title: How to determine if a path is fully qualified?
body: <p>Given a path, I need to know if it is a fully qualified path (absolute path).</p>
  
  <p>I know there is a method called <code>System.IO.Path.IsPathRooted</code> but this returns true for paths like:</p>
  
  <ul>
  <li>C:Documents </li>
  <li>/Documents</li>
  </ul>
  
  <p>I have seen a method called <code>IsPathFullyQualified</code> which I am interested in, see <a href="https://docs.microsoft.com/en-us/dotnet/api/system.io.path.ispathfullyqualified?view=netcore-3.1" rel="nofollow noreferrer">here</a>, but unfortunately, it seems it is not recognized under .NET Framework 4.5. So Is there any equivalent method for .NET 4.5?</p>