title: Check if the path input is URL or Local File
body: <p>I'm working in xmldataprovider and we have configuration value "source" this value may be local file or url 
  like </p>
  
  <blockquote>
    <p>c:\data\test.xml --absolute
    data\test.xml  --relative</p>
    
    <p>or url http:\mysite\test.xml</p>
  </blockquote>
  
  <p>how I can determine all this cases in code
  I'm working c# </p>