Question

I’m working in xmldataprovider and we have configuration value “source” this value may be local file or url
like

c:\data\test.xml –absolute
data\test.xml –relative

or url http:\mysite\test.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);
}