C#, .Net Framework: Google Search: find file extension with regex in c# - The Diigo Meta page

• 30 Mar 06
  

  yc c

  article google regex search tips

  • A simple regex that could be used in C# to find file extensions is:
    
    .+\.([^.]+)$
    
    This will find an extension that is at the end of the string. To find an extension anywhere in a string you can use:
    
    .+\.([^.]+)\s
    
    A regex to find a three letter extension at the end of a line:
    
    .+\.([^.]{3})$
    
    To find a three letter extension anywhere in a string you can use:
    
    .+\.([^.]{3})\s

Page Comments

• 
  yc c on 2006-03-30
  A simple regex that could be used in C# to find file extensions is:
  
  .+\.([^.]+)$
  
  This will find an extension that is at the end of the string. To find an extension anywhere in a string you can use:
  
  .+\.([^.]+)\s
  
  A regex to find a three letter extension at the end of a line:
  
  .+\.([^.]{3})$
  
  To find a three letter extension anywhere in a string you can use:
  
  .+\.([^.]{3})\s

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