Matching file names from an array with directory file names

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication2
{
   class Program
   {
      static void Main(string[] args)
      {
         List<string> filenamesFromDatabase = new List<string>();
         List<string> filenamesFromDirectory = new List<string>();

         filenamesFromDatabase.Add("firstfile.txt");

         filenamesFromDirectory.Add("firstfile.txt");
         filenamesFromDirectory.Add("anotherfile.txt");

         foreach (string filename in filenamesFromDirectory)
         {
            if (filenamesFromDatabase.Any(s => filename.Contains(s)))
            {
               //Display the file to the user for downloading here
               Console.WriteLine(filename);
            }
         }

         Console.ReadLine();
      }
   }
}