Convert c# object to json & deserialize back json to c# obje

Question

i need to create json string like this 

"DoiPerson": {

"originId": "1000009230",

"listId": "ORG_GLOBAL/ORG_BH/CUS",

"legalStatus": "N",

"lastName": "SUNDARESAN",

"firstName": "SUJAI",

"fullName": "SUJAI SUNDARESAN",

"sex": "M",

"function": "CEO",

"profOccupation": "1292156",

"dob": "03/12/1970 00:00:00.00000"

} 

so i create class

public class DoiPerson

{

public string originId { get; set; }

public string listId { get; set; }

public string legalStatus { get; set; }

public string lastName { get; set; }

public string firstName { get; set; }

public string fullName { get; set; }

public string sex { get; set; }

public string function { get; set; }

public string profOccupation { get; set; }

public string dob { get; set; }

} 

using this i am able to create proper json string 

string json = new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(personObj); 

i am sending that string to some API and getting response as json string in below format. 

 "DoiPerson": {

"originId": "1000009230",

"listId": "ORG_GLOBAL/ORG_BH/CUS",

"globalScore": "20"

}

i want to deserialize it and assign this to class object using below code:

DoiPerson deserialized = new System.Web.Script.Serialization.JavaScriptSerializer().Deserialize<DoiPerson>(jsonstring); 

 

but my DoiPerson class does not has  globalScore property so it is not converting properly and if i add globalScore property to my class it is converting json string into my object properly

BUT at the time of  creattion of json fom class object it also add that property shown below:

"DoiPerson": {

"globalScore" :=null, 

"originId": "1000009230",

"listId": "ORG_GLOBAL/ORG_BH/CUS",

"legalStatus": "N",

"lastName": "SUNDARESAN",

"firstName": "SUJAI",

"fullName": "SUJAI SUNDARESAN",

"sex": "M",

"function": "CEO",

"profOccupation": "1292156",

"dob": "03/12/1970 00:00:00.00000"

}

 but at the time of json creation i dont want that property 

please suggest any solution.