请教正则提取网页url和网格数据

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<td width="40%" align="left"><b><font color="#40668a" size="2">登记</font></b><font color="#40668a" size="2"><b>->>信息列表</b></font></td> <td width="20%" align="left"> </td>
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<table style="BORDER-COLLAPSE: collapse" borderColor="#111111" cellSpacing="1" border="1" borderColorDark="#4455aa" borderColorLight="#4455aa" height="20" width="100%" id="tt"> <tr align="center">
<td class=ColTitle >身份证号</td>
<td class=ColTitle >户籍地区划</td>
<td class=ColTitle >案件类别</td>
<td class=ColTitle >立案单位</td>
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<tr align="center" class="evenSelNone" onDblClick="openDetail(this)" onclick="rowSelected(this)" ref="DJOutputDetail.jsp?type=9&id=1100000000000014380">
<td class="ColValue" align="center">1</td>
<td class="ColValue" align="center"><a href="DJOutputDetail.jsp?type=9&id=1100000000000014380">1105280009992006120019</a></td>
<td class="ColValue" align="center">胡波</td>
<td class="ColValue" align="center">男</td>
<td class="ColValue" align="center">652801197603243437</td>
<td class="ColValue" align="center">锦江区</td>
<td class="ColValue" align="center">挪案</td>
<td class="ColValue" align="center">北察院</td>
</tr><tr align="center" class="evenSelNone" onDblClick="openDetail(this)" onclick="rowSelected(this)" ref="DJOutputDetail.jsp?type=9&id=1101010002001080027">
<td class="ColValue" align="center">3</td>
<td class="ColValue" align="center"><a href="DJOutputDetail.jsp?type=9&id=1101010002001080027">1101010009992001080027</a></td>
<td class="ColValue" align="center">刘明</td>
<td class="ColValue" align="center">男</td>
<td class="ColValue" align="center">110228195610300330</td>
<td class="ColValue" align="center">淀区</td>
<td class="ColValue" align="center">合同案</td>
<td class="ColValue" align="center">北京东城区</td>
</tr><tr align="center" class="evenSelNone" onDblClick="openDetail(this)" onclick="rowSelected(this)" ref="DJOutputDetail.jsp?type=9&id=1101010002001080076">
<td class="ColValue" align="center">4</td>
<td class="ColValue" align="center"><a href="DJOutputDetail.jsp?type=9&id=1101010002001080076">1101010009992001080076</a></td>
<td class="ColValue" align="center">张齐</td>
<td class="ColValue" align="center">男</td>
<td class="ColValue" align="center">110101196602112515</td>
<td class="ColValue" align="center">北阳区</td>
<td class="ColValue" align="center">贩品案</td>
<td class="ColValue" align="center">北城区</td>
</tr><tr align="center" class="evenSelNone" onDblClick="openDetail(this)" onclick="rowSelected(this)" ref="DJOutputDetail.jsp?type=9&id=1101010002001120199">
<td class="ColValue" align="center">5</td>
<td class="ColValue" align="center"><a href="DJOutputDetail.jsp?type=9&id=1101010002001120199">1101010009992001120199</a></td>
<td class="ColValue" align="center">朱强</td>
<td class="ColValue" align="center">男</td>
<td class="ColValue" align="center">110105196302192256</td>
<td class="ColValue" align="center">北阳区</td>
<td class="ColValue" align="center">窝、庇案</td>
<td class="ColValue" align="center">北东城区</td>
</tr>><tr align="center" class="evenSelNone" onDblClick="openDetail(this)" onclick="rowSelected(this)" ref="DJOutputDetail.jsp?type=9&id=1101010002004010009">
<td class="ColValue" align="center">9</td>
<td class="ColValue" align="center"><a href="DJOutputDetail.jsp?type=9&id=1101010002004010009">1101010009992004010009</a></td>
<td class="ColValue" align="center">于飞</td>
<td class="ColValue" align="center">男</td>
<td class="ColValue" align="center">211224198408235339</td>
<td class="ColValue" align="center">辽县</td>
<td class="ColValue" align="center">故意伤害案</td>
<td class="ColValue" align="center">北京东城区</td>
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<td class="ColValue" align="center">14</td>
<td class="ColValue" align="center"><a href="DJOutputDetail.jsp?type=9&id=1101020000000030122">1101020009992008020002</a></td>
<td class="ColValue" align="center">孙浣铭</td>
<td class="ColValue" align="center">男</td>
<td class="ColValue" align="center">220724198901215436</td>
<td class="ColValue" align="center">吉林松原市扶余县</td>
<td class="ColValue" align="center">故意伤害案</td>
<td class="ColValue" align="center">北京西城区</td>
</tr><tr align="center" class="evenSelNone" onDblClick="openDetail(this)" onclick="rowSelected(this)" ref="DJOutputDetail.jsp?type=9&id=1101020002004120145">
<td class="ColValue" align="center">16</td>
<td class="ColValue" align="center"><a href="DJOutputDetail.jsp?type=9&id=1101020002004120145">1101020009992004120145</a></td>
<td class="ColValue" align="center">王光春</td>
<td class="ColValue" align="center">男</td>
<td class="ColValue" align="center">512227197701067879</td>
<td class="ColValue" align="center">重庆巫山县</td>
<td class="ColValue" align="center">抢劫案</td>
<td class="ColValue" align="center">北京西城区</td>
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<td align="left" width="50%">查询结果共302318名/本页为第1页/共16796页 （只返回前5000名记录）</td> <td align="right" width="20%"> </td>

<td align="right" width="10%"> </td>
<td align="right" width="20%">
<a href="DJOutputList.jsp?type=9&show_type=simple&endid=1101020002005060053&firstid=1100000000000014380&intCount=302318&flag=behind&page=2&intperpagecount=18&from_sub=">[下一页]</a> 
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解决方案 »

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下一页<tr>
<td width="100%">
<table width="100%">
<tr>
<td align="left" width="50%">查询结果共302318名/本页为第3页/共16796页 （只返回前5000名记录）</td> <td align="right" width="20%"> </td>

<td align="right" width="10%"> </td>
<td align="right" width="20%">
<a href="DJOutputList.jsp?type=9&show_type=simple&endid=4202060012001080001&firstid=3102260312004090151&intCount=302318&flag=first&page=1&intperpagecount=18&from_sub=">[首页]</a> 
<a href="DJOutputList.jsp?type=9&show_type=simple&endid=4202060012001080001&firstid=3102260312004090151&intCount=302318&flag=behind&page=4&intperpagecount=18&from_sub=">[下一页]</a> 
</td>
</tr>
</table>
</td>
</tr>
最后一页
<tr>
<td width="100%">
<table width="100%">
<tr>
<td align="left" width="50%">查询结果共302280名/本页为第16794页/共16794页 （只返回前5000名记录）</td> <td align="right" width="20%"> </td>

<td align="right" width="10%"> </td>
<td align="right" width="20%">
<a href="DJOutputList.jsp?type=9&show_type=simple&endid=3101090000000039108&firstid=1101050002001080236&intCount=302280&flag=first&page=1&intperpagecount=16794&from_sub=">[首页]</a> 
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</table>
</td>
</tr> 我已经向  root_提问个这个问题了，可是当时自己对问题不是太清楚，所以问题也不问的不明确现在才清楚我想要的
上面两楼  分别是首页，下一页（数据和首页数据格式一致，故省略了）和最后一页（数据和首页数据格式一致，故省略了）
我需要获得每页上链接  确切的说是 Body中 Table 的单元格的超链接如
<td class="ColValue" align="center"> <a href="DJOutputDetail.jsp?type=9&id=1101010002004010009">1101010009992004010009 </a> </td>
<td class="ColValue" align="center">于飞 </td>
我只需要得到 DJOutputDetail.jsp?type=9&id=1101010002004010009，
同时还需要获得本页上[下一页]
<a href="DJOutputList.jsp?type=9&show_type=simple&endid=3101090000000039108&firstid=1101050002001080236&intCount=302280&flag=first&page=1&intperpagecount=16794&from_sub=">
中的DJOutputList.jsp?type=9&show_type=simple&endid=3101090000000039108&firstid=1101050002001080236&intCount=302280&flag=first&page=1&intperpagecount=16794&from_sub=
的链接，来进行递归读取下一页上的链接列表，这里有一个问题，到最后一页的时候，是返回首页的链接，递归的话这个如何处理？
以下的写法，假定你的数据格式相同，取table中链接时，是根据table中的id="tt"来取的，楼主确认一下是否每一页的table都符合这个条件
取下一页的链接时，是根据“下一页”这个字符串来取的，所以不存在楼主说的递归到最后一页时又返回首页的情况string html = ...........;//取table中链接
Match mTable = Regex.Match(html, @"<table[^>]*?id=""tt""[^>]*>[\s\S]*?</table>", RegexOptions.IgnoreCase);
if (mTable.Success)
{
    MatchCollection mc = Regex.Matches(mTable.Value, @"<td[^>]*>\s*<a\s*href=""(?<url>[^""]*)""[^>]*>[\s\S]*?</a>\s*</td>", RegexOptions.IgnoreCase);
    foreach (Match m in mc)
    {
        richTextBox1.Text += m.Groups["url"].Value + "\n";
    }
}
//取下一页链接
Match mNext = Regex.Match(html, @"<a\s*href=""(?<next>[^""]*)""[^>]*>[^>]*?下一页[^>]*</a>", RegexOptions.IgnoreCase);
if (mNext.Success)
{
    richTextBox1.Text += mNext.Groups["next"].Value + "\n";
}
用正则从字符串中提取子字符串，是需要以一些固定的，或是符合一定规律的字符串做为参照物来提取的，所以首先要明确哪些字符串，或是哪些规律是固定的，就像以上两个正则中的id="tt"和“下一页”一样
非常感谢  root_的回答
自己太笨，没什么好说的了，再谢
完成后过来结贴，真的不能加了  教我下正则么， 285775860 谢谢
分多少不重要，重要是能解决楼主的问题我最近比较忙，除了周末，只能晚上来看看正则学习要多练习才行，要看楼主是否有确实需要了，推荐一篇正则学习的文章吧
http://www.regexlab.com/zh/regref.htm