Method Copy

Copies the file src to Directory to under the new file name dest.

If you want to copy the entire source directory to the destination one, you can do so like this:

Directory to; // the directory to copy to
foreach (string file in dir.ListAll()) {
    dir.Copy(to, file, newFile, IOContext.DEFAULT); // newFile can be either file, or a new name
}

NOTE: this method does not check whether dest exist and will overwrite it if it does.