I want to load a list with a list of file names in a folder that have not already been selected:

private void _LoadFileList(List<string> CurrentFiles)
{
    string RootLocation = Properties.Settings.Default["RootFolder"].ToString();
    string[] FileNames = Directory.GetFiles(RootLocation);



}

The list CurrentFiles has the list of files already selected. I would like to now use Linq to query the FileNames array to pull those file names not in the CurrentFiles list.

I'm not sure how to code the Linq query and could use some help.