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  1. using System;
  2. using System.Text.RegularExpressions;
  3.  
  4. class Demo {
  5.     public static void Main()
  6.     {
  7.         string delimiter = "||";
  8.         string keyValues = "CustomerId=1||OrderId=12||UserId=a1dcd568-f129-419b-b51e-be2dbb67de0f";
  9.         string pattern = @"(?<=^|" + Regex.Escape(delimiter) + @")\w+(?==)";
  10.         foreach (var key in Regex.Matches(keyValues, pattern))
  11.             Console.WriteLine(key);
  12.     }
  13. }
Success #stdin #stdout 0.06s 34080KB
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stdin
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Standard input is empty
stdout
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CustomerId
OrderId
UserId
https://ideone.com/Brappw
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
public

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