asp.net中json对象 asp.net json教程

.net FrameWork 3.5 内置了对JSON的支持，我们可以直接使用。
一。准备
首先引用：System.ServiceModel.Web.dll ,System.Runtime.Serialization.dll 。
然后在using里

using System.Runtime.Serialization;  
 
    using System.Runtime.Serialization.Json;

二。编写需要序列化的类

using System.Runtime.Serialization;  
 
    namespace Dockty.Data  
 
    {  
 
        [DataContract(Namespace = "http://www.dockty.com")]  
 
        public class ArtTags  
 
        {  
 
            public ArtTags() { }  
 
            [DataMember(Order = 0)]  
 
            public int ID { get; set; }  
 
            [DataMember(Order = 1)]  
 
            public int TagID { get; set; }  
 
            [DataMember(Order = 2)]  
 
            public int ArtID { get; set; }          
 
        }  
 
    }

定义好要序列化的对象和顺序。

三。JSON帮助类

using System.IO;  
 
    using System.Runtime.Serialization.Json;  
 
    using System.Text;  
 
     
 
    namespace Dockty.Data  
 
    {  
 
        public static class JsonHelper<T>  
 
        {  
 
            static JsonHelper()  
 
            { }  
 
     
 
            /// <summary>  
 
            /// 序列化为JSON对象  
 
            /// </summary>  
 
            /// <param name="obj"></param>  
 
            /// <returns></returns>  
 
            public static string WriteObject(T obj)  
 
            {  
 
                var serializer = new DataContractJsonSerializer(typeof(T));  
 
                var mstream = new MemoryStream();  
 
                serializer.WriteObject(mstream, obj);  
 
                byte[] Bytes = new byte[mstream.Length];  
 
                mstream.Position = 0;  
 
                mstream.Read(Bytes, 0, (int)mstream.Length);  
 
                return Encoding.UTF8.GetString(Bytes);  
 
            }  
 
     
 
            /// <summary>  
 
            /// JSON对象反序列化  
 
            /// </summary>  
 
            /// <param name="data"></param>  
 
            /// <returns></returns>  
 
            public static T ReadObject(string data)  
 
            {  
 
                var mstream = new MemoryStream(Encoding.UTF8.GetBytes(data));  
 
                var serializer = new DataContractJsonSerializer(typeof(T));  
 
                return (T)serializer.ReadObject(mstream);  
 
            }  
 
        }  
 
    }

四。序列化与反序列化

ArtTags tags = new ArtTags() { ArtID = 1, ID = 1, TagID = 1 };  
 
    //序列化  
 
    string strTags = JsonHelper<ArtTags>.WriteObject(tags);  
 
    //反序列化  
 
    ArtTags newTags = JsonHelper<ArtTags>.ReadObject(strTags);

作者 Dockty