取如下字符的正则。

[米娜Rose]

        //我要取的<td class="f">与<font size="-1">中间的所有字符
        //<td class="f">
        //<a onmousedown="return c({'fm':'as','F':'779717EA','F1':'9D73F1E4','F2':'4CA6BD6B','F3':'54E5243F','T':'1280366852','title':this.innerHTML,'url':this.href,'p1':1,'y':'EFBD37AD'})"
        //    href=" http://www.tianya.cn/publicforum/Content/free/1/459738.shtml" target="_blank">
        //    <font size="3">今天在<em>深圳</em>201路<em>公交车</em>上，看见二个女白领<em>逃票</em>_天涯杂谈_天涯社区</font></a><br>
        //    <font size="-1">

[兔子-顾问]

(?is)<td class="f">.+?<font size="-1">

[wen158809179]

static void Main(string[] args)
{
string str = "<td class=\"f\">与asdfsdf<font size=\"-1\">";
Regex reg = new Regex("<td class=\"f\">(.*?)<font size=\"-1\">");
Console.WriteLine(reg.Matches(str)[0].Result("$1"));
}

[xuxuchen]

高人们帮我看看吧 http://topic.csdn.net/u/20100729/09/3331693a-0378-4473-a2f2-dfe98fcf2e91.html

[兔子-顾问]

public static void TestRegex10()
{
    string test = @" //<td class=""f"">
//<a onmousedown=""return c({'fm':'as','F':'779717EA','F1':'9D73F1E4','F2':'4CA6BD6B','F3':'54E5243F','T':'1280366852','title':this.innerHTML,'url':this.href,'p1':1,'y':'EFBD37AD'})""
//    href="" http://www.tianya.cn/publicforum/Content/free/1/459738.shtml"" target=""_blank"">
//    <font size=""3"">今天在<em>深圳</em>201路<em>公交车</em>上，看见二个女白领<em>逃票</em>_天涯杂谈_天涯社区</font></a><br>
//    <font size=""-1"">
";
    MatchCollection mc = Regex.Matches(test, @"(?is)(?<=<td class=""f"">).+?(?=<font size=""-1"">)");
    foreach (Match m in mc)
    {
        Console.WriteLine(m.Value);
    }
}

[米娜Rose]

逍遥兄，我用Regex.Matches( userInput, WebText, RegexOptions.IgnoreCase);没有取到数据呢
使用最简单的正则可以取到数据。我没有用错吧？

[zengbingling]

MatchCollection mc = Regex.Matches(test, @"(?is)(?<=<td class=""f"">).+?(?=<font size=""-1"">)");写法错误

[zengbingling]

吧""改成\"

[zengbingling]

Regex reg = new Regex(@"<td class=""f"">(.*)<font size=""-1"">");
Match amt= reg.Match(test);
string value=amt.Result("$1");

[米娜Rose]

[Quote=引用 7 楼 zengbingling 的回复:]
MatchCollection mc = Regex.Matches(test, @"(?is)(?<=<td class=""f"">).+?(?=<font size=""-1"">)");写法错误
[/Quote]

这为大哥我试过是正确的。

[mamudelingling]

路过 帮顶 正则学习中