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

Code Generator

Language

Generated Code

using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string pattern = @"\\\""SOC\\\"":([\d\.\,]+),"; string input = @"{ ""val"": ""{\""InverterStatus\"":5,\""InputPower\"":270,\""PV1Voltage\"":362.9,\""PV1InputCurrent\"":0.7,\""PV1InputPower\"":257.9,\""PV2Voltage\"":288.4,\""PV2InputCurrent\"":0,\""PV2InputPower\"":20.9,\""OutputPower\"":496.7,\""GridFrequency\"":49.98,\""L1ThreePhaseGridVoltage\"":241.5,\""L1ThreePhaseGridOutputCurrent\"":2.3,\""L1ThreePhaseGridOutputPower\"":492.9,\""L2ThreePhaseGridVoltage\"":0,\""L2ThreePhaseGridOutputCurrent\"":0,\""L2ThreePhaseGridOutputPower\"":0,\""L3ThreePhaseGridVoltage\"":0,\""L3ThreePhaseGridOutputCurrent\"":0,\""L3ThreePhaseGridOutputPower\"":0,\""TodayGenerateEnergy\"":27.9,\""TotalGenerateEnergy\"":6828.3,\""TWorkTimeTotal\"":5.903158e7,\""PV1EnergyToday\"":12.3,\""PV1EnergyTotal\"":3153.6,\""PV2EnergyToday\"":17.1,\""PV2EnergyTotal\"":3378.2,\""PVEnergyTotal\"":6554.4,\""InverterTemperature\"":36,\""TemperatureInsideIPM\"":33.3,\""BoostTemperature\"":35.9,\""DischargePower\"":0,\""ChargePower\"":0,\""BatteryVoltage\"":53.3,\""SOC\"":100,\""ACPowerToUser\"":0,\""ACPowerToUserTotal\"":0,\""ACPowerToGrid\"":81,\""ACPowerToGridTotal\"":81,\""INVPowerToLocalLoad\"":200,\""INVPowerToLocalLoadTotal\"":200,\""BatteryTemperature\"":26,\""BatteryState\"":5,\""EnergyToUserToday\"":1.2,\""EnergyToUserTotal\"":8244.3,\""EnergyToGridToday\"":0.8,\""EnergyToGridTotal\"":217.9,\""DischargeEnergyToday\"":8.8,\""DischargeEnergyTotal\"":3086.6,\""ChargeEnergyToday\"":10.8,\""ChargeEnergyTotal\"":3092.5,\""LocalLoadEnergyToday\"":27.8,\""LocalLoadEnergyTotal\"":14574.9,\""ACChargeEnergyToday\"":0.4,\""ACChargeEnergyTotal\"":840.4,\""Mac\"":\""48:55:19:68:30:C9\"",\""Cnt\"":100808}"", ""ack"": true, ""ts"": 1719331820944, ""q"": 0, ""from"": ""system.adapter.mqtt.0"", ""user"": ""system.user.admin"", ""lc"": 1719331820944, ""_id"": ""mqtt.0.SPH4600"", ""common"": { ""name"": ""SPH4600"", ""write"": true, ""read"": true, ""role"": ""variable"", ""desc"": ""mqtt server variable"", ""type"": ""string"" }, ""native"": { ""topic"": ""SPH4600"" }, ""type"": ""state"", ""acl"": { ""object"": 1636, ""state"": 1636, ""owner"": ""system.user.dressman79"", ""ownerGroup"": ""system.group.user"" } }"; RegexOptions options = 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