Multiple file-extensions searchPattern for System.IO.Directory.GetFiles

What is the syntax for setting multiple file-extensions as searchPattern on Directory.GetFiles()? For example filtering out files with .aspx and .ascx extensions. // TODO: Set the string 'searchPattern' to only get files with // the extension '.aspx' and '.ascx'. var filteredFiles = Directory.GetFiles(path, searchPattern); Update: LINQ is not an option, it has to be a searchPattern passed into Get