与ASP.NET MVC/.NET类似的函数

您可以使用匿名类型:

public ActionResult SomeActionThatReturnsJson()
{
    var someObjectThatContainsManyProperties = GetObjectFromSomeWhere();
    return Json(new {
        Name = someObjectThatContainsManyProperties.Name,
        Phone = someObjectThatContainsManyProperties.Phone,
    });
}

会回来的 {"Name":"John","Phone":"123"}

更新:

同样的技术也可用于阵列场景:

public ActionResult SomeActionThatReturnsJson()
{
    var users = from element in GetObjectsFromSomeWhere()
                select new {
                    Name = element.Name,
                    Phone = element.Phone,
                };
    return Json(users.ToArray());
}

下面是一个扩展方法:

    public static string ToJSONArray<T>(this IEnumerable<T> list)
    {
        DataContractJsonSerializer s = new DataContractJsonSerializer(typeof(IEnumerable<T>));
        MemoryStream ms = new MemoryStream();
        s.WriteObject(ms, list);
        return GetEncoder().GetString(ms.ToArray());
    }

    public static IEnumerable<T> FromJSONArray<T>(this string jsonArray)
    {
        if (string.IsNullOrEmpty(jsonArray)) return new List<T>();

        DataContractJsonSerializer s = new DataContractJsonSerializer(typeof(IEnumerable<T>));
        MemoryStream ms = new MemoryStream(GetEncoder().GetBytes(jsonArray));
        var result = (IEnumerable<T>)s.ReadObject(ms);
        if (result == null)
        {
            return new List<T>();
        }
        else
        {
            return result;
        }
    }

它是用于数组的,但您可以很容易地对其进行调整。

使用json.net,可以将[jsonignore]属性放在不希望序列化的属性上。