c# - 带有键名的json字典

Question

我有一本字典Dictionary<int, string>整数和字符串，其中整数是 ID，字符串是用户名，当我将其转换为 JSON 时使用 Json.NET我得到如下内容:

{"3":"jack","2":"john"}

我是这样转换的:

Dictionary<int, string> dictFriends = new Dictionary<int, string>();

foreach (var id in resultList)
{
    var user = db.Users.Find(id);
    string friend = user.Username;

    dictFriends.Add(id, friend);
}

string json = JsonConvert.SerializeObject(dictFriends);

但我希望得到这样的东西:

[
{ "id": "3", "user": "jack"},
{ "id": "2", "user": "john"},
]

这可能吗？

Answer 1

据我所知，您必须将字典转换为 JSON.NET 会识别为 IEnumerable 的内容:

// YOUR DICTIONARY
var dictFriends = new Dictionary<int, string>() {
    {1,"Jack"},
    {2,"John"},
    {3,"Jeff"}
};

// TRANSFORM INTO IENUMERABLE
var transformed = from key in dictFriends.Keys
                  select new { id = key, user = dictFriends[key] };

// SERIALIZE
var json = JsonConvert.SerializeObject(transformed);

输出:

[
{"id":1, "user":"Jack"},
{"id":2, "user":"John"},
{"id":3, "user":"Jeff"}
]