ASP.NET : serialize and deserialize hashtable with custom type for value-CodePudding

I want to send a hashtable over a post request; for that I have to convert the hashtable to json.

I'm using Newtonsoft JSON.NET for that.

Hashtable ht = new Hashtable();

User u = new User();
u.name = "username";
u.last = "userlastname";
u.age = 30;

ht.Add("user1", u);
ht.Add("user2", u);
ht.Add("user3", u);
ht.Add("user4", u);

string value = JsonConvert.SerializeObject(ht);

The issue I have is that the value type (User) is lost in when deserializing.

CodePudding user response：

You can use a TypeNameHandling option of Newtonsoft

    var jsonSerializerSettings = new JsonSerializerSettings()
    {
        TypeNameHandling = TypeNameHandling.All
    };
    string value = JsonConvert.SerializeObject(ht,jsonSerializerSettings);
    
    ht=JsonConvert.DeserializeObject<Hashtable>(value,jsonSerializerSettings);