JSON 定义实体类，来个人解答一下吧。

Question

json.net微信C#

Answer 1

LZ 试试这个吧[Serializable]
    public class Menu
    {
        public BaseButton[] button;
    }    [XmlInclude(typeof(ViewButton))]
    [XmlInclude(typeof(ClickButton))]
    [XmlInclude(typeof(SubButton))]
    [Serializable]
    public abstract class BaseButton 
    {
        public string name;
    }    [Serializable]
    [XmlInclude(typeof(ViewButton))]
    [XmlInclude(typeof(ClickButton))]
    public class Button : BaseButton 
    {
        public string type;
    }
    [Serializable]
    public class ClickButton : Button 
    {
        public string key;
    }
    [Serializable]
    public class ViewButton : Button
    {
        public string url;
    }
    [Serializable]
    public class SubButton : BaseButton
    {
        public Button[] sub_button;
    }    public class Class1
    {
        public static Menu GetMenu()
        {
            Menu menu = new Menu()
            {
                //  一级菜单赋值
                button = new BaseButton[]
                {
                        new ClickButton(){name="1",key="V1001_1"},
                        new ClickButton(){name="2",key="V1001_02"},
                        new ClickButton(){name="3",key="V1001_3"},
                        new SubButton()
                        {
                                name="菜单",sub_button=new Button[]
                                {
                                    //左边二级菜单赋值
                                    new ViewButton(){name="1",url="1"},
                                     new ViewButton(){name="2",url="2"},
                                      new ViewButton(){name="3",url="3"}
                                }       
                        }
                }
            };
            return menu;
        }
    }

Answer 2

using System;
using System.Collections.Generic;
using Newtonsoft.Json;namespace TestJsonApi
{
    class Program
    {
        static void Main(string[] args)
        {
               TestJs();   
        }        public static void TestJs()
        {
            var b = new Book();
            b.BookId = Guid.NewGuid().ToString();
            //b.Name = "Pro C# 2010";
            b.SizeLists = new List<string>() { "SmallList", "MiddleList", "LargeList" };
           
            var b2 = new Book();
            b2.BookId = Guid.NewGuid().ToString();
            b2.Name = "Pro C++ 2010";         
            //b2.SizeLists = new List<string>() { "SmallList", "MiddleList", "LargeList" };
          
            var Books = new List<Book>();
            Books.Add(b);
            Books.Add(b2);            var settings = new JsonSerializerSettings();            settings.PreserveReferencesHandling = PreserveReferencesHandling.Objects;
            settings.NullValueHandling = NullValueHandling.Ignore;//忽略空值。
            string output = JsonConvert.SerializeObject(Books, Formatting.Indented, settings);
            Console.WriteLine(output);
            Console.Read();
        }
    }    [JsonObject(IsReference = true)]
    public class Book
    {
        [JsonProperty]
        public string BookId { get; set; }
        public string Name { get; set; }
        public IList<string> SizeLists { get; set; }
    }
}

Answer 3

 button = new BaseButton[]
                {
                       new ClickButton(){type="click",name=txtMenuLeftOne.Text,key="V1001_1"},
                       new ClickButton(){type="click",name=txtMenuCentenOne.Text,key="V1001_02"},
                       new ClickButton(){type="click",name=txtMenuRightOne.Text,key="V1001_3"},
                       new SubButton()
                        {
                                name="菜单",sub_button=new ButtonBase[] 
                                {
                                        //左边二级菜单赋值
                                        new ViewButton(){type="view",name=txtMenuLeftTwo.Text,url=txtMenuLeftUrlTwo.Text},
                                        new ViewButton(){type="view",name=txtMenuLeftThree.Text,url=txtMenuLeftUrlThree.Text},
                                        new ViewButton(){type="view",name=txtMenuLeftFour.Text,url=txtMenuLeftUrlFour.Text},
                                        new ViewButton(){type="view",name=txtMenuLeftFive.Text,url=txtMenuLeftUrlFive.Text},
                                        new ViewButton(){type="view",name=txtMenuLeftSix.Text,url=txtMenuLeftUrlSix.Text},
                                        //中间二级菜单赋值
                                        new ViewButton(){type="view",name=txtMenuCentenTwo.Text,url=txtMenuCentenUrlTwo.Text},
                                        new ViewButton(){type="view",name=txtMenuCentenThree.Text,url=txtMenuCentenUrlThree.Text},
                                        new ViewButton(){type="view",name=txtMenuCentenFour.Text,url=txtMenuCentenUrlFour.Text},
                                        new ViewButton(){type="view",name=txtMenuCentenFive.Text,url=txtMenuCentenUrlFive.Text}, 
                                        new ViewButton(){type="view",name=txtMenuCentenSix.Text,url=txtMenuCentenUrlSix.Text},
                                        //右边二级菜单
                                        new ViewButton(){type="view",name=txtMenuRightTwo.Text,url=txtMenuRightUrlTwo.Text},
                                        new ViewButton(){type="view",name=txtMenuRightThree.Text,url=txtMenuRightUrlThree.Text},
                                        new ViewButton(){type="view",name=txtMenuRightFour.Text,url=txtMenuRightUrlFour.Text},
                                        new ViewButton(){type="view",name=txtMenuRightFive.Text,url=txtMenuRightUrlFive.Text},
                                        new ViewButton(){type="view",name=txtMenuRightSix.Text,url=txtMenuRightUrlSix.Text},
                                }       
                        }
                }
错误
1无法将类型“wechatForm.ViewButton”隐式转换为“System.Windows.Forms.ButtonBase”new ViewButton() 说不能隐式转换为 System.Windows.Forms.ButtonBase”。可是后面是有继承关系的啊，我搞不明白了
   public class ViewButton : Button
    {
        public string url;
    }  public class Button : BaseButton
    {
        public string type;
    }

Answer 4

不懂 怎么定义 那JSON 示例的实体类，，

Answer 5

楼主，我那个回复有图有真相啊。
最重要的是这两句：
var settings = new JsonSerializerSettings();
 
            settings.PreserveReferencesHandling = PreserveReferencesHandling.Objects;
            settings.NullValueHandling = NullValueHandling.Ignore;//忽略空值。
            string output = JsonConvert.SerializeObject(Books, Formatting.Indented, settings);
            Console.WriteLine(output);

Answer 6

LZ  你的问题在这里
{
     "button":[
     {
          "type":"click",
          "name":"今日歌曲",
          "key":"V1001_TODAY_MUSIC"
      },
      {
           "type":"click",
           "name":"歌手简介",
           "key":"V1001_TODAY_SINGER"
      },
      {
           "name":"菜单",
           "sub_button":[
           {
               "type":"view",
               "name":"搜索",
               "url":"http://www.soso.com/"
            },
            {
               "type":"view",
               "name":"视频",
               "url":"http://v.qq.com/"
            },
            {
               "type":"click",
               "name":"赞一下我们",
               "key":"V1001_GOOD"
            }]
       }]
 }lz你没发现你的json不规则嘛？  你的button是一个数组，button我简称B
B[0] 和B[1]是一个类型，然而B[2]却是另一个类型，这样的jison转换是不会成功的对咯 json序列化不需要加 [Serializable] 标签对于你这样的json只能手动自己解析了，最好弄规则json序列化！！

Answer 7

试试fastCSharp        public class Menu
        {
            public Button[] button;
        }
        public class Button
        {
            public string type = "click";
            public string name;
            [fastCSharp.setup.cSharp.json(IsIgnoreDefaultValue = true)]
            public string key;
            [fastCSharp.setup.cSharp.json(IsIgnoreDefaultValue = true)]
            public Sub_button[] sub_button;
        }
        public class Sub_button
        {
            public string type = "view";
            public string name;
            [fastCSharp.setup.cSharp.json(IsIgnoreDefaultValue = true)]
            public string url;
        }
            string json = fastCSharp.setup.cSharp.json.toJson.Get(menu);