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  1. using System;
  2. using System.Text.RegularExpressions;
  3.  
  4. public class Test
  5. {
  6. 	public static void Main()
  7. 	{
  8.  
  9.  
  10. String s = @"abcde   my first line
  11. fghij   my second line
  12. klmno   my third line";
  13.  
  14. String mySubstring = "fghij";
  15.  
  16. Match m = Regex.Match(s, "^" + mySubstring + ".*", RegexOptions.Multiline);
  17.  
  18. if (m.Success) {
  19.    Console.WriteLine(m.Value);
  20. } 
  21.  
  22.  
  23.     }
  24. }
Success #stdin #stdout 0.11s 24560KB
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stdin
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Standard input is empty
stdout
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fghij   my second line
https://ideone.com/U7xdmS
language:
C# (gmcs 5.20.1)
created:
10 years ago
visibility:
secret

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