asp.net - JSON:序列化从 IEnumerable 派生的类型

Question

JavaScriptSerializer 将从 IEnumerable 派生的类型序列化为 JavaScript 数组。它对数组和列表很方便，但在某些情况下，我需要序列化派生类型中声明的属性(例如 IGrouping 中的键)。这里有一些示例代码:

var items = new[] { "aaabbb", "abcd", "bdsasd", "bsdqw" };
IGrouping<char, string> data = items.GroupBy(i => i[0]).First();
var serializer = new JavaScriptSerializer();
var serialized = serializer.Serialize(data);
// serialized == "[\"aaabbb\",\"abcd\"]"
// doesn't contain definition for IGrouping.Key property

这个问题有什么简单的解决方案吗？

Answer 1

你可以试试这个:

var items = new[] { "aaabbb", "abcd", "bdsasd", "bsdqw" };
var data = (from x in items
            group x by x[0] into g
            select new
            {
                Key = g.Key,
                Value = g
            }).First();
var serializer = new JavaScriptSerializer();
var serialized = serializer.Serialize(data);

或者，如果您更喜欢:

var items = new[] { "aaabbb", "abcd", "bdsasd", "bsdqw" };
var data = items.GroupBy(i => i[0])
    .Select(x => new { Key = x.Key, Value = x })
    .First();
var serializer = new JavaScriptSerializer();
var serialized = serializer.Serialize(data);

在这两种情况下，结果都是:

{"Key":"a","Value":["aaabbb","abcd"]}