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

/
/
gi

Test String

Code Generator

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"\/\/(?:[\w_-]+(?:(?:\.[\w_-]+)+))(?:[\w.,@?^=%&:\/~+#-]*[\w@?^=%&\/~+#-])?"; string input = @"<!DOCTYPE html> <html lang=""en""> <head> <!-- This beautiful and lightning fast landing page was proudly created with Leadpages ( see: https://www.leadpages.net ) and hosted on the Leadpages lead generation platform. --> <meta charset=""utf-8""> <meta name=""leadpages-served-by"" content=""leadpages""> <meta name=""leadpages-serving-domain"" content=""https://ixsystems.leadpages.co""> <meta name=""leadpages-stripe-public-key"" content=""pk_live_R3OLguBtmUzvjaKuwtOa7Kvp""> <meta name=""leadpages-merchant-uuid"" content=""kRYUiDye8gtbxvvVthNnkW""> <meta charset=""utf-8""> <script> window.AnalyticsPropertyID = ""rMx3rsBoVfadWMfoLN2z5n""; </script> <link rel=""stylesheet"" type=""text/css"" href=""https://ixsystems.leadpages.co/static/lp1483572580/public/css/leadpage.css""> <script> window.LeadPageData = { ""facebookShareURL"": { ""variable"": ""facebookShareURL"", ""dafault"": "", ""name"": ""The URL to share on Facebook. Leave blank to share the current page."" }, ""twitterShareURL"": { ""variable"": ""twitterShareURL"", ""dafault"": "", ""name"": ""The URL to share on Twitter. Leave blank to share the current page."" }, ""googleShareURL"": { ""variable"": ""googleShareURL"", ""dafault"": "", ""name"": ""The URL to share on Google+. Leave blank to share the current page."" }, ""linkedInShareURL"": { ""variable"": ""linkedInShareURL"", ""dafault"": "", ""name"": ""The URL to share on LinkedIn. Leave blank to share the current page."" } }; </script> <script type=""text/javascript"" src=""https://ixsystems.leadpages.co/static/lp1483572580/public/js/leadpage.js""></script> <meta http-equiv=""X-UA-Compatible"" content=""IE=edge,chrome=1""> <meta name=""viewport"" content=""width=device-width, initial-scale=1""> <style> @import url(https://maxcdn.bootstrapcdn.com/font-awesome/4.2.0/css/font-awesome.min.css); </style> <link href=""https://fonts.googleapis.com/css?family=Source+Sans+Pro:300,400,600"" rel=""stylesheet"" type=""text/css""> <link rel=""stylesheet"" href=""https://ixsystems.leadpages.co/f//w5N55HkAEv%252BpK6kOFyh0KJ%252BRqC3JrztqsFbxy0Bc0iNSQCQTWrQMlWdvEiLQEXpYt8gPbmjzAk3KS4AbwJdag%253D%253D%7Ccss/normalize.min.css""> <link rel=""stylesheet"" type=""text/css"" href=""https://ixsystems.leadpages.co/f//w5N55HkAEv%252BpK6kOFyh0KJ%252BRqC3JrztqsFbxy0Bc0hcHiFxsb3VUc6tIAt5lPy8NykuAG8CXWo%253D%7Ccss/style.css""> <script src=""https://ixsystems.leadpages.co/f//w5N55HkAEv%252BpK6kOFyh0KJ%252BRqC3JrztqsFbxy0Bc0jINLrZD2o7qCJeTqzOuwVVkqSGeDambc2fKvbfDci7Jg%253D%253D%7Cjs/html5shiv.js""></script> <script type=""text/javascript"" src=""http://www.omncdn.com/thankyou/CustomPage2/jeremyquinn/9/jquery.js""></script> <script type=""text/javascript"" src=""http://www.omncdn.com/thankyou/CustomPage2/jeremyquinn/9/modernizer.js""></script> <script type=""text/javascript"" src=""http://www.omncdn.com/thankyou/CustomPage2/jeremyquinn/9/function.js""></script> <link href=""http://www.omncdn.com/thankyou/CustomPage2/jeremyquinn/9/style.css"" type=""text/css"" rel=""stylesheet""> <style> .popup { width: 80%; margin: 0 auto } #pop-head .head { font-family: ""Open Sans Condensed""; font-size: 26px; color: #545555; font-weight: 700; line-height: 30px; text-align: center; margin: 20px auto 10px auto } .book-small { float: left; margin: -60px 10px 0 -50px } .popup input#fname, .popup input#email { width: 100%; height: 50px; font-size: 16px; line-height: 26px; color: #989898; padding: 0; margin: 5px auto; border: 1px solid #cacaca; text-align: center; -webkit-box-shadow: inset 1px 0px 10px 1px rgba(170, 170, 170, 0.3); box-shadow: inset 1px 0px 10px 1px rgba(170, 170, 170, 0.3) } #pop-footer { background-color: #d9d9d9; min-height: 57px; margin-top: 20px; padding-top: 10px; border-radius: 0 0 5px 5px; -webkit-border-radius: 0 0 5px 5px; -webkit-box-shadow: inset 0px 1px 5px 0px rgba(0, 0, 0, 0.2); box-shadow: inset 0px 1px 5px 0px rgba(0, 0, 0, 0.2) } #pop-footer p { font-size: 14px; color: #767677; text-align: center; margin-bottom: 0 } .popup .btn { font-family: 'Open Sans Condensed'; text-shadow: 1px 1px 1px rgba(0, 0, 0, 0.3); filter: dropshadow(color=rgba(0, 0, 0, 0.3), offx=1, offy=1); background: -webkit-gradient(linear, left top, left bottom, color-stop(0.05, #fed800), color-stop(1, #f5c800)); background: -moz-linear-gradient(center top, #fed800 5%, #f5c800 100%); filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#fed800', endColorstr='#f5c800'); background-color: #fed800; display: block; margin: 8px auto 0 auto; position: relative; min-height: 58px; width: 100%; font-weight: 700; font-size: 30px; color: #fdfdfd; border-radius: 3px; -webkit-border-radius: 3px; -moz-border-radius: 3px; border: none; padding: 10px 20px 15px; font-size: 30px; text-align: center } .popup .btn:hover { background: -webkit-gradient(linear, left top, left bottom, color-stop(0.05, #f5c800), color-stop(1, #fed800)); background: -moz-linear-gradient(center top, #f5c800 5%, #fed800 100%); filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#f5c800', endColorstr='#fed800'); background-color: #f5c800 } .popup .btn:active { position: relative; top: 1px } .popup .btn:after { content: '\00BB' } .pop-up-footer-text { font-family: 'Open Sans'; color: #505050; font-size: 14px; text-align: center; margin: 5px auto; padding: 0 } .reveal-modal-bg { position: fixed; height: 100%; width: 100%; background: #000; background: rgba(0, 0, 0, .8); z-index: 100; display: none; top: 0; left: 0 } .reveal-modal { visibility: hidden; top: 100px; left: 45%; margin-left: -300px; width: 714px; min-height: 200px; background: #fff no-repeat -200px -80px; position: absolute; z-index: 101; -moz-border-radius: 10px; -moz-box-shadow: 0 0 10px rgba(0, 0, 0, .4); -webkit-box-shadow: 0 0 10px rgba(0, 0, 0, .4); -box-shadow: 0 0 10px rgba(0, 0, 0, .4); border-radius: 5px; -webkit-border-radius: 5px } .reveal-modal.small { width: 200px; margin-left: -140px } .reveal-modal.medium { width: 400px; margin-left: -240px } .reveal-modal.large { width: 600px; margin-left: -340px } .reveal-modal.xlarge { width: 800px; margin-left: -440px } .reveal-modal .close-reveal-modal { font-size: 22px; line-height: .5; position: absolute; top: -30px; right: -40px; color: #aaa; text-shadow: 0 -1px 1px rbga(0, 0, 0, .6); font-weight: bold; cursor: pointer } @media only screen and (max-width:800px) { .reveal-modal { visibility: hidden; top: 200px; left: 45%; margin-left: -35%; width: 80% } } </style> <title>Introducing the TrueNAS X10</title> <meta content="" name=""description""> <meta content="" name=""keywords""> <meta content=""146039073f72a2:12451c44c346dc"" name=""leadpages-meta-id""> <meta content=""//ixsystems.leadpages.co"" name=""leadpages-url""> <script> (function(a, c, d, b, e, f) { a[d] = b; a[b] || (a[b] = function() { a[b].q = a[b].q || []; a[b].q.push(arguments) }, d = c.createElement(e), d.async = !0, d.src = f, c = c.getElementsByTagName(e)[0], c.parentNode.insertBefore(d, c)) })(window, document, ""LeadPagesCenterObject"", ""center"", ""script"", ""https://js.center.io/center.js""); center('create', 'rMx3rsBoVfadWMfoLN2z5n', 'rMx3rsBoVfadWMfoLN2z5n', { customId: 'lp-5735267667279872' }); </script> <script> center('send', 'view', 'leadpage', 5735267667279872) </script> </head> <body> <header class=""header role-element leadstyle-container"" style=""background-image: url(&quot;//lh3.googleusercontent.com/nb_3u8pM7svZwqnWiF6zjIeHFljlncHDhq5RQwlArNfYZ31h7l4mkPSO2TjZYQZvY4Vm8MbaaRdKfBHIc9FWA2c=s0&quot;); background-size: cover; background-position: center top;""> <img src=""//lh3.googleusercontent.com/nb_3u8pM7svZwqnWiF6zjIeHFljlncHDhq5RQwlArNfYZ31h7l4mkPSO2TjZYQZvY4Vm8MbaaRdKfBHIc9FWA2c=s0"" id=""header-bg-image"" class=""header-bg-img role-element leadstyle-image""> <div class=""header_title""> <h1 class=""role-element leadstyle-text""><span class=""leadstyle-fontsized"" style=""font-size:28px;""><span id=""m_1466959868681406623docs-internal-guid-1fff18b8-053a-8855-d348-258d0028ed51""><span id=""m_1466959868681406623docs-internal-guid-15e508f5-053b-7e30-4487-191db66e2da4""><span id=""m_1466959868681406623docs-internal-guid-15e508f5-053c-749d-0558-76544dd004e0""><span style=""font-family: Roboto; font-weight: 700; font-variant-ligatures: normal; font-variant-numeric: normal; font-variant-alternates: normal; font-variant-east-asian: normal; vertical-align: baseline; white-space: pre-wrap;"">Introducing the TrueNAS X10</span></span></span></span></span></h1> <h2 class=""role-element leadstyle-text""><span style=""font-family:open sans;""><span class=""leadstyle-fontsized"" style=""font-size:26px;"">DURING THIS FREE WEBINAR YOU WILL LEARN:</span><br><span class=""leadstyle-fontsized"" style=""font-size:20px;"">&#8226;</span></span><span class=""leadstyle-fontsized"" style=""font-size:20px;""> What is the M&amp;E industry?</span><br><span style=""font-family:open sans;""><span class=""leadstyle-fontsized"" style=""font-size:20px;"">&#8226; </span></span><span class=""leadstyle-fontsized"" style=""font-size:20px;"">How TrueNAS benefits the M&amp;E customer</span><br><span style=""font-family:open sans;""><span class=""leadstyle-fontsized"" style=""font-size:20px;"">&#8226; </span></span><span class=""leadstyle-fontsized"" style=""font-size:20px;"">Common M&amp;E operations</span><br><span style=""font-family:open sans;""><span class=""leadstyle-fontsized"" style=""font-size:20px;"">&#8226; </span></span><span class=""leadstyle-fontsized"" style=""font-size:20px;"">Storage issues encountered during M&amp;E operations</span><br><span style=""font-family:open sans;""><span class=""leadstyle-fontsized"" style=""font-size:20px;"">&#8226; </span></span><span class=""leadstyle-fontsized"" style=""font-size:20px;"">How TrueNAS resolves these issues </span></h2> </div> </header> <div class=""main role-element leadstyle-container""> <div class=""main_left role-element leadstyle-container""> <div class=""media""> <img src=""//lh3.googleusercontent.com/PmXCCYDakVLqrLUEEpeQkY9boPvCAiEBYjVkHgXhQa4TOYQhL3oimNgX5ixI1VYF8Nv1oT6aseawRU32Y2PYrA=s0"" class=""media__img floatL role-element leadstyle-image"" style=""max-width: 176px;""> <div class=""media__body role-element leadstyle-container""> <h3 class=""role-element leadstyle-text"">Co-Hosted by TIM NAGLE</h3> <p class=""main_left-title role-element leadstyle-text""><strong>With Brad Meyer</strong></p> <p class=""role-element leadstyle-text""><span id=""m_1466959868681406623docs-internal-guid-1fff18b8-053a-8855-d348-258d0028ed51""><span style=""font-size:18.666666666666664px;font-family:Roboto;font-variant-ligatures:normal;font-variant-numeric:normal;font-variant-alternates:normal;font-variant-east-asian:normal;vertical-align:baseline;white-space:pre-wrap""><span id=""m_1466959868681406623docs-internal-guid-1fff18b8-053a-ee32-74a9-3267b8dd3670""><span id=""m_1466959868681406623docs-internal-guid-15e508f5-053d-1f60-4350-6c91e6fb98d8""><span style=""font-size:16px;font-variant-ligatures:normal;font-variant-numeric:normal;font-variant-alternates:normal;font-variant-east-asian:normal;vertical-align:baseline"">Tim Nagle is the founder of Creative Integrations, a full-service M&amp;E organization that specializes in providing post-production, recording, animation, and broadcast facilities to hundreds of clients worldwide. Brad Meyer is the lead technical marketing engineer for TrueNAS at iXsystems.</span></span> </span> </span> </span> <span id=""m_1466959868681406623docs-internal-guid-1fff18b8-053a-8855-d348-258d0028ed51""><span style=""font-size:18.666666666666664px;font-family:Roboto;font-variant-ligatures:normal;font-variant-numeric:normal;font-variant-alternates:normal;font-variant-east-asian:normal;vertical-align:baseline;white-space:pre-wrap""><span id=""m_1466959868681406623docs-internal-guid-1fff18b8-053a-ee32-74a9-3267b8dd3670""><span id=""m_1466959868681406623docs-internal-guid-15e508f5-053d-1f60-4350-6c91e6fb98d8""><img class=""ajT"" src=""https://ssl.gstatic.com/ui/v1/icons/mail/images/cleardot.gif""></span></span> </span> </span> </p> </div> </div> </div> <div class=""main_right border-left role-element leadstyle-container""> <h3 class=""role-element leadstyle-text"">Register free now!</h3> <p class=""main_right-title role-element leadstyle-text"">It&#8217;s happening this [[WEEKDAY+next0]] ([[MMMM+next0]] [[DO+next0]]) at...</p> <div class=""main_right-calendar role-element leadstyle-container""> <p class=""month role-element leadstyle-text"">[[WEEKDAY+next0]]</p> <p class=""day role-element leadstyle-text"">[[DD+next0]]</p> </div> <div class=""main_right-dates""> <ul class=""main_right-list role-element leadstyle-text""> <li>[[time1+next0]] Pacific</li> <li>[[time1+next0+1HOUR]] Mountain</li> <li>[[time1+next0+2HOUR]] Central</li> <li>[[time1+next0+3HOUR]] Eastern</li> </ul> </div> </div> </div> <div class=""section01""> <div class=""container role-element leadstyle-container""> <div class=""countdown-wrap role-element leadstyle-container""> <h3 class=""count-headline role-element leadstyle-text"">THIS WEBINAR WILL START IN</h3> <ul class=""countdown role-element leadstyle-countdown"" data-timestamp=""[[timestamp+next0]]000""> <li> <div class=""flap""> <span id=""days"" class=""days"">0</span> </div> <p class=""timeRefDays role-element leadstyle-text"">DAYS</p> </li> <li> <div class=""flap""> <span id=""hours"" class=""hours"">0</span> </div> <p class=""timeRefHours role-element leadstyle-text"">HOURS</p> </li> <li> <div class=""flap""> <span id=""minutes"" class=""minutes"">0</span> </div> <p class=""timeRefMinutes role-element leadstyle-text"">MINUTES</p> </li> <li> <div class=""flap""> <span id=""seconds"" class=""seconds"">0</span> </div> <p class=""timeRefSeconds role-element leadstyle-text"">SECONDS</p> </li> </ul> </div> <a href=""#"" data-reveal-id=""myModal"" class=""btn cta01 role-element leadstyle-link"">YES! Sign ME UP &#187;</a> </div> </div> <div class=""section03""> </div> <footer class=""footer""> <p class=""footer_legal role-element leadstyle-text""><a target=""_blank"" href=""https://www.ixsystems.com/privacy-policy/"">Privacy Policy</a></p> </footer> <link rel=""stylesheet"" type=""text/css"" href=""http://www.omncdn.com/thankyou/downloads/form.css"" /> <div id=""myModal"" class=""popup-container reveal-modal""> <script type=""text/javascript"" src=""http://www.omncdn.com/thankyou/CustomPage/Geoff/mobile.js""></script> <div id=""leadpages-form-wrapper""> <form action=""http://www.onlinemeetingnow.com/seminar/?id=[[id]]"" method=""POST"" class=""form-horizontal no-image"" id=""leadpages-form"" style=""background-color: rgb(255, 255, 255); border-style: solid; border-width: 1pt; border-color: rgb(255, 255, 255)"" accept-charset=""utf-8""> <a class=""close-reveal-modal""> <img src=""//lh4.ggpht.com/eTzgQFXzaxNZzAsEGJyKl1WLVocESwwJFPPpfaoi3osmL1VKiZLMsq8jMnvIVhcHrnZYr4sJSK7CYhbOp5ce3Q=s0""> </a> <div id=""leadpages-form-header""> <img id=""leadpages-form-header-image"" src=""https://ixsystems.leadpages.co/static/lp1481749521/img/leadbox_status_bar_gray3.gif"" /> <div id=""leadpages-form-header-text"" style=""font-family: Helvetica,Arial,sans-serif; font-size: 10pt; letter-spacing: 0em; display: block""> Almost there! Please answer a few quick questions to save your spot. </div> </div> <div class=""leadbox-content-wrapper""> <div id=""leadpages-form-title"" style=""font-family: &#34;Open Sans&#34;,Helvetica,Arial,sans-serif; font-size: 18pt; letter-spacing: 0em; display: block""> <div style=""text-align: center""> <strong>Enter your email address and click the button below to save your seat.</strong> </div> </div> <div id=""leadpages-fieldset-wrapper""> <fieldset id=""leadpages-fieldset""> <input name=""inf_form_xid"" type=""hidden"" value=""4c75d0385a3b52fa2ef843bee2d7206d"" /> <input name=""inf_form_name"" type=""hidden"" value=""Registrants"" /> <input name=""infusionsoft_version"" type=""hidden"" value=""1.60.0.55"" /> <p style=""text-align:center;font-family:'Open Sans',Helvetica,Arial,sans-serif;font-weight:normal;font-size:13px;""> <input name=""date_option"" type=""radio"" value=""option1|[[timestamp+next0]]"" checked>&#160;[[datetime+next0]] ([[timezone]]) <br> </p> <div class=""control-group"" id=""leadpages-container-inf-field-FirstName""> <div class=""controls""> <input type=""text"" name=""inf_field_FirstName"" value="" id=""inf-field-FirstName"" placeholder=""First Name"" data-source=""leadpages-first_name"" data-role=""first_name"" required=""required"" /> </div> <span class=""error-container"" id=""leadpages-error-inf-field-FirstName""></span> </div> <div class=""control-group"" id=""leadpages-container-inf-field-Email""> <div class=""controls""> <input type=""email"" name=""inf_field_Email"" value="" id=""inf-field-Email"" placeholder=""Email"" data-source=""leadpages-email"" data-role=""email"" required=""required"" /> </div> <span class=""error-container"" id=""leadpages-error-inf-field-Email""></span> </div> <div class=""control-group""> <div class=""controls""> <button id=""leadpages-submit-button"" type=""submit"" style=""font-family: &#34;Open Sans&#34;,Helvetica,Arial,sans-serif; font-size: 14pt; letter-spacing: 0em; background-color: rgb(18, 133, 221); border-style: solid; border-width: 0pt; border-top-width: 0pt; border-right-width: 0pt; border-bottom-width: 0pt; border-left-width: 0pt; border-color: rgb(227, 227, 227); text-shadow: 2px 2px 0px rgb(18, 133, 221)""> <div style=""text-align: center"">Register Now <span class=""raquo"">&#187;</span></div> </button> </div> </div> <div class=""leadpages-spacer"">- -</div> </fieldset> </div> <div id=""leadpages-privacy-policy"" style=""font-family: &#34;Open Sans&#34;,Helvetica,Arial,sans-serif; font-size: 10pt; letter-spacing: ""> <div style=""text-align: center""> <i class=""icon-lock""></i> We hate SPAM and promise to keep your email address safe. </div> </div> </div> <div class=""leadpages-spacer"">- -</div> <input name=""inf_custom_SSWebinarDateTimeText"" type=""hidden"" value=""[[datetime]] ([[timezone]])"" /> <input name=""inf_custom_SSWebinarTitle"" type=""hidden"" value=""[[title]]"" /> <input name=""inf_custom_SSWebinarUrl"" type=""hidden"" value=""[[id]]"" /> </form> </div> <script type=""text/javascript"" src=""//my.leadpages.net/static/lp786/min/css_browser_selector.js""></script> </div> <script src=""http://omncdn.com/thankyou/html5/forhtml5.js""></script> <script src=""//my.leadpages.net/static/lp1483572580/min/tracking.js""></script> <!-- Snippet used on StealthSeminar.com to integrate their form with our Marketo --> <script src=""//app-sj20.marketo.com/js/forms2/js/forms2.min.js""></script> <form id=""mktoForm_1171"" style=""display:none""></form> <script> var marketyform; MktoForms2.loadForm(""//app-sj20.marketo.com"", ""855-MUM-343"", 1171, function(form) { marketyform = form; marketyform.onSuccess(function() { jQuery(""#leadpages-submit-button"").data(""finish"", ""true"").click(); return false; }); }); jQuery.urlParam = function(name) { var results = new RegExp('[\?&]' + name + '=([^&#]*)').exec(window.location.href); if (results == null) { return null; } else { return results[1] || 0; } } jQuery(document).ready(function() { jQuery(""#leadpages-submit-button"").click(function(e) { if (jQuery(this).data(""finish"") !== ""true"") { e.stopPropagation(); e.preventDefault(); var fn = jQuery(""#inf-field-FirstName"").val(); var em = jQuery(""#inf-field-Email"").val(); var ph = jQuery(""#inf-field-Phone1"").val(); var st = jQuery(""#inf-field-State"").val(); var fik = new Date(jQuery('input[name=date_option]:checked').val().split(""|"")[1] * 1000); try { fik = fik.toISOString(); } catch (err) { fik = ""2001-01-01T00:00:00.000Z""; } marketyform.addHiddenFields({ ""Email"": em, ""FirstName"": fn, ""Phone"": ph, ""State"": st, ""webinarTime"": fik, ""webinarDate"": fik.substring(0, 10), ""SSWebinarID"": jQuery.urlParam(""id"") }); marketyform.submit(); } }); }); </script> <script type=""text/javascript""> (function() { var didInit = false; function initMunchkin() { if (didInit === false) { didInit = true; Munchkin.init('855-MUM-343'); } } var s = document.createElement('script'); s.type = 'text/javascript'; s.async = true; s.src = '//munchkin.marketo.net/munchkin.js'; s.onreadystatechange = function() { if (this.readyState == 'complete' || this.readyState == 'loaded') { initMunchkin(); } }; s.onload = initMunchkin; document.getElementsByTagName('head')[0].appendChild(s); })(); </script> </body> <!-- This beautiful and lightning fast landing page was proudly created with Leadpages ( see: https://www.leadpages.net ) and hosted on the Leadpages lead generation platform. --> </html>"; RegexOptions options = RegexOptions.IgnoreCase; foreach (Match m in Regex.Matches(input, pattern, options)) { Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index); } } }

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