求一正则表达式：匹配HTML的标签

[pcvc]

input:

string input = "据或<a href='http://www.csdn.net/net/' target='_blank' class='article'>信息</a>进行变据或<a href='http://www.csdn.net/server/' target='_blank'>Server息</a>进行变或<a href='http://www.csdn.net/abc.html' target='_blank'>信息Sver</a>进行变行变或<a href='http://www.csdn.net/server/diek/abc.html' target='_blank'>server abc test</a>进行变.";


能匹配到里面所有<a>标签。注意中英文

[路人乙e]

<a ([^>]+)>([^<]+)</a>

[-过客-]

try...

MatchCollection mc = Regex.Matches(yourStr, @"(?i)<a(?>(?:(?!href=)[^>])*)href=(['""]?)(?<url>[^""'\s>]*)\1[^>]*>(?<text>[\s\S]*?)</a>");
foreach (Match m in mc)
{
    richTextBox2.Text += m.Value + "\n";                //a标签
    richTextBox2.Text += m.Groups["url"].Value + "\n";  //url
    richTextBox2.Text += m.Groups["text"].Value + "\n"; //文字
}

[wuyq11]

MatchCollection mc = Regex.Matches(Str, @"<a(?:(?!href=)[\s\S])*href=(['""]?)(?<url>[^""'\s>]*)\1[^>]*>", RegexOptions.IgnoreCase);
foreach (Match m in mc)
{
richTextBox2.Text += m.Groups["url"].Value + "\n";
}
string resultStr = Regex.Replace(Str, @ "( <a\s+href= " ")[^ " "]*?(([^/]*?/){2}[^/]*?)( " "[^> ]*?> ) ", "$1$2$4 ", RegexOptions.IgnoreCase);

<A\s+(.*?)?href\s*=\s* "?(? <href> .*?) "?\s+(.*?)?>