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

/
/
gms

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"<!--a5-->.*<!--5-->"; string input = @"<!doctype html> <html> <head> <meta charset=""utf-8""> <title>Sistema H |Produto, Odin</title> <link rel=""stylesheet"" type=""text/css"" href=""tema.d/oficial.d/css/page.css""> <link rel=""stylesheet"" type=""text/css"" href=""tema.d/oficial.d/css/menu.css""> <script type=""text/javascript""> server = ""http://localhost/g2%20soft/ecomerce/""; </script> <script src=""tema.d/oficial.d/js/wrequest.js""></script> </head> <body lang=""pt-br""> <nav id=""menunav""> <header> <img src=""tema.d/oficial.d/img/logo com fundo transparente.png"" alt=""> </header> <ul class=""menu""> <li class=""menufechado"" link=""perfil"" submenu=""true"" > <span onclick=""menuOpen(this)"">+ FabricaA[Fabrica]</span> <ul class=""submenu""> <li class=""menufechado"" link=""edit_perfil"" submenu=""false"" > <span onclick=""menuOpen(this)"">Perfil</span> </li> <li class=""menufechado"" link=""edit_perfil?a=sair"" submenu=""false"" > <span onclick=""menuOpen(this)"">Sair</span> </li> </ul> </li> <li class=""menufechado"" link=""list_meusprodutos"" submenu=""true"" > <span onclick=""menuOpen(this)"">+ Produtos</span> <ul class=""submenu""> <li class=""menufechado"" link=""list_meusprodutos"" submenu=""false"" > <span onclick=""menuOpen(this)"">Meus Produtos</span> </li> <li class=""menufechado"" link=""add_produto"" submenu=""false"" > <span onclick=""menuOpen(this)"">Cadastrar Produto</span> </li> <li class=""menufechado"" link=""list_valortipo"" submenu=""false"" > <span onclick=""menuOpen(this)"">Tabelas de Preço</span> </li> </ul> </li> <li class=""menufechado"" link=""list_meusclientes"" submenu=""true"" > <span onclick=""menuOpen(this)"">+ Clientes</span> <ul class=""submenu""> <li class=""menufechado"" link=""list_meusclientes"" submenu=""false"" > <span onclick=""menuOpen(this)"">Meus Clientes</span> </li> <li class=""menufechado"" link=""list_naoclientes"" submenu=""false"" > <span onclick=""menuOpen(this)"">Não Clientes</span> </li> </ul> </li> <li class=""menufechado"" link=""#"" submenu=""true"" > <span onclick=""menuOpen(this)"">+ Cadastro</span> <ul class=""submenu""> <li class=""menufechado"" link=""add_produto"" submenu=""false"" > <span onclick=""menuOpen(this)"">Produto</span> </li> <li class=""menufechado"" link=""add_formadepagamento"" submenu=""false"" > <span onclick=""menuOpen(this)"">Forma de pagamento</span> </li> <li class=""menufechado"" link=""add_prasodeentrega"" submenu=""false"" > <span onclick=""menuOpen(this)"">Praso de pagamento</span> </li> </ul> </li> <li class=""menufechado"" link=""list_pedidosfabrica"" submenu=""false"" > <span onclick=""menuOpen(this)"">Pedidos</span> </li> <li class=""menufechado"" link=""mensagens"" submenu=""false"" > <span onclick=""menuOpen(this)"">Mensagens</span> </li> <li class=""menufechado"" link="" submenu=""true"" > <span onclick=""menuOpen(this)"">+ Relatorios</span> <ul class=""submenu""> <li class=""menufechado"" link=""rela_produtosvendidos"" submenu=""false"" > <span onclick=""menuOpen(this)"">Produtos Vendidos</span> </li> <li class=""menufechado"" link=""rela_produtoscadastrados"" submenu=""false"" > <span onclick=""menuOpen(this)"">Produtos Cadastrados</span> </li> <li class=""menufechado"" link=""rela_clientescadastrados"" submenu=""false"" > <span onclick=""menuOpen(this)"">Clientes Cadastrados</span> </li> </ul> </li> <li class=""menufechado"" link="" submenu=""false"" > <span onclick=""menuOpen(this)"">Lançamentos</span> </li> </ul> </nav> <content> <h1>Produto, Odin</h1> <link rel=""stylesheet"" href=""tema.d/oficial.d/css/view_produto.css""> <div class=""page_listabas""> <!--a5--> <div class=""page_abalabel "" onclick=""link('list_loja')"">Loja</div> <!--5--> <div class=""page_abalabel page_abalabel_opened"">Ver</div> <!--a6--> <div class=""page_abalabel"" onclick=""link('edit_produto?id=52')"">Detalhes</div> <div class=""page_abalabel"" onclick=""link('edit_produtomidia?id=52')"">Midias</div> <!--6--> </div> <div class=""page_aba""> <div id=""referencia"">Odin</div> <div class=""midias""> <div class=""midia_view""> <img src=""anexo\97"" alt=""midia0"" id=""midia_view_img""> </div> <div class=""midias_left""> <span> <img src=""tema.d/oficial.d/img/midiasview_arrow_left.svg"" alt=""> </span> </div> <div class=""midias_right""> <span> <img src=""tema.d/oficial.d/img/midiasview_arrow_right.svg"" alt=""> </span> </div> <div class=""midia_list""><div class=""> <img src=""anexo/97"" alt="" onclick=""setMidia(this)""> </div> <div class=""> <img src=""anexo/98"" alt="" onclick=""setMidia(this)""> </div> </div> </div> <div class=""detalhes""> <p>Odim, tambem conhecido como pai de todos.</p> <p> 2cx por <valor>R$ 0,00</valor> </p> <p>[52]Hidralica Industrial/Eletrica</p> </div> <div class=""formasdepagamento""> <p>Podendo ser pago:</p> {{formas de pagamento}} </div> <div class=""outrosprodutos""> <div class=""produto""> <img src=""anexo/0"" alt=""> </div> {{outrosprodutos}} </div> </div> <script type=""text/javascript"" src=""tema.d/oficial.d/js/view_produto.js""></script> <footer>G2</footer> </content> <div class=""menu-button"" onclick=""menuShow()"">&equiv;</div> <div class=""flutuante"" id=""flutuante"">Loading...</div> <div class=""msgbox_fundo"" id=""msgbox_fundo"" onclick=""MSGbox.close()""> <div class=""msgbox_box""> <span class=""button msgbox_close"" onclick=""MSGbox.close()"">X</span> <div class=""msgbox_conteudo"" id=""msgbox_conteudo""> </div> </div> </div> <script type=""text/javascript"" src=""tema.d/oficial.d/js/page.js""></script> <script type=""text/javascript"" src=""tema.d/oficial.d/js/menu.js""></script> </body> </html>"; RegexOptions options = RegexOptions.Multiline | RegexOptions.Singleline; 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