Deletes this DirectoryInfo if it is empty.
Assembly: mscorlib (in mscorlib.dll)
The directory is not empty.
The directory is the application's current working directory.
There is an open handle on the directory, and the operating system is Windows XP or earlier. This open handle can result from enumerating directories and files.
The caller does not have the required permission.
The directory described by this DirectoryInfo object does not exist or could not be found.