//Delete a single archived data from the database.
 public static void  DeleteData(ArchiveData data)
 {
     using (var database = new ArchiveDataContext())
     {
         database.Archive.Remove(data);
         database.SaveChanges();
     }
 }
 //Add a single archived data.
 public static void AddData(ArchiveData data)
 {
     using (var database = new ArchiveDataContext())
     {
         database.Archive.Add(data);
         database.SaveChanges();
     }
 }