C#反转词典中的项目

var dictionary = new Dictionary<string, string>
{
    { "apple", "fruit" },
    { "carrot", "vegetable" }
};

var reversedDictionary = dictionary.ToDictionary(kvp => kvp.Value, kvp => kvp.Key);

var dictionary = new Dictionary<string, string>
{
    { "apple", "fruit" },
    { "carrot", "vegetable" }
};

var reversedDictionary = dictionary.Select(kvp => new { Key = kvp.Value, Value = kvp.Key })
                                  .ToDictionary(kvp => kvp.Key, kvp => kvp.Value);

var dictionary = new Dictionary<string, string>
{
    { "apple", "fruit" },
    { "carrot", "vegetable" }
};

var reversedDictionary = new Dictionary<string, string>();

foreach (var kvp in dictionary)
{
    reversedDictionary.Add(kvp.Value, kvp.Key);
}