C# Dictionary Methods

DictionaryMethods.Program.cs

using System;
using System.Collections.Generic;

namespace DictionaryMethods
{
    class Program
    {
        static void Main(string[] args)
        {
            var store = new Dictionary<string, double>
            {
                ["peach"] = 15,
                ["grape"] = 23,
                ["lemon"] = 8,
                ["coconut"] = 10
            };

            var peachType = "peach";

            try
            {
                store.Add(peachType, 21);
            }
            catch (ArgumentException ex)
            {
                Console.WriteLine(ex.Message);
            }

            store.TryAdd(peachType, 21);

            store.Remove("coconut");

            foreach (var item in store)
            {
                Console.WriteLine(item.Key + " " + item.Value);
            }

            var key = "cherry";
            var foundValueByKey = store.ContainsKey(key)
                ? store[key].ToString()
                : $@"Key ""{key}"" doesn't exist";

            Console.WriteLine(foundValueByKey);

            var keyExists = store.ContainsKey(key);
            if (keyExists)
            {
                Console.WriteLine(store[key]);
            }
            else
            {
                Console.WriteLine($"Key {key} doesn't exist");
            }

            var totalFruitTypes = store.Count;
            Console.WriteLine(totalFruitTypes);


            store.TryGetValue("lemon", out double quantity);
            Console.WriteLine(quantity);

            Console.ReadKey();
        }
    }
}