Converting a URI path to a relative file system path in .NET

Question

How do I convert an absolute or relative URI path (e.g. /foo/bar.txt) to a (segmentwise) corresponding relative file system path (e.g. foo\bar.txt) in .NET?

My program is not an ASP.NET application.

Answer 1

Have you already tried Server.MapPath?
or Uri.LocalPath property? Something like following :

string uriString = "file://server/filename.ext"; // Lesson learnt - always check for a valid URI if(Uri.IsWellFormedUriString(uriString)) {     Uri uri = new Uri(uriString);     Console.WriteLine(uri.LocalPath); } 

Answer 2

I figured out this way to produce a full absolute file system path from a relative or absolute URI and a base path.

With:

Uri basePathUri = new Uri(@"C:\abc\"); 

From a relative URI:

string filePath = new Uri(basePathUri, relativeUri).AbsolutePath; 

From an absolute URI:

// baseUri is a URI used to derive a relative URI Uri relativeUri = baseUri.MakeRelativeUri(absoluteUri); string filePath = new Uri(basePathUri, relativeUri).AbsolutePath;