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subString问题,超急,在线等~~~

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悬赏园豆:20 [已解决问题] 解决于 2008-08-25 11:31
<P>我的代码不知道为什么不能return,</P> <P>别人说,可能是substring改变了自负串的长度</P> <P>但是,我查过,并没有改变,但是我去掉了subString的部分,果然可以retun,郁闷</P> <P>谢谢你们了,以下是我的代码</P> <DIV class=cnblogs_code><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><SPAN style="COLOR: #008080">&nbsp;1</SPAN><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/None.gif" align=top><SPAN style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #0000ff">public</SPAN><SPAN style="COLOR: #000000">&nbsp;</SPAN><SPAN style="COLOR: #0000ff">static</SPAN><SPAN style="COLOR: #000000">&nbsp;ArrayList&nbsp;getUrl(</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">&nbsp;Html,&nbsp;</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">&nbsp;linkStart,&nbsp;</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">&nbsp;linkEnd)<BR></SPAN><SPAN style="COLOR: #008080">&nbsp;2</SPAN><SPAN style="COLOR: #000000"><IMG id=Codehighlighter1_94_1493_Open_Image onclick="this.style.display='none'; document.getElementById('Codehighlighter1_94_1493_Open_Text').style.display='none'; document.getElementById('Codehighlighter1_94_1493_Closed_Image').style.display='inline'; document.getElementById('Codehighlighter1_94_1493_Closed_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ExpandedBlockStart.gif" align=top><IMG id=Codehighlighter1_94_1493_Closed_Image style="DISPLAY: none" onclick="this.style.display='none'; document.getElementById('Codehighlighter1_94_1493_Closed_Text').style.display='none'; document.getElementById('Codehighlighter1_94_1493_Open_Image').style.display='inline'; document.getElementById('Codehighlighter1_94_1493_Open_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ContractedBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN id=Codehighlighter1_94_1493_Closed_Text style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG src="http://space.cnblogs.com/images/dot.gif"></SPAN><SPAN id=Codehighlighter1_94_1493_Open_Text><SPAN style="COLOR: #000000">{<BR></SPAN><SPAN style="COLOR: #008080">&nbsp;3</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;ArrayList&nbsp;urlList&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;</SPAN><SPAN style="COLOR: #0000ff">new</SPAN><SPAN style="COLOR: #000000">&nbsp;ArrayList();<BR></SPAN><SPAN style="COLOR: #008080">&nbsp;4</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">&nbsp;tempLinkStart&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;</SPAN><SPAN style="COLOR: #800000">"</SPAN><SPAN style="COLOR: #800000">{$theLinkStart}</SPAN><SPAN style="COLOR: #800000">"</SPAN><SPAN style="COLOR: #000000">;<BR></SPAN><SPAN style="COLOR: #008080">&nbsp;5</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #0000ff">string</SPAN><SPAN style="COLOR: #000000">&nbsp;tempLinkEnd&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;</SPAN><SPAN style="COLOR: #800000">"</SPAN><SPAN style="COLOR: #800000">{$theLinkEnd}</SPAN><SPAN style="COLOR: #800000">"</SPAN><SPAN style="COLOR: #000000">;<BR></SPAN><SPAN style="COLOR: #008080">&nbsp;6</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Html&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;Html.Replace(linkStart,&nbsp;tempLinkStart);<BR></SPAN><SPAN style="COLOR: #008080">&nbsp;7</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Html&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;Html.Replace(linkEnd,&nbsp;tempLinkEnd);<BR></SPAN><SPAN style="COLOR: #008080">&nbsp;8</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top><BR></SPAN><SPAN style="COLOR: #008080">&nbsp;9</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #0000ff">for</SPAN><SPAN style="COLOR: #000000">&nbsp;(</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">&nbsp;i&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;</SPAN><SPAN style="COLOR: #800080">0</SPAN><SPAN style="COLOR: #000000">;&nbsp;i&nbsp;</SPAN><SPAN style="COLOR: #000000">&lt;</SPAN><SPAN style="COLOR: #000000">&nbsp;Html.Length;&nbsp;i</SPAN><SPAN style="COLOR: #000000">++</SPAN><SPAN style="COLOR: #000000">)<BR></SPAN><SPAN style="COLOR: #008080">10</SPAN><SPAN style="COLOR: #000000"><IMG id=Codehighlighter1_426_1454_Open_Image onclick="this.style.display='none'; document.getElementById('Codehighlighter1_426_1454_Open_Text').style.display='none'; document.getElementById('Codehighlighter1_426_1454_Closed_Image').style.display='inline'; document.getElementById('Codehighlighter1_426_1454_Closed_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" align=top><IMG id=Codehighlighter1_426_1454_Closed_Image style="DISPLAY: none" onclick="this.style.display='none'; document.getElementById('Codehighlighter1_426_1454_Closed_Text').style.display='none'; document.getElementById('Codehighlighter1_426_1454_Open_Image').style.display='inline'; document.getElementById('Codehighlighter1_426_1454_Open_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN id=Codehighlighter1_426_1454_Closed_Text style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG src="http://space.cnblogs.com/images/dot.gif"></SPAN><SPAN id=Codehighlighter1_426_1454_Open_Text><SPAN style="COLOR: #000000">{<BR></SPAN><SPAN style="COLOR: #008080">11</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000">&nbsp;(Html.Substring(i,&nbsp;tempLinkStart.Length)&nbsp;</SPAN><SPAN style="COLOR: #000000">==</SPAN><SPAN style="COLOR: #000000">&nbsp;tempLinkStart)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000">判断是否查找到tempLinkStart({$theLinkStart})</SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #008080">12</SPAN><SPAN style="COLOR: #008000"><IMG id=Codehighlighter1_568_1327_Open_Image onclick="this.style.display='none'; document.getElementById('Codehighlighter1_568_1327_Open_Text').style.display='none'; document.getElementById('Codehighlighter1_568_1327_Closed_Image').style.display='inline'; document.getElementById('Codehighlighter1_568_1327_Closed_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" align=top><IMG id=Codehighlighter1_568_1327_Closed_Image style="DISPLAY: none" onclick="this.style.display='none'; document.getElementById('Codehighlighter1_568_1327_Closed_Text').style.display='none'; document.getElementById('Codehighlighter1_568_1327_Open_Image').style.display='inline'; document.getElementById('Codehighlighter1_568_1327_Open_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" align=top></SPAN><SPAN style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN id=Codehighlighter1_568_1327_Closed_Text style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG src="http://space.cnblogs.com/images/dot.gif"></SPAN><SPAN id=Codehighlighter1_568_1327_Open_Text><SPAN style="COLOR: #000000">{<BR></SPAN><SPAN style="COLOR: #008080">13</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #0000ff">for</SPAN><SPAN style="COLOR: #000000">&nbsp;(</SPAN><SPAN style="COLOR: #0000ff">int</SPAN><SPAN style="COLOR: #000000">&nbsp;j&nbsp;</SPAN><SPAN style="COLOR: #000000">=</SPAN><SPAN style="COLOR: #000000">&nbsp;i&nbsp;</SPAN><SPAN style="COLOR: #000000">+</SPAN><SPAN style="COLOR: #000000">&nbsp;tempLinkStart.Length;&nbsp;j&nbsp;</SPAN><SPAN style="COLOR: #000000">&lt;</SPAN><SPAN style="COLOR: #000000">&nbsp;Html.Length;&nbsp;j</SPAN><SPAN style="COLOR: #000000">++</SPAN><SPAN style="COLOR: #000000">)&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000">从tempLinkStart({$theLinkStart})的后一位开始循环</SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #008080">14</SPAN><SPAN style="COLOR: #008000"><IMG id=Codehighlighter1_716_1309_Open_Image onclick="this.style.display='none'; document.getElementById('Codehighlighter1_716_1309_Open_Text').style.display='none'; document.getElementById('Codehighlighter1_716_1309_Closed_Image').style.display='inline'; document.getElementById('Codehighlighter1_716_1309_Closed_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" align=top><IMG id=Codehighlighter1_716_1309_Closed_Image style="DISPLAY: none" onclick="this.style.display='none'; document.getElementById('Codehighlighter1_716_1309_Closed_Text').style.display='none'; document.getElementById('Codehighlighter1_716_1309_Open_Image').style.display='inline'; document.getElementById('Codehighlighter1_716_1309_Open_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" align=top></SPAN><SPAN style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN id=Codehighlighter1_716_1309_Closed_Text style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG src="http://space.cnblogs.com/images/dot.gif"></SPAN><SPAN id=Codehighlighter1_716_1309_Open_Text><SPAN style="COLOR: #000000">{<BR></SPAN><SPAN style="COLOR: #008080">15</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #0000ff">if</SPAN><SPAN style="COLOR: #000000">&nbsp;(Html.Substring(j,&nbsp;tempLinkEnd.Length)&nbsp;</SPAN><SPAN style="COLOR: #000000">==</SPAN><SPAN style="COLOR: #000000">&nbsp;tempLinkEnd)&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000">判断是否查找到tempLinkEnd({$theLinkEnd})</SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #008080">16</SPAN><SPAN style="COLOR: #008000"><IMG id=Codehighlighter1_862_1287_Open_Image onclick="this.style.display='none'; document.getElementById('Codehighlighter1_862_1287_Open_Text').style.display='none'; document.getElementById('Codehighlighter1_862_1287_Closed_Image').style.display='inline'; document.getElementById('Codehighlighter1_862_1287_Closed_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockStart.gif" align=top><IMG id=Codehighlighter1_862_1287_Closed_Image style="DISPLAY: none" onclick="this.style.display='none'; document.getElementById('Codehighlighter1_862_1287_Closed_Text').style.display='none'; document.getElementById('Codehighlighter1_862_1287_Open_Image').style.display='inline'; document.getElementById('Codehighlighter1_862_1287_Open_Text').style.display='inline';" src="http://space.cnblogs.com/Images/OutliningIndicators/ContractedSubBlock.gif" align=top></SPAN><SPAN style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN id=Codehighlighter1_862_1287_Closed_Text style="BORDER-RIGHT: #808080 1px solid; BORDER-TOP: #808080 1px solid; DISPLAY: none; BORDER-LEFT: #808080 1px solid; BORDER-BOTTOM: #808080 1px solid; BACKGROUND-COLOR: #ffffff"><IMG src="http://space.cnblogs.com/images/dot.gif"></SPAN><SPAN id=Codehighlighter1_862_1287_Open_Text><SPAN style="COLOR: #000000">{<BR></SPAN><SPAN style="COLOR: #008080">17</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000">把tempLinkStart({$theLinkStart})与tempLinkEnd({$theLinkEnd})之间的内容添加到urlList里</SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #008080">18</SPAN><SPAN style="COLOR: #008000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top></SPAN><SPAN style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;urlList.Add(Html.Substring(i&nbsp;</SPAN><SPAN style="COLOR: #000000">+</SPAN><SPAN style="COLOR: #000000">&nbsp;tempLinkStart.Length,&nbsp;j&nbsp;</SPAN><SPAN style="COLOR: #000000">-</SPAN><SPAN style="COLOR: #000000">&nbsp;(i&nbsp;</SPAN><SPAN style="COLOR: #000000">+</SPAN><SPAN style="COLOR: #000000">&nbsp;tempLinkStart.Length)).ToString());<BR></SPAN><SPAN style="COLOR: #008080">19</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000">MessageBox.Show(Html.Substring(i&nbsp;+&nbsp;tempLinkStart.Length,&nbsp;j&nbsp;-&nbsp;(i&nbsp;+&nbsp;tempLinkStart.Length)).ToString());</SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #008080">20</SPAN><SPAN style="COLOR: #008000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top></SPAN><SPAN style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #0000ff">break</SPAN><SPAN style="COLOR: #000000">;<BR></SPAN><SPAN style="COLOR: #008080">21</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #008080">22</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #008080">23</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #008080">24</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;MessageBox.Show(Html.Length.ToString());&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #008000">//</SPAN><SPAN style="COLOR: #008000">我这里为了测试,出数html的长度,但是没有问题~~不变的!但是不知道为什么return不了</SPAN><SPAN style="COLOR: #008000"><BR></SPAN><SPAN style="COLOR: #008080">25</SPAN><SPAN style="COLOR: #008000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/ExpandedSubBlockEnd.gif" align=top></SPAN><SPAN style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN><SPAN style="COLOR: #000000"><BR></SPAN><SPAN style="COLOR: #008080">26</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top><BR></SPAN><SPAN style="COLOR: #008080">27</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/InBlock.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</SPAN><SPAN style="COLOR: #0000ff">return</SPAN><SPAN style="COLOR: #000000">&nbsp;urlList;<BR></SPAN><SPAN style="COLOR: #008080">28</SPAN><SPAN style="COLOR: #000000"><IMG src="http://space.cnblogs.com/Images/OutliningIndicators/ExpandedBlockEnd.gif" align=top>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}</SPAN></SPAN></DIV>
Richard Law的主页 Richard Law | 初学一级 | 园豆:0
提问于:2008-08-25 00:28
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最佳答案
0
建议你使用 Html.Indexof(tempLinkStart, i) 来进行判断,而不要使用SubString 而且你用这个for 循环,效率太低,应使用 while 循环, while (i < Html.Length) { int pos = Html.Indexof(tempLinkStart, i); if (pos < 0) {//未找到tempLinkStart break; } else { i = pos + tempLinkStart.Length; } } 这样做效率要高很多。
eaglet | 专家六级 |园豆:17119 | 2008-08-25 08:39
其他回答(3)
0
=。= 估计是超出索引界限了 我记得js的substring和。net的substring处理方式不一样 一个是从索引a到b 一个是从索引a开始的b个字符的长度 建议你try catch下 把for循环try下 看会不会到catch里 你这段代码如果不发生死循环且不抛异常 是不会没有retrun的
小眼睛老鼠 | 园豆:2774 (老鸟四级) | 2008-08-25 01:20
0
你是在做循环标签替换嘛?改为正则表达式方面多了.
snryang | 园豆:24 (初学一级) | 2008-08-25 09:05
0
赞同eaglet 的作法: 说下你这个代码: #1 效率低是一定的了,因为你这个要遍历每一个字符 #2 代码我测试过这个不存在return不了的问题,应该是 在11行时“if(Html.Substring(i, tempLinkStart.Length) == tempLinkStart)” 这个出现问题,因为当i 本身小于html.length,但是当它再加上一个值时,就很可能出现超出html.length的长度,这样就出现异常了 实质上是Html.Substring(i, tempLinkStart.Length)出现异常
一杰 | 园豆:790 (小虾三级) | 2008-08-25 10:07
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