//test Regex
string content = "";
string outHtml = "";
Regex regex;
Match mc;
StreamReader sr = new StreamReader("c:\\a.txt",System.Text.Encoding.GetEncoding("gb2312"));
content = sr.ReadToEnd();
content = content.Replace("\"","'");
//开始用正则表达式取出图片文件名
//regex = new Regex("class=\"text02\">(?<CityName>.*)</div>");
regex = new Regex(@"(\s*)<td width='105' bgcolor='F6F6F6' class='text02'>(\s*)(?<CityName>.*)(\s*)</td>(\s*)<td width='55' align='center' bgcolor='F6F6F6'>(\s*)(?<weather>.*)(\s*)</td>",RegexOptions.Compiled);
outHtml += "<table widht=100% border=1 bgcolor=d7d7d7>";
outHtml += "<tr><td colspan=10>test</td></tr>";
for (mc = regex.Match(content); mc.Success; mc = mc.NextMatch())
{
outHtml += "<tr><td>城市：</td><td>" + mc.Groups["CityName"].Value + "</td><td>" + mc.Groups["weather"].Value + "</d></tr>";
}
outHtml += "</table>";
Response.Write(outHtml);
*******************************
关键的一个地方是：
<tr><td>之间必须用(\s*)来表示，这个表示无限个空格，否则匹配不到，COOL
