iotest.cs

class Program
{
    static void Main(string[] args)
    {
        try
        {
            var di = new DirectoryInfo(Environment.CurrentDirectory);

            Console.WriteLine("Current directory is {0}", di.FullName);

            var files = di.GetFiles();

            Console.WriteLine("There are {0} files in the current directory. They are: ", files.Length);

            foreach (var fi in files)
            {
                Console.WriteLine(fi.FullName);
            }
        }
        catch (Exception ex)
        {
            Console.Write(ex.ToString());
        }

        Console.ReadLine();
    }
}

/*
Produces the following output normally:

Current directory is C:\Users\myuser\Documents\Visual Studio 2015\Projects\unctest\unctest\bin\Debug
There are 6 files in the current directory. They are:
C:\Users\myuser\Documents\Visual Studio 2015\Projects\unctest\unctest\bin\Debug\unctest.exe
C:\Users\myuser\Documents\Visual Studio 2015\Projects\unctest\unctest\bin\Debug\unctest.exe.config
C:\Users\myuser\Documents\Visual Studio 2015\Projects\unctest\unctest\bin\Debug\unctest.pdb
C:\Users\myuser\Documents\Visual Studio 2015\Projects\unctest\unctest\bin\Debug\unctest.vshost.exe
C:\Users\myuser\Documents\Visual Studio 2015\Projects\unctest\unctest\bin\Debug\unctest.vshost.exe.config
C:\Users\myuser\Documents\Visual Studio 2015\Projects\unctest\unctest\bin\Debug\unctest.vshost.exe.manifest

But when run on a network share, on windows 7:

Current directory is \\wab10\Temp\myuser
System.IO.DirectoryNotFoundException: Could not find a part of the path '\\wab10
\Temp\myuser'.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileSystemEnumerableIterator`1.CommonInit()
   at System.IO.FileSystemEnumerableIterator`1..ctor(String path, String origina
lUserPath, String searchPattern, SearchOption searchOption, SearchResultHandler`
1 resultHandler, Boolean checkHost)
   at System.IO.DirectoryInfo.InternalGetFiles(String searchPattern, SearchOptio
n searchOption)
   at System.IO.DirectoryInfo.GetFiles()
   at Program.Main(String[] args)

*/