WinForm使用正则表达式提取内容的方法示例
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2023-11-12 19:35:34
本文实例讲述了winform使用正则表达式提取内容的方法。分享给大家供大家参考,具体如下:
用vs新建winform程序,窗体上是三个文本框和一个按钮。
可以自己构造正...
本文实例讲述了winform使用正则表达式提取内容的方法。分享给大家供大家参考,具体如下:
用vs新建winform程序,窗体上是三个文本框和一个按钮。
可以自己构造正则表达式,自己修改匹配内容
正则表达是要提取的部分为hewenqitext
代码如下:
using system; using system.text.regularexpressions; using system.windows.forms; namespace hovertreebatch.hovertree { public partial class regexform : form { public regexform() { initializecomponent(); textbox_regex.text = @"<img\b[^<>]*?\bsrc[\s\t\r\n]*=[\s\t\r\n]*[""']?[\s\t\r\n]*(?<hewenqitext>[^\s\t\r\n""'<>]*)[^<>]*?/?[\s\t\r\n]*>"; textbox_content.text = @"<div class=""dengxaing-hovertree-com""><a title=""批量2"" href=""http://localhost/hvtimg/201601/p3t2ldyr.png" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201601/p3t2ldyr_l.png"" style=""width:180px;height:140px;"" /></a><a title=""vs2015开发人员命令提示查看publickeytoken(公钥标记)"" href=""http://localhost/hvtimg/201601/wn0bamxp.png" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201601/wn0bamxp_l.png"" style=""width:180px;height:140px;"" /></a><a title=""消灭僵尸游戏"" href=""http://localhost/hvtimg/201601/q47add2k.jpg" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201601/q47add2k_l.jpg"" style=""width:180px;height:140px;"" /></a><a title=""纯css3漂亮的房子不错的天气"" href=""http://localhost/hvtimg/201601/lbau8hqb.png" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201601/lbau8hqb_l.png"" style=""width:180px;height:140px;"" /></a><a title=""hoverclock"" href=""http://localhost/hvtimg/201601/thbniyjx.png" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201601/thbniyjx_l.png"" style=""width:180px;height:140px;"" /></a><a title=""javascript元旦倒计时特效"" href=""http://localhost/hvtimg/201512/o9qashmi.gif" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201512/o9qashmi_l.gif"" style=""width:180px;height:140px;"" /></a><a title=""下雨"" href=""http://localhost/hvtimg/201512/f748s0ko.jpg" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201512/f748s0ko_l.jpg"" style=""width:180px;height:140px;"" /></a><a title=""直接说喜欢你!"" href=""http://localhost/hvtimg/201512/vt1tf0xl.jpg" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201512/vt1tf0xl_l.jpg"" style=""width:180px;height:140px;"" /></a><a title=""iis7,iis7.5 url重写模块工具"" href=""http://localhost/hvtimg/201512/ew4yb78b.png" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201512/ew4yb78b_l.png"" style=""width:180px;height:140px;"" /></a><a title=""山水画"" href=""http://localhost/hvtimg/201512/agagq0or.jpg" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201512/agagq0or_l.jpg"" style=""width:180px;height:140px;"" /></a><a title=""刘德华"" href=""http://localhost/hvtimg/201512/r51a22uy.gif" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201512/r51a22uy_l.gif"" style=""width:180px;height:140px;"" /></a><a title=""iis为网站设置域名"" href=""http://localhost/hvtimg/201512/69yoeuhf.jpg" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201512/69yoeuhf_l.jpg"" style=""width:180px;height:140px;"" /></a><a title=""hovertreecms分成"" href=""http://localhost/hvtimg/201512/jgi94fdf.png" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201512/jgi94fdf_l.png"" style=""width:180px;height:140px;"" /></a><a title=""范冰冰"" href=""http://localhost/hvtimg/201511/6j9j6tk5.png" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201511/6j9j6tk5_l.png"" style=""width:180px;height:140px;"" /></a><a title=""周末愉快"" href=""http://localhost/hvtimg/201511/60mj4wsb.gif" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201511/60mj4wsb_l.gif"" style=""width:180px;height:140px;"" /></a><a title=""谢霆锋手机背景图"" href=""http://localhost/hvtimg/201508/cnvkv745.jpg" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201508/cnvkv745_l.jpg"" style=""width:180px;height:140px;"" /></a><a title=""现代舞舞蹈家玛莎·葛兰姆动画logo"" href=""http://localhost/hvtimg/201506/ufigfjvn.jpg" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201506/ufigfjvn_l.jpg"" style=""width:180px;height:140px;"" /></a><a title=""每次吵架,都希望男票这样解决战斗。。。"" href=""http://localhost/hvtimg/201506/iqoqrhfn.gif" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201506/iqoqrhfn_l.gif"" style=""width:180px;height:140px;"" /></a><a title=""现代舞舞蹈家玛莎·葛兰姆动画logo"" href=""http://localhost/hvtimg/201506/xlyxp4wg.png" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201506/xlyxp4wg_l.png"" style=""width:180px;height:140px;"" /></a><a title=""美女"" href=""http://localhost/hvtimg/201506/m921jw4n.jpg" rel="external nofollow" rel="external nofollow" "><img src=""http://localhost/hvtimg/201506/m921jw4n_l.jpg"" style=""width:180px;height:140px;"" /></a></div>"; } private void button_ok_click(object sender, eventargs e) { regex m_hvtregimg = new regex(textbox_regex.text, regexoptions.ignorecase); //搜索匹配的字符串 matchcollection hewenqi_matches; try { hewenqi_matches = m_hvtregimg.matches(textbox_content.text); // 取得匹配项列表 foreach (match match in hewenqi_matches) { textbox_result.text = textbox_result.text + match.groups["hewenqitext"].value + "\r\n"; } } catch (exception ex) { textbox_result.text = ex.tostring(); } } } } /* <div class="dengxaing-hovertree-com"> <a title="批量2" href=""http://localhost/hvtimg/201601/p3t2ldyr.png" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201601/p3t2ldyr_l.png"" style="width:180px;height:140px;" /></a> <a title="vs2015开发人员命令提示查看publickeytoken(公钥标记)" href=""http://localhost/hvtimg/201601/wn0bamxp.png" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201601/wn0bamxp_l.png"" style="width:180px;height:140px;" /></a> <a title="消灭僵尸游戏" href=""http://localhost/hvtimg/201601/q47add2k.jpg" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201601/q47add2k_l.jpg"" style="width:180px;height:140px;" /></a> <a title="纯css3漂亮的房子不错的天气" href=""http://localhost/hvtimg/201601/lbau8hqb.png" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201601/lbau8hqb_l.png"" style="width:180px;height:140px;" /></a> <a title="hoverclock" href=""http://localhost/hvtimg/201601/thbniyjx.png" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201601/thbniyjx_l.png"" style="width:180px;height:140px;" /></a> <a title="javascript元旦倒计时特效" href=""http://localhost/hvtimg/201512/o9qashmi.gif" rel="external nofollow" rel="external nofollow" > <img src=""http://localhost/hvtimg/201512/o9qashmi_l.gif" style="width:180px;height:140px;" /></a> <a title="下雨" href=""http://localhost/hvtimg/201512/f748s0ko.jpg" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201512/f748s0ko_l.jpg"" style="width:180px;height:140px;" /></a> <a title="直接说喜欢你!" href=""http://localhost/hvtimg/201512/vt1tf0xl.jpg" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201512/vt1tf0xl_l.jpg"" style="width:180px;height:140px;" /></a> <a title="iis7,iis7.5 url重写模块工具" href=""http://localhost/hvtimg/201512/ew4yb78b.png" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201512/ew4yb78b_l.png"" style="width:180px;height:140px;" /></a> <a title="山水画" href=""http://localhost/hvtimg/201512/agagq0or.jpg" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201512/agagq0or_l.jpg"" style="width:180px;height:140px;" /></a> <a title="刘德华" href=""http://localhost/hvtimg/201512/r51a22uy.gif" rel="external nofollow" rel="external nofollow" > <img src=""http://localhost/hvtimg/201512/r51a22uy_l.gif" style="width:180px;height:140px;" /></a> <a title="iis为网站设置域名" href=""http://localhost/hvtimg/201512/69yoeuhf.jpg" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201512/69yoeuhf_l.jpg"" style="width:180px;height:140px;" /></a> <a title="hovertreecms分成" href=""http://localhost/hvtimg/201512/jgi94fdf.png" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201512/jgi94fdf_l.png"" style="width:180px;height:140px;" /></a> <a title="范冰冰" href=""http://localhost/hvtimg/201511/6j9j6tk5.png" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201511/6j9j6tk5_l.png"" style="width:180px;height:140px;" /></a> <a title="周末愉快" href=""http://localhost/hvtimg/201511/60mj4wsb.gif" rel="external nofollow" rel="external nofollow" > <img src=""http://localhost/hvtimg/201511/60mj4wsb_l.gif" style="width:180px;height:140px;" /></a> <a title="谢霆锋手机背景图" href=""http://localhost/hvtimg/201508/cnvkv745.jpg" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201508/cnvkv745_l.jpg"" style="width:180px;height:140px;" /></a> <a title="现代舞舞蹈家玛莎·葛兰姆动画logo" href=""http://localhost/hvtimg/201506/ufigfjvn.jpg" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201506/ufigfjvn_l.jpg"" style="width:180px;height:140px;" /></a> <a title="每次吵架,都希望男票这样解决战斗。。。" href=""http://localhost/hvtimg/201506/iqoqrhfn.gif" rel="external nofollow" rel="external nofollow" > <img src=""http://localhost/hvtimg/201506/iqoqrhfn_l.gif" style="width:180px;height:140px;" /></a> <a title="现代舞舞蹈家玛莎·葛兰姆动画logo" href=""http://localhost/hvtimg/201506/xlyxp4wg.png" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201506/xlyxp4wg_l.png"" style="width:180px;height:140px;" /></a> <a title="美女" href=""http://localhost/hvtimg/201506/m921jw4n.jpg" rel="external nofollow" rel="external nofollow" "> <img src=""http://localhost/hvtimg/201506/m921jw4n_l.jpg"" style="width:180px;height:140px;" /></a> </div> */
ps:这里再为大家提供2款非常方便的正则表达式工具供大家参考使用:
javascript正则表达式在线测试工具:
正则表达式在线生成工具:
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