private Dictionary <int, int> GetTablesInDictionary()
        {
            var proxy      = new RestaurantServiceClient();
            var call       = proxy.GetAllTablesByRestaurantAsync(Convert.ToInt32(HiddenResId.Content.ToString()));
            var tables     = call.Result.ToList();
            var dictionary = new Dictionary <int, int>();

            foreach (var table in tables)
            {
                if (dictionary.ContainsKey(table.NoSeats))
                {
                    dictionary[table.NoSeats]++;
                }
                else
                {
                    dictionary.Add(table.NoSeats, 1);
                }
            }

            return(dictionary);
        }