title: Remove single backslashes, convert doubles to single in string
body: <p>How best can I convert instances of double backslashes to a single backslash in a string, but remove any occurrences of single backslash?</p>
  
  <p>So this:</p>
  
  <pre>
  \|Testing|ABC:1234\\1000-1\|
  </pre>
  
  <p>Should convert to this:</p>
  
  <pre>
  |Testing|ABC:1234\1000-1|
  </pre>
  
  <p>Ideally I want to avoid a temporary replace of '\' to another character.  A solution using .NET or Regular Expressions is preferred.</p>