title: Convert "1.5TB", "500MB" into a single unit of file size
body: <p>I want to allow a user to enter a file size, using any of the standard suffixes (such as TB, MB, GB)</p>
  
  <p>I'd like to get the value in a way that i can compare them to a folder size.</p>
  
  <p>The idea is to have a program that'll warn if a folder gets above a certain size, with the size dictated by a user-inputted string.</p>
  
  <p>Is there anything built into the .net framework that allows me to parse strings such as <code>1.5TB</code>, <code>400GB</code>, <code>1.9GB</code> and <code>0.5KB</code> ?</p>