Sorting

This is our Dictionary:

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

Sorting by Keys

We need to get the Keys into an array:

var sortedStoreByKey = store
    .Keys
    .ToArray();

Once we have the keys in an array, we can sort them:

Array.Sort(sortedStoreByKey);

Then, we display the store dictionary based on this array:

foreach (var key in sortedStoreByKey)
{
    Console.WriteLine($"{key}: {store[key]}");
}

var sortedStoreByValue = store
    .OrderBy(item => item.Value)
    .Select(item => item.Key);

Then, we can display based on the Keys again:

foreach (var key in sortedStoreByValue)
{
    Console.WriteLine($"{key}: {store[key]}");
}