class="item">.附录B<br>  JScript 快速参考</a>
<br>   ............<br>
 <a HREF="appendixc/downc.cfm.htm" tppabs="http://210.74.168.175/guide/asp/appendixc/downc.cfm" class="item">.附录C<br>  VBScript 快速参考</a>
<br>   ............<br>
 <a HREF="appendixd/downd.cfm.htm" tppabs="http://210.74.168.175/guide/asp/appendixd/downd.cfm" class="item">.附录D<br>  快速HTML参考</a>
</p>
</div><script LANGUAGE="JavaScript1.2">

</script>
<p><br>
  <br>
  </p>
</body>
</html>
在ASPX文件里加上<Page languange=c# SmartNavigation=true>