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

@"
"
sgim

Test String

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"^<(?<Direction>(Send|Recv)) TYPE=""(?<Function>.+?)"" UTC=""(?<date>.+?)"" ID=""(?<ID>.+?)""(?:\s*\/>|>(?<Message>.*?)<\/\1>)$"; string input = @"<Recv TYPE=""Select.req"" UTC=""05.11.2024 01:43:35"" ID=""2130706432"" /> <Send TYPE=""Select.req"" UTC=""05.11.2024 01:43:35"" ID=""1152"" /> <Send TYPE=""Select.rsp"" UTC=""05.11.2024 01:43:35"" ID=""2130706432"" /> <Send TYPE=""S1F13W"" UTC=""05.11.2024 01:43:35"" ID=""1153""> <List Items=""2""> <Ascii Size=""17"" ItemName=""MDLN"">SECSService</Ascii> <Ascii Size=""20"" ItemName=""SOFTREV"">1.0</Ascii> </List> </Send> <Recv TYPE=""Select.rsp"" UTC=""05.11.2024 01:43:35"" ID=""1152"" /> <Recv TYPE=""S1F14"" UTC=""05.11.2024 01:43:36"" ID=""1153""> <List Items=""2""> <Binary Size=""4"">0x00</Binary> <List Items=""0"" /> </List> </Recv> <Recv TYPE=""S1F13W"" UTC=""05.11.2024 01:43:36"" ID=""1""> <List Items=""0"" /> </Recv> <Send TYPE=""S2F34"" UTC=""05.11.2024 01:43:38"" ID=""4""> <Binary Size=""4"" ItemName=""DRACK"">0x00</Binary> </Send> <Recv TYPE=""S2F37W"" UTC=""05.11.2024 01:43:39"" ID=""5""> <List Items=""2""> <Boolean Size=""5"">False</Boolean> <List Items=""17""> <UInt32 Size=""1"">1</UInt32> <UInt32 Size=""1"">2</UInt32> <UInt32 Size=""1"">3</UInt32> <UInt32 Size=""1"">5</UInt32> <UInt32 Size=""1"">6</UInt32> <UInt32 Size=""2"">10</UInt32> <UInt32 Size=""2"">11</UInt32> <UInt32 Size=""2"">20</UInt32> <UInt32 Size=""2"">21</UInt32> <UInt32 Size=""2"">22</UInt32> <UInt32 Size=""2"">40</UInt32> <UInt32 Size=""2"">41</UInt32> <UInt32 Size=""2"">42</UInt32> <UInt32 Size=""2"">50</UInt32> <UInt32 Size=""2"">52</UInt32> <UInt32 Size=""2"">70</UInt32> <UInt32 Size=""2"">71</UInt32> </List> </List> </Recv>"; RegexOptions options = RegexOptions.Singleline | RegexOptions.IgnoreCase | RegexOptions.Multiline; 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