c# - Check if the path input is URL or Local File

Question

I'm working in xmldataprovider and we have configuration value "source" this value may be local file or url like

c:dataest.xml --absolute dataest.xml --relative

or url http:mysiteest.xml

how I can determine all this cases in code I'm working c#

Answer 1

private static bool IsLocalPath(string p)
{
  return new Uri(p).IsFile;
}

...or, if you want to include support for certain invalid URIs...

private static bool IsLocalPath(string p)
{
  if (p.StartsWith("http:"))
  {
    return false;
  }

  return new Uri(p).IsFile;
}

Example Usage

static void Main(string[] args)
{
  CheckIfIsLocalPath("C:\foo.txt");
  CheckIfIsLocalPath("C:");
  CheckIfIsLocalPath("http://www.txt.com");
}

private static void CheckIfIsLocalPath(string p)
{
  var result = IsLocalPath(p); ;

  Console.WriteLine("{0}  {1}  {2}", result, p, new Uri(p).AbsolutePath);
}