ServiceStack.Text deserialize string into single object null reference

Question

I have the following code. With JSON.NET it works fine where I can deserialize the string into the CustomMaker object. With ServiceStack.Text I get null. I've tried doing { get; set; } and removing and adding the constructor.

With JSON.NET it simply worked like JsonConvert.DeserializeObject(xString);

Any idea why this does not work with ServiceStack.Text?

    static void Main(string[] args) {
        string xString = "{\"error\":\"Invalid token 1 #556264\"}";
        Console.WriteLine(xString);
        CustomMaker xSLBM = TypeSerializer.DeserializeFromString<CustomMaker>(xString);
        Console.WriteLine(string.IsNullOrWhiteSpace(xSLBM.error) ? "error is null" : xSLBM.error);
        Console.ReadLine();
    }

    [Serializable]
    public class CustomMaker {
        public int UserID;
        public String error;
        public CustomMaker() { }
    }

edit: This code also produces null:

    static void Main(string[] args) {
        JsConfig.IncludePublicFields = true;
        string xString = "{\"error\":\"Invalid token 1 #556264\"}";
        Console.WriteLine(xString);
        CustomMaker xSLBM = TypeSerializer.DeserializeFromString<CustomMaker>(xString);
        Console.WriteLine(string.IsNullOrWhiteSpace(xSLBM.error) ? "error is null" : xSLBM.error);
        Console.ReadLine();
    }

    [Serializable]
    public class CustomMaker {
        public CustomMaker() { }
        public int UserID { get; set; }
        public String error { get; set; }
    }

mythz · Accepted Answer · 2015-06-05 04:25:53Z

3

By Default ServiceStack only serializes public properties so you could refactor your DTO to include properties, e.g:

public class CustomMaker {
    public int UserID { get; set; }
    public String error { get; set; }
}

Or if you wanted to serialize public fields you can specify this with:

JsConfig.IncludePublicFields = true;

Also you need to use the JsonSerializer class, e.g:

CustomMaker xSLBM = JsonSerializer.DeserializeFromString<CustomMaker>(xString);

Or string.ToJson() or T.FromJson<T>(string) extension methods, e.g:

CustomMaker xSLBM = xString.FromJson<CustomMaker>();

The TypeSerializer class is only for serializing/deserializing the JSV Format, not JSON.

edited Jun 5, 2015 at 4:25

answered Jun 5, 2015 at 1:13

mythz

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3 Comments

SteveGSD Over a year ago

I've already tried the property method, this code also produces null.

mythz Over a year ago

@CowKing see my update, you need to use the JsonSerializer class or ToJson/FromJson extension methods.

SteveGSD Over a year ago

That did the trick, thanks! I guess the error was my fault in not understanding the difference between JSON and JSV.

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