Methods

var store = new Dictionary<string, double>
{
    ["peach"] = 15,
    ["grape"] = 23,
    ["lemon"] = 8,
    ["coconut"] = 10
};

Methods

If we try to add a key which already exists, the ArgumentException is thrown.

Add

try
{
    store.Add("peach", 21);
}
catch (ArgumentException)
{

}

var key = "peach";

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

store.Remove("coconut");

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

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