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
Processing...

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"(?:\'\,\[\]\)\d{0,10}\ then\ begin\s?)^(.*?)\bend;"; string input = @"e R$ '+FormatFloat('#,##0.00', valorPercentual ) else FieldByName('InstrucoesMultaVencimento').Value := ''; end; if oCDS_CONVENIOBANCARIOCOBREBEMPROP.Locate('CBC_NOMEPROPRIEDADE','InstrucoesDiasProtesto',[]) then begin AlteraDescricaoInstrucao := oCDS_CONVENIOBANCARIOCOBREBEMPROP.FieldByName('CBC_VALORPROPRIEDADE').AsString; AlteraDescricaoInstrucao := StringReplace( AlteraDescricaoInstrucao,'#DIA#', FloatToStr(oCds_ConvenioBanco.FieldByName('CBP_PROTESTODIAS').AsFloat),[rfReplaceAll, rfIgnoreCase]); FieldByName('InstrucoesDiasProtesto').Value := AlteraDescricaoInstrucao; end else begin if ( oCds_ConvenioBanco.FieldByName('CBP_PROTESTODIAS').AsFloat > 0 ) then FieldByName('InstrucoesDiasProtesto').Value := 'Após '+IntToStr(oCds_ConvenioBanco.FieldByName('CBP_PROTESTODIAS').AsInteger)+' dias do vencimento protestar' else FieldByName('InstrucoesDiasProtesto').Value := ''; end; if ( oCds_ConvenioBanco.FieldByName('CBP_CALCULAVALORJURO').AsString = 'P' ) then valorJuroDiario := ( ( BoletoBancario.ConvenioBancario.ValorDocumento * oCds_ConvenioBanco.FieldByName('CBP_PERCENTUALJUROSDIARIO').AsFloat) / 100) else valorJuroDiario := oCds_ConvenioBanco.FieldByName('CBP_PERCENTUALJUROSDIARIO').AsFloat; if oCDS_CONVENIOBANCARIOCOBREBEMPROP.Locate('CBC_NOMEPROPRIEDADE','InstrucoesJurosDiario',[]) then FieldByName('InstrucoesJurosDiario').Value := oCDS_CONVENIOBANCARIOCOBREBEMPROP.FieldByName('CBC_VALORPROPRIEDADE').AsString else begin if ( oCds_ConvenioBanco.FieldByName('CBP_PERCENTUALJUROSDIARIO').AsFloat > 0 ) then FieldByName('InstrucoesJurosDiario').Value := 'Após vencimento cobrar juros de R$ '+FormatFloat('#,##0.00', valorJuroDiario)+' por dia de atraso.' else FieldByName('InstrucoesJurosDiario').Value := '' end; if ( BoletoBancario.ConvenioBancario.OutrasInstrucoes <> '' ) then OutrasIntrucoes := oCds_ConvenioBanco.FieldByName('CBB_OUTRASINSTRUCOES').AsString else OutrasIntrucoes := ''; if ( NumeroNFSe <> 'SemNumero' ) then{#T31720} OutrasIntrucoes := OutrasIntrucoes + 'Boleto ref. a Notas: ' + NumeroNFSe; // NumeroNF; {#T31549} if ( NumeroNF <> 'SemNumero' ) then begin{#T31720} if ( OutrasIntrucoes <> '') then begin OutrasIntrucoes := OutrasIntrucoes+#13#10+ 'RPS: ' + NumeroNF; // NumeroNFSe; {#T31549} end else OutrasIntrucoes := 'Boleto ref. a RPS: ' + NumeroNF; // NumeroNFSe; {#T31549} end;varToStr( copy( BoletoBancario.ConvenioBancario.NumeroContaCorrente, Length(BoletoBancario.ConvenioBancario.NumeroContaCorrente), 1)); FieldByName('NomeSacado').Value := IntToStr(BoletoBancario.CodigoCliente)+' - '+BoletoBancario.NomeCliente; FieldByName('RuaSacado').Value := oCds_TitulosSelecionados.FieldByName('CLN_ENDERECO').AsString+', Nº '+ oCds_TitulosSelecionados.FieldByName('CLN_NUMERO').AsString; cepCliente := FormatMaskText('99999-999;0;', oCds_TitulosSelecionados.FieldByName('CEP_CEP').AsString); FieldByName('CidadeEstadoCep').Value := cepCliente+' '+ BoletoBancario.CidadeCliente+'-'+ BoletoBancario.EstadoCliente; Carteira := Codig"; 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