C# I/O library that supports long paths (to solve PathTooLongException)

Question

My open source software synchronizes a remote folder to the local desktop. The remote folder can be on Alfresco, where path length has no limit (/root/very/very/very/long/name.txt).

When developing the application I used System.IO.File.OpenWrite and System.IO.Stream.Write, but it appears that they don't support paths over a few hundred characters, so users report errors like PathTooLongException when working with long paths.

UNC paths must absolutely be avoided, because they lead to incompatibility with some applications.

What library/code should be used in this case?

It must be open source C#.

Answer 1

AlphaFS lets you use very long paths (using the "\?\" style) and mimics the System.IO namespace.

You will probably be able to use this library just as if you were using System.IO. For example, AlphaFS.Win32.Filesystem.File.Copy() instead System.IO.File.Copy().

(source)