title: Regex to match all occurences of pound(#) within two pipe (|) symbols
body: <p>The problem description is;</p>
  <pre><code>Target String:
  ##|#|###|##|#|#|||##|##
  12345678901234567890123
  
  RegEx: \|\*+\|
  
  Matches:
  |#| - 123
  |##| - 9012
  |#| - 456
  |##| - 8901
  
  But **not**
  |###| - 56789
  |#| - 234
  </code></pre>
  <p>Help is appreciated. I am using .NET.
  <strong>regex101 link:</strong> <a href="https://regex101.com/r/W4jHjv/1" rel="nofollow noreferrer">https://regex101.com/r/W4jHjv/1</a></p>