thanks for the suggestion

Here is a proposed modification to support UNC Paths.

adding UNC path support is pretty straightforward. The following code will allow support for supplying \server\share paths to this library

Add the following to NativeMethods

internal const string LongPathUNCPrefix = @"\?\UNC\";

Replace the following functions in LongPathCommon.cs

    private static string AddLongPathPrefix(string path) {
       if (path.StartsWith (@"\\")) { // if we have been passed a UNC style path (server) prepend \\?\UNC\ but we need to replace the \\ with a single \
            return NativeMethods.LongPathUNCPrefix + path.Substring(2);
        }
        else //assume a standard path (ie C:\windows) and prepend \\?\ to it
        {
            return NativeMethods.LongPathPrefix + path;
        }
    }

    internal static string RemoveLongPathPrefix(string normalizedPath) {

        if (normalizedPath.StartsWith(NativeMethods.LongPathUNCPrefix)) // if we have been supplied a path with the \\?\UNC\ prefix
        {
            return @"\\" + normalizedPath.Substring(NativeMethods.LongPathUNCPrefix.Length);
        }
        else if (normalizedPath.StartsWith(NativeMethods.LongPathPrefix))  // if we have been supplied with the \\?\ prefix
        {
            return  normalizedPath.Substring(NativeMethods.LongPathPrefix.Length);
        }

        return normalizedPath;

    }