求一正则表达式

Question

<table border="0" width="713" id="table1" cellspacing="1" bgcolor="#476501">
<tr>
<td bgcolor="#CBE982" width="64"><b>
<font face="Arial" color="#000000">&nbsp;Cat. #</font></b></td>
<td bgcolor="#CBE982" width="92"><b>
<font face="Arial" color="#000000">&nbsp;Product Name</font></b></td>
<td bgcolor="#CBE982" width="405"><b>
<font face="Arial" color="#000000">&nbsp;Description</font></b></td>
<td bgcolor="#CBE982" width="61"><b>
<font face="Arial" color="#000000">&nbsp;Datasheet</font></b></td>
<td bgcolor="#CBE982"><b><font face="Arial" color="#000000">&nbsp;Price</font></b></td>
</tr>
<tr>
<td bgcolor="#E8F9BF" width="64" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="BMP-2.htm"><u>CRP0801</u></a></font></td>
<td bgcolor="#E8F9BF" width="92" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="BMP-2.htm"><font color="#454545">BMP-2</font></a></font></td>
<td bgcolor="#E8F9BF" width="405" height="26">
<font color="#454545" face="Arial">&nbsp;Recombinant Human Bone Morphogenetic Protein -2</font></td>
<td bgcolor="#E8F9BF" width="61" height="26">
<font face="Arial" color="#454545">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<a target="_blank" href="pdf/BMP-2%20(CRP0801).pdf">
<img border="0" src="proteinexpression_files/pdf.gif" width="15" height="15"></a></font></td>
<td bgcolor="#E8F9BF" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="http://www.creative-biolabs.com/contactus.htm">Contact us</a></font></td>
</tr>
<tr>
<td bgcolor="#E8F9BF" width="64" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="G-CSF.htm"><u>CRP0802</u></a></font></td>
<td bgcolor="#E8F9BF" width="92" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="G-CSF.htm"><font color="#454545">G-CSF</font></a></font></td>
<td bgcolor="#E8F9BF" width="405" height="26">
<font color="#454545" face="Arial">&nbsp;Recombinant Human Granulocy&#39;te-Colony Stimulating Factor</font></td>
<td bgcolor="#E8F9BF" width="61" height="26">
<font face="Arial" color="#454545">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<a target="_blank" href="pdf/G-CSF%20(CRP0802).pdf">
<img border="0" src="proteinexpression_files/pdf.gif" width="15" height="15"></a></font></td>
<td bgcolor="#E8F9BF" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="http://www.creative-biolabs.com/contactus.htm">Contact us</a></font></td>
</tr>
<tr>
<td bgcolor="#E8F9BF" width="64" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="IL-6.htm"><u>CRP0803</u></a></font></td>
<td bgcolor="#E8F9BF" width="92" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="IL-6.htm"><font color="#454545">IL-6</font></a></font></td>
<td bgcolor="#E8F9BF" width="405" height="26">
<font color="#454545" face="Arial">&nbsp;Recombinant Human Interleukin-6</font></td>
<td bgcolor="#E8F9BF" width="61" height="26">
<font face="Arial" color="#454545">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<a target="_blank" href="pdf/IL-6%20(CRP0803).pdf">
<img border="0" src="proteinexpression_files/pdf.gif" width="15" height="15"></a></font></td>
<td bgcolor="#E8F9BF" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="http://www.creative-biolabs.com/contactus.htm">Contact us</a></font></td>
</tr>
<tr>
<td bgcolor="#E8F9BF" width="64" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="LIF.htm"><u>CRP0804</u></a></font></td>
<td bgcolor="#E8F9BF" width="92" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="LIF.htm"><font color="#454545">LIF</font></a></font></td>
<td bgcolor="#E8F9BF" width="405" height="26">
<font color="#454545" face="Arial">&nbsp;Recombinant Human Leukemia Inhibitory Factor</font></td>
<td bgcolor="#E8F9BF" width="61" height="26">
<font face="Arial" color="#454545">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<a target="_blank" href="pdf/LIF%20(CRP0804).pdf">
<img border="0" src="proteinexpression_files/pdf.gif" width="15" height="15"></a></font></td>
<td bgcolor="#E8F9BF" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="http://www.creative-biolabs.com/contactus.htm">Contact us</a></font></td>
</tr>
<tr>
<td bgcolor="#E8F9BF" width="64" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="Long-R3-IGF-I.htm"><u>CRP0805</u></a></font></td>
<td bgcolor="#E8F9BF" width="92" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="Long-R3-IGF-I.htm"><font color="#454545">Long-R3-IGF-I</font></a></font></td>
<td bgcolor="#E8F9BF" width="405" height="26">
<font face="Arial" color="#454545">&nbsp;Recombinant Human Long Arg3 Insulin-like Growth Factor-I</font></td>
<td bgcolor="#E8F9BF" width="61" height="26">
<font face="Arial" color="#454545">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<a target="_blank" href="pdf/Long-R3-IGF-I%20(CRP0805).pdf">
<img border="0" src="proteinexpression_files/pdf.gif" width="15" height="15"></a></font></td>
<td bgcolor="#E8F9BF" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="http://www.creative-biolabs.com/contactus.htm">Contact us</a></font></td>
</tr>
<tr>
<td bgcolor="#E8F9BF" width="64" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="TNFa.htm"><u>CRP0806</u></a></font></td>
<td bgcolor="#E8F9BF" width="92" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="TNFa.htm"><font color="#454545">TNFα</font></a></font></td>
<td bgcolor="#E8F9BF" width="405" height="26">
<font color="#454545" face="Arial">&nbsp;Recombinant Human Tumor necrosis factor alpha</font></td>
<td bgcolor="#E8F9BF" width="61" height="26">
<font face="Arial" color="#454545">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<a target="_blank" href="pdf/TNFa(CRP0806).pdf">
<img border="0" src="proteinexpression_files/pdf.gif" width="15" height="15"></a></font></td>
<td bgcolor="#E8F9BF" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="http://www.creative-biolabs.com/contactus.htm">Contact us</a></font></td>
</tr>
<tr>
<td bgcolor="#E8F9BF" width="64" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="VEGI.htm"><u>CRP0807</u></a></font></td>
<td bgcolor="#E8F9BF" width="92" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="VEGI.htm"><font color="#454545">VEGI</font></a></font></td>
<td bgcolor="#E8F9BF" width="405" height="26">
<font color="#454545" face="Arial">&nbsp;Recombinant Human Vascular Endothelial Growth Inhibitor</font></td>
<td bgcolor="#E8F9BF" width="61" height="26">
<font face="Arial" color="#454545">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<a target="_blank" href="pdf/VEGI%20(CRP0807).pdf">
<img border="0" src="proteinexpression_files/pdf.gif" width="15" height="15"></a></font></td>
<td bgcolor="#E8F9BF" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="http://www.creative-biolabs.com/contactus.htm">Contact us</a></font></td>
</tr>
<tr>
<td bgcolor="#E8F9BF" width="64" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="GM-CSF.htm"><u>CRP0808</u></a></font></td>
<td bgcolor="#E8F9BF" width="92" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="GM-CSF.htm"><font color="#454545">GM-CSF</font></a></font></td>
<td bgcolor="#E8F9BF" width="405" height="26">
<font color="#454545" face="Arial">&nbsp;Recombinant Human Granulocyte Macrophage Colony Stimulating Factor</font></td>
<td bgcolor="#E8F9BF" width="61" height="26">
<font face="Arial" color="#454545">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
<a target="_blank" href="pdf/GM-CSF%20(CRP0808).pdf">
<img border="0" src="proteinexpression_files/pdf.gif" width="15" height="15"></a></font></td>
<td bgcolor="#E8F9BF" height="26">
<font color="#454545" face="Arial">&nbsp;<a href="http://www.creative-biolabs.com/contactus.htm">Contact us</a></font></td>
</tr>

</table>取出红色文字内容

Answer 1

(?is)<td\b[^>]*?bgcolor="#E8F9BF"[^>]*?>[\s\S]*?<a\s*href="(?<href>[^"]*?)"[^>]*?>string Html="你的Html源码";
List<string> list=new List<string>();
foreach(Match m in Regex.Matches(Html,@"(?is)<td\b[^>]*?bgcolor=""#E8F9BF""[^>]*?>[\s\S]*?<a\s*href=""(?<href>[^""]*?)""[^>]*?>
"))
{
  list.Add(m.Groups["href"].Value);//list中就是你要的
}

Answer 2

            StreamReader reader = new StreamReader("c:\\temp\\1.txt",Encoding.Default);
            string source =reader.ReadToEnd();
            Regex reg = new Regex(@"(?is)(<a href="")[^>/]+(?=""><u>)");
            MatchCollection mc = reg.Matches(source);
            foreach (Match m in mc)
            {
                MessageBox.Show(m.Value);
            }