DirectoryInfoCopyTo Method (String, CopyOptions)
Option NoBuffering is recommended for very large file transfers.
Use this method to allow or prevent overwriting of an existing directory.
Whenever possible, avoid using short file names (such as XXXXXX~1.XXX) with this method.
If two directories have equivalent short file names then this method may fail and raise an exception and/or result in undesirable behavior.
Returns a new directory, or an overwrite of an existing directory if copyOptions is not FailIfExists.