Regular Expressions 101

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An explanation of your regex will be automatically generated as you type.
Detailed match information will be displayed here automatically.
  • All Tokens
  • Common Tokens
  • General Tokens
  • Anchors
  • Meta Sequences
  • Quantifiers
  • Group Constructs
  • Character Classes
  • Flags/Modifiers
  • Substitution
  • A single character of: a, b or c
    [abc]
  • A character except: a, b or c
    [^abc]
  • A character in the range: a-z
    [a-z]
  • A character not in the range: a-z
    [^a-z]
  • A character in the range: a-z or A-Z
    [a-zA-Z]
  • Any single character
    .
  • Alternate - match either a or b
    a|b
  • Any whitespace character
    \s
  • Any non-whitespace character
    \S
  • Any digit
    \d
  • Any non-digit
    \D
  • Any word character
    \w
  • Any non-word character
    \W
  • Non-capturing group
    (?:...)
  • Capturing group
    (...)
  • Zero or one of a
    a?
  • Zero or more of a
    a*
  • One or more of a
    a+
  • Exactly 3 of a
    a{3}
  • 3 or more of a
    a{3,}
  • Between 3 and 6 of a
    a{3,6}
  • Start of string
    ^
  • End of string
    $
  • A word boundary
    \b
  • Non-word boundary
    \B

Regular Expression
No Match

/
/
gm

Test String

Substitution

Processing...

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(.*-.*?<br>.*)"; string substitution = @"$1"; string input = @"<div class=""post hentry"" itemprop=""blogPost"" itemscope=""itemscope"" itemtype=""http://schema.org/BlogPosting""> <meta content=""http://2.bp.blogspot.com/-Xr8J0BgpT-Y/U0r8PrjYqkI/AAAAAAAAAZs/HqpN2aM1dMM/s1600/IMG_4494.jpg"" itemprop=""image_url""> <meta content=""4117404407927449930"" itemprop=""blogId""> <meta content=""4496590050094219863"" itemprop=""postId""> <a name=""4496590050094219863""></a> <h3 class=""post-title entry-title"" itemprop=""name""> <a href=""http://kaszomania.blogspot.com/2014/04/roso-z-kasza-jaglana.html"">Rosół z kaszą jaglaną</a> </h3> <div style=""float: none;""> <iframe allowtransparency=""true"" frameborder=""0"" scrolling=""no"" src=""http://www.facebook.com/plugins/like.php?href=http://kaszomania.blogspot.com/2014/04/roso-z-kasza-jaglana.html&amp;send=false&amp;layout=standard&amp;show_faces=false&amp;width=450&amp;action=like&amp;font=arial&amp;colorscheme=light&amp;height=35"" style=""border:none; overflow:hidden; width:450px; height:35px;""></iframe> </div> <div class=""post-header""> <div class=""post-header-line-1""></div> </div> <div class=""post-body entry-content"" id=""post-body-4496590050094219863"" itemprop=""description articleBody""> <div style=""text-align: justify;""> Jak mawia Ferdek Kiepski - <i>bez mięsa człowiek daleko nie zajedzie...</i> Oczywiście dzisiejszy wpis nie będzie tematem rozważań na temat prawdziwości lub też nie tego stwierdzenia. Nie zmienia to faktu, że każdy czasem lubi zjeść rosół z kury. :) Rosół jest bombą witaminową doskonałą na przeziębienie, a dodatek w postaci kaszy jaglanej nie tylko urozmaici potrawę, ale także podniesie jej walory zdrowotne. Jak dla mnie ziemniaki oraz wszelkie makarony wymiękają przy kaszy jaglanej. ;)</div> <br> <div class=""separator"" style=""clear: both; text-align: center;""> <a href=""http://2.bp.blogspot.com/-Xr8J0BgpT-Y/U0r8PrjYqkI/AAAAAAAAAZs/HqpN2aM1dMM/s1600/IMG_4494.jpg"" imageanchor=""1"" style=""margin-left: 1em; margin-right: 1em;""><img alt=""Rosół z kaszą jaglaną"" border=""0"" src=""http://2.bp.blogspot.com/-Xr8J0BgpT-Y/U0r8PrjYqkI/AAAAAAAAAZs/HqpN2aM1dMM/s1600/IMG_4494.jpg"" height=""358"" title=""Rosół z kaszą jaglaną"" width=""640""></a></div> <br> Składniki:<br> - kasza jaglana <br> - 4-5 udek z kurczaka<br> - włoszczyzna: korzeń pietruszki, marchewka, seler, por (ja kupuję gotową w biedronce)<br> - cebula<br> - natka pietruszki<br> - sól<br> - pieprz<br> - ziele angielskie<br> - liść laurowy<br> - ok. 2 litry wody<br> <br> <div class=""separator"" style=""clear: both; text-align: center;""> <a href=""http://1.bp.blogspot.com/-MD-NFwHYAVE/U0r8OjOlbEI/AAAAAAAAAZg/sG6n3tuxN2o/s1600/IMG_4458.jpg"" imageanchor=""1"" style=""margin-left: 1em; margin-right: 1em;""><img alt=""Rosół z kaszą jaglaną"" border=""0"" src=""http://1.bp.blogspot.com/-MD-NFwHYAVE/U0r8OjOlbEI/AAAAAAAAAZg/sG6n3tuxN2o/s1600/IMG_4458.jpg"" height=""358"" title=""Rosół z kaszą jaglaną"" width=""640""></a></div> <br> <div class=""separator"" style=""clear: both; text-align: center;""> <a href=""http://2.bp.blogspot.com/-pq7Nvs_5I7Y/U0r8O8pfgLI/AAAAAAAAAZo/qfJja3ewbcg/s1600/IMG_4491.jpg"" imageanchor=""1"" style=""margin-left: 1em; margin-right: 1em;""><img alt=""Rosół z kaszą jaglaną"" border=""0"" src=""http://2.bp.blogspot.com/-pq7Nvs_5I7Y/U0r8O8pfgLI/AAAAAAAAAZo/qfJja3ewbcg/s1600/IMG_4491.jpg"" height=""358"" title=""Rosół z kaszą jaglaną"" width=""640""></a></div> <ol style=""text-align: justify;""> <li>Gotujemy kaszę jaglaną na sypko (z dodatkiem soli).</li> <li>Myjemy udka i wrzucamy do gara. Zalewamy ok 2 litrami zimnej wody i doprowadzamy do wrzenia. Gotujemy na bardzo małym ogniu. Zbieramy tzw. szumowiny.</li> <li>Kroimy warzywa. Seler w kostkę. Marchewkę, korzeń pietruszki, pora w paski. Cebulę kroimy na dwie połówki. Wszystkie warzywa wrzucamy do gara i dalej gotujemy.</li> <li>Dodajemy przyprawy - sól, pieprz, liść laurowy, ziele angielskie, natkę pietruszki w całości.</li> <li>Pozostawiamy rosół aby ""pyrkał :D"" się przez ok. 1,5 godziny. Jeżeli zbyt mało doprawiliście możecie w międzyczasie dodawać przyprawy i sprawdzać smak.</li> <li>Rosół jest gotowy, kiedy zacznie smakować jak rosół i kiedy warzywa będą wystarczająco miękkie. Nie wyrzucamy z rosołu żadnych warzyw. To barbarzyństwo!!!:)</li> <li>Przed podaniem, do miseczki wsypujemy kaszę jaglaną, a następnie całość zalewamy gorącym rosołem.</li> </ol> <div style=""text-align: justify;""> SMACZNEGO! :) </div> <br> <div class=""separator"" style=""clear: both; text-align: center;""> <a href=""http://2.bp.blogspot.com/-Xr8J0BgpT-Y/U0r8PrjYqkI/AAAAAAAAAZ0/6KtSzSwbqYA/s1600/IMG_4494.jpg"" imageanchor=""1"" style=""margin-left: 1em; margin-right: 1em;""><img alt=""Rosół z kaszą jaglaną"" border=""0"" src=""http://2.bp.blogspot.com/-Xr8J0BgpT-Y/U0r8PrjYqkI/AAAAAAAAAZ0/6KtSzSwbqYA/s1600/IMG_4494.jpg"" height=""358"" title=""Rosół z kaszą jaglaną"" width=""640""></a></div> <br> <br> <div style=""clear: both;""></div> <div id=""lws_0""><div class=""linkwithin_outer"" style=""margin: 0; border: 0; padding: 0; clear: both; ""> <div id=""linkwithin_inner"" class=""linkwithin_inner"" style="" margin: 0; border: 0; padding: 0; width: 596px; ""> <div class=""linkwithin_text"" id=""linkwithin_text_0"" style="" margin: 0; border: 0; padding: 20px 0 5px; text-align: left; font-weight: bold; "">Inne dania z kaszą:</div> <div class=""linkwithin_posts"" id=""linkwithin_posts_0"" style=""margin: 0; border: 0; padding: 0""> <a name=""linkwithin_link_0"" href=""http://kaszomania.blogspot.com/2014/03/kasza-jaglana-z-warzywami-na-patelnie.html"" onmousedown=""this.href='http://widget6.linkwithin.com/redirect?url=http%3A//kaszomania.blogspot.com/2014/03/kasza-jaglana-z-warzywami-na-patelnie.html&amp;rtype=&amp;vars=%5B%22http%3A//kaszomania.blogspot.com/search/label/zupy%22%2C%202065963%2C%200%2C%20%22http%3A//kaszomania.blogspot.com/2014/04/roso-z-kasza-jaglana.html%22%2C%20383537545%2C%200%2C%20383537563%5D&amp;ts=' + (new Date()).getTime(); return true;"" style="" display: block; float: left; border-bottom: none; margin: 0; padding: 6px; text-decoration: none; text-align: left; cursor: pointer; "" onmouseover=""this.style.backgroundColor='#dde'"" onmouseout=""this.style.backgroundColor=''""> <div style=""width: 106px; height: 165px; margin: 0; border: 0; padding: 0""> <div class=""linkwithin_img_0"" style="" margin: 0; border: 1px solid #ddd; padding: 2px; width: auto; height: auto; ""> <div style=""background: url(http://images3.linkwithin.com/images/383537563.jpg) no-repeat; width: 100px; height: 100px; margin: 0; border: 0; padding: 0""></div> </div> <div class=""linkwithin_title linkwithin_title_0"" style=""margin: 3px 0px 0px; border: 0px; padding: 0px; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-family: arial; color: rgb(102, 102, 102);""> Kasza jaglana z warzywami na patelnię </div> </div> </a> <a name=""linkwithin_link_0"" href=""http://kaszomania.blogspot.com/2014/01/saatka-z-kaszy-jaglanej-i-ososia.html"" onmousedown=""this.href='http://widget6.linkwithin.com/redirect?url=http%3A//kaszomania.blogspot.com/2014/01/saatka-z-kaszy-jaglanej-i-ososia.html&amp;rtype=&amp;vars=%5B%22http%3A//kaszomania.blogspot.com/search/label/zupy%22%2C%202065963%2C%200%2C%20%22http%3A//kaszomania.blogspot.com/2014/04/roso-z-kasza-jaglana.html%22%2C%20383537545%2C%201%2C%20352602665%5D&amp;ts=' + (new Date()).getTime(); return true;"" style="" display: block; float: left; border-left: 1px solid #ddd; border-bottom: none; margin: 0; padding: 6px; text-decoration: none; text-align: left; cursor: pointer; "" onmouseover=""this.style.backgroundColor='#dde'"" onmouseout=""this.style.backgroundColor=''""> <div style=""width: 106px; height: 165px; margin: 0; border: 0; padding: 0""> <div class=""linkwithin_img_0"" style="" margin: 0; border: 1px solid #ddd; padding: 2px; width: auto; height: auto; ""> <div style=""background: url(http://images3.linkwithin.com/images/352602665.jpg) no-repeat; width: 100px; height: 100px; margin: 0; border: 0; padding: 0""></div> </div> <div class=""linkwithin_title linkwithin_title_0"" style=""margin: 3px 0px 0px; border: 0px; padding: 0px; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-family: arial; color: rgb(102, 102, 102);""> Sałatka z kaszy jaglanej i łososia </div> </div> </a> <a name=""linkwithin_link_0"" href=""http://kaszomania.blogspot.com/2014/03/kasza-jaglana-z-bananowym-gulaszem.html"" onmousedown=""this.href='http://widget6.linkwithin.com/redirect?url=http%3A//kaszomania.blogspot.com/2014/03/kasza-jaglana-z-bananowym-gulaszem.html&amp;rtype=&amp;vars=%5B%22http%3A//kaszomania.blogspot.com/search/label/zupy%22%2C%202065963%2C%200%2C%20%22http%3A//kaszomania.blogspot.com/2014/04/roso-z-kasza-jaglana.html%22%2C%20383537545%2C%202%2C%20383537567%5D&amp;ts=' + (new Date()).getTime(); return true;"" style="" display: block; float: left; border-left: 1px solid #ddd; border-bottom: none; margin: 0; padding: 6px; text-decoration: none; text-align: left; cursor: pointer; "" onmouseover=""this.style.backgroundColor='#dde'"" onmouseout=""this.style.backgroundColor=''""> <div style=""width: 106px; height: 165px; margin: 0; border: 0; padding: 0""> <div class=""linkwithin_img_0"" style="" margin: 0; border: 1px solid #ddd; padding: 2px; width: auto; height: auto; ""> <div style=""background: url(http://images3.linkwithin.com/images/383537567.jpg) no-repeat; width: 100px; height: 100px; margin: 0; border: 0; padding: 0""></div> </div> <div class=""linkwithin_title linkwithin_title_0"" style=""margin: 3px 0px 0px; border: 0px; padding: 0px; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-family: arial; color: rgb(102, 102, 102);""> Kasza jaglana z bananowym gulaszem </div> </div> </a> <a name=""linkwithin_link_0"" href=""http://kaszomania.blogspot.com/2014/02/zupa-krem-z-kaszy-jaglanej-i-szpinaku.html"" onmousedown=""this.href='http://widget6.linkwithin.com/redirect?url=http%3A//kaszomania.blogspot.com/2014/02/zupa-krem-z-kaszy-jaglanej-i-szpinaku.html&amp;rtype=&amp;vars=%5B%22http%3A//kaszomania.blogspot.com/search/label/zupy%22%2C%202065963%2C%200%2C%20%22http%3A//kaszomania.blogspot.com/2014/04/roso-z-kasza-jaglana.html%22%2C%20383537545%2C%203%2C%20383537577%5D&amp;ts=' + (new Date()).getTime(); return true;"" style="" display: block; float: left; border-left: 1px solid #ddd; border-bottom: none; margin: 0; padding: 6px; text-decoration: none; text-align: left; cursor: pointer; "" onmouseover=""this.style.backgroundColor='#dde'"" onmouseout=""this.style.backgroundColor=''""> <div style=""width: 106px; height: 165px; margin: 0; border: 0; padding: 0""> <div class=""linkwithin_img_0"" style="" margin: 0; border: 1px solid #ddd; padding: 2px; width: auto; height: auto; ""> <div style=""background: url(http://images3.linkwithin.com/images/383537577.jpg) no-repeat; width: 100px; height: 100px; margin: 0; border: 0; padding: 0""></div> </div> <div class=""linkwithin_title linkwithin_title_0"" style=""margin: 3px 0px 0px; border: 0px; padding: 0px; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-family: arial; color: rgb(102, 102, 102);""> Zupa krem z kaszy jaglanej i szpinaku </div> </div> </a> <a name=""linkwithin_link_0"" href=""http://kaszomania.blogspot.com/2014/01/zupa-krem-z-kukurydzy-i-kaszy-jaglanej.html"" id=""linkwithin_link_last"" onmousedown=""this.href='http://widget6.linkwithin.com/redirect?url=http%3A//kaszomania.blogspot.com/2014/01/zupa-krem-z-kukurydzy-i-kaszy-jaglanej.html&amp;rtype=&amp;vars=%5B%22http%3A//kaszomania.blogspot.com/search/label/zupy%22%2C%202065963%2C%200%2C%20%22http%3A//kaszomania.blogspot.com/2014/04/roso-z-kasza-jaglana.html%22%2C%20383537545%2C%204%2C%20383537619%5D&amp;ts=' + (new Date()).getTime(); return true;"" style="" display: block; float: left; border-left: 1px solid #ddd; border-bottom: none; margin: 0; padding: 6px; text-decoration: none; text-align: left; cursor: pointer; "" onmouseover=""this.style.backgroundColor='#dde'"" onmouseout=""this.style.backgroundColor=''""> <div style=""width: 106px; height: 165px; margin: 0; border: 0; padding: 0""> <div class=""linkwithin_img_0"" style="" margin: 0; border: 1px solid #ddd; padding: 2px; width: auto; height: auto; ""> <div style=""background: url(http://images3.linkwithin.com/images/383537619.jpg) no-repeat; width: 100px; height: 100px; margin: 0; border: 0; padding: 0""></div> </div> <div class=""linkwithin_title linkwithin_title_0"" style=""margin: 3px 0px 0px; border: 0px; padding: 0px; font-style: normal; font-variant: normal; font-weight: normal; font-size: 12px; line-height: normal; font-family: arial; color: rgb(102, 102, 102);""> Zupa krem z kukurydzy i kaszy jaglanej </div> </div> </a> </div> <div id=""linkwithin_logo_0"" style="" clear: both; margin: 0 0 20px 0; border: 0; padding: 5px 6px 0 0; text-align: right; ""> <a id=""linkwithin_logolink_0"" href=""http://www.linkwithin.com/learn?ref=widget"" style="" font: 10px arial; color: #bbb; text-decoration: none; border-bottom: none; "" onmouseover=""this.style.textDecoration='underline'"" onmouseout=""this.style.textDecoration='none'"" target=""_blank"">Linkwithin</a> </div> </div> </div></div></div> <div class=""post-footer""> <div class=""post-footer-line post-footer-line-1""><span class=""post-author vcard""> Autor: <span class=""fn"" itemprop=""author"" itemscope=""itemscope"" itemtype=""http://schema.org/Person""> <meta content=""http://www.blogger.com/profile/07377519070516761764"" itemprop=""url""> <a class=""g-profile"" href=""http://www.blogger.com/profile/07377519070516761764"" rel=""author"" title=""author profile"" data-gapiscan=""true"" data-onload=""true"" data-gapiattached=""true""> <span itemprop=""name"">Kaszomaniak</span> </a> </span> </span> <span class=""post-timestamp""> o <meta content=""http://kaszomania.blogspot.com/2014/04/roso-z-kasza-jaglana.html"" itemprop=""url""> <a class=""timestamp-link"" href=""http://kaszomania.blogspot.com/2014/04/roso-z-kasza-jaglana.html"" rel=""bookmark"" title=""permanent link""><abbr class=""published"" itemprop=""datePublished"" title=""2014-04-14T19:00:00+02:00"">19:00</abbr></a> </span> <span class=""post-comment-link""> <a class=""comment-link"" href=""http://kaszomania.blogspot.com/2014/04/roso-z-kasza-jaglana.html#comment-form"" onclick=""> 2 komentarze: </a> </span> <span class=""post-icons""> <span class=""item-control blog-admin pid-56923570""> <a href=""http://www.blogger.com/post-edit.g?blogID=4117404407927449930&amp;postID=4496590050094219863&amp;from=pencil"" title=""Edytuj post""> <img alt="" class=""icon-action"" height=""18"" src=""http://img2.blogblog.com/img/icon18_edit_allbkg.gif"" width=""18""> </a> </span> </span> <div class=""post-share-buttons goog-inline-block""> <a class=""goog-inline-block share-button sb-email"" href=""http://www.blogger.com/share-post.g?blogID=4117404407927449930&amp;postID=4496590050094219863&amp;target=email"" target=""_blank"" title=""Wyślij pocztą e-mail""><span class=""share-button-link-text"">Wyślij pocztą e-mail</span></a><a class=""goog-inline-block share-button sb-blog"" href=""http://www.blogger.com/share-post.g?blogID=4117404407927449930&amp;postID=4496590050094219863&amp;target=blog"" onclick=""window.open(this.href, &quot;_blank&quot;, &quot;height=270,width=475&quot;); 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RegexOptions options = RegexOptions.Multiline; Regex regex = new Regex(pattern, options); string result = regex.Replace(input, substitution); } }

Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx