public void SaveStoredData(string contact_name, string address)
 {
     using (AddrbookDbContext ctx = new AddrbookDbContext(DbPath))
     {
         SaveStoredData(ctx, contact_name, address);
         try
         {
             ctx.SaveChanges();
         }
         catch (Exception ex)
         {
             string str = ex.Message;
         }
     }
 }
 public bool DeleteAddress(string address)
 {
     using (AddrbookDbContext ctx = new AddrbookDbContext(DbPath))
     {
         Addrbook addrbook = ctx.Addrbooks.FirstOrDefault(p => p.Address.SequenceEqual(address));
         if (address != null)
         {
             ctx.Addrbooks.Remove(addrbook);
             try
             {
                 ctx.SaveChanges();
             }
             catch (Exception ex)
             {
                 string str = ex.Message;
             }
         }
     }
     return(true);
 }