title: C# Replace URL Regex
body: <p>I am trying to pull a URL out of a string and use it later to create a Hyperlink. I would like to be able to do the following:
  - determine if the input string contains a URL
  - remove the URL from the input string
  - store the extracted URL in a variable for later use</p>
  
  <p>Can anyone help me with this?</p>