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string str = "<span class=\"level\"><span class=\"textlabel\">任意长字符串,后面有空格 </span>1</span>";
Regex num = new Regex(@"(?<=(<span\sclass=""textlabel"").*?(</span>)).*?</span>",RegexOptions.Singleline);
Match m = num.Match(str);
if (m.Success) {
Response.Write(m.Value);
}
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<title>Andromeda</title>
</head>
<body id="resources">
<div id="boxBG">
<div id="box">
<div id="links">
<div id="toolLinksWrapper">
</div>
<br class="clearfloat" />
</div>
<div id="inhalt">
<div id="buttonz">
<h2>
資源建築
</h2>
<ul id="building">
<li id="button1" class="on">
<div class="supply1">
<div class="buildingimg">
<a class="fastBuild tipsStandard" title="|升級 金屬礦 至 3 級" href="javascript:void(0);"
onclick="sendBuildRequest('http://uni101.ogame.tw/game/index.php?page=resources&modus=1&type=1&menge=1&token=2a6dba6e36336e12dd094d09cbda3e3f');">
<img src="http://gf2.geo.gfsrv.net/cdndf/3e567d6f16d040326c7a0ea29a4f41.gif" width="22"
height="14" />
</a><a class="detail_button tipsStandard slideIn" title="|金屬礦" ref="1" id="details"
href="javascript:void(0);"><span class="ecke"><span class="level"><span class="textlabel">
金屬礦 </span>2 </span></span></a>
</div>
</div>
</li>
<li id="button2" class="on">
<div class="supply2">
<div class="buildingimg">
<a class="fastBuild tipsStandard" title="|升級 晶體礦 至 2 級" href="javascript:void(0);"
onclick="sendBuildRequest('http://uni101.ogame.tw/game/index.php?page=resources&modus=1&type=2&menge=1&token=2a6dba6e36336e12dd094d09cbda3e3f');">
<img src="http://gf2.geo.gfsrv.net/cdndf/3e567d6f16d040326c7a0ea29a4f41.gif" width="22"
height="14" />
</a><a class="detail_button tipsStandard slideIn" title="|晶體礦" ref="2" id="details"
href="javascript:void(0);"><span class="ecke"><span class="level"><span class="textlabel">
晶體礦 </span>1 </span></span></a>
</div>
</div>
</li>
<li id="button3" class="on">
<div class="supply3">
<div class="buildingimg">
<a class="fastBuild tipsStandard" title="|升級 重氫合成器 至 2 級" href="javascript:void(0);"
onclick="sendBuildRequest('http://uni101.ogame.tw/game/index.php?page=resources&modus=1&type=3&menge=1&token=2a6dba6e36336e12dd094d09cbda3e3f');">
<img src="http://gf2.geo.gfsrv.net/cdndf/3e567d6f16d040326c7a0ea29a4f41.gif" width="22"
height="14" />
</a><a class="detail_button tipsStandard slideIn" title="|重氫合成器" ref="3" id="details"
href="javascript:void(0);"><span class="ecke"><span class="level"><span class="textlabel">
重氫合成器 </span>1 </span></span></a>
</div>
</div>
</li>
</ul>
</div>
</div>
</div>
<div class="push">
</div>
</div>
</body>
</html>
string source = "<span class=\"level\"><span class=\"textlabel\">任意长字符串,后面有空格 </span>1</span>";
Regex reg = new Regex(@"(?is)<span[^>]*><span[^>]*>.*?</span>(.*?)</span>");
Match mm = reg.Match(source);
MessageBox.Show(mm.Groups[1].Value);
/*
1
*/
string source = "你得字符串";
Regex reg = new Regex(@"</span>(?<value>[\d]?)</span>");
Match mm = reg.Match(source);
MessageBox.Show(mm.Groups["value"].Value);