How to deserialize json data in C#

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I get response in following format.

strTokenNumber

={"code":200,"message":"Authorized","data":{"token":1545207965545}}
I am getting excpetion

Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'System.Collections.Generic.List`1[POSInvoiceDetailsIntegration.TokenResult]' because the type requires a JSON array (e.g. [1,2,3]) to deserialize correctly.

in following statement:

var userauthenticate = JsonConvert.DeserializeObject<UserAuthenticate>(strTokenNumber);

What I have tried:

 public class TokenResult
    {
       //[JsonProperty("TokenResult")]
       public string token { get; set; }
    }
public class UserAuthenticate   
    {
        //TokenResult token = new TokenResult();
        public string code { get; set; }
        public string message { get; set; }

        //public Array data { get; set; }
        //public List<string> data { get; set; }
        public List<TokenResult> data { get; set; }
    }

Posted 26-Nov-18 23:46pm

Member 11874411

Updated 27-Nov-18 0:02am

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2 solutions

Solution 2

The JSON you show doesn't match your classes - the "data" item is not a collection, buut a single instance.
If I take your JSON and feed to to a class generator: json2csharp - generate c# classes from json[^] I get these:

C#

public class Data
{
    public long token { get; set; }
}

public class RootObject
{
    public int code { get; set; }
    public string message { get; set; }
    public Data data { get; set; }
}

If I feed you classes some data, I get what I expect:

UserAuthenticate ua = new UserAuthenticate();
ua.code = "200";
ua.message = "Authorized";
ua.data = new List<TokenResult>();
ua.data.Add(new TokenResult() { token = "1545207965545" });
string json = Newtonsoft.Json.JsonConvert.SerializeObject(ua);

{"code":"200","message":"Authorized","data":[{"token":"1545207965545"}]}

I'd start by checking your data source.

Posted 27-Nov-18 0:03am

OriginalGriff

v2

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

F-ES Sitecore · Accepted Answer · 2018-11-26T23:52:00

Solution 1

In the json you have "data" is a single object, not an array\list so change your class definition;

public class UserAuthenticate   
    {
        public string code { get; set; }
        public string message { get; set; }

        public TokenResult data { get; set; }
    }

Posted 26-Nov-18 23:52pm

F-ES Sitecore

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Member 11874411 27-Nov-18 6:26am

this solved my problem.

How to deserialize json data in C#

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How to deserialize json data in C#

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