CODE:扩展方法ToJSON() and ParseJSON()

AJAX编程经常需要Object<=>JSON之间转换，写了二个扩展方法：

public static string ToJSON(this object obj)

public static T ParseJSON<T>(this string str)

使用例子:

    protected void Page_Load(object sender, EventArgs e)

    {

        Person p = new Person

        {

            Name = "wuchang",

            Email = "wuchangx@qq.com",

            LastActive = DateTime.Now,

            Arr = new string[] { "arr1", "arr2" },

            Lst = new List<string>( new string[] { "lst1", "lst2" } )

        };

        string json = p.ToJSON();

        this.TextBox1.Text = json;

        Person pp = json.ParseJSON<Person>();

        this.TextBox2.Text = pp.ToJSON();

    }

 

实现

public static class JSONExtension

{

    public static string ToJSON(this object obj)

    {

        DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());

        using (MemoryStream ms = new MemoryStream())

        {

            serializer.WriteObject(ms, obj);

            return Encoding.Default.GetString(ms.ToArray());

        }

    }

    public static T ParseJSON<T>(this string str)

    {

        T obj = Activator.CreateInstance<T>();

        using (MemoryStream ms = new MemoryStream(Encoding.Unicode.GetBytes(str)))

        {

            DataContractJsonSerializer serializer = new DataContractJsonSerializer(obj.GetType());

            return (T)serializer.ReadObject(ms);

        }

    }

}

出处：http://wuchang.cnblogs.com