How to deserialize JSON to object property (using DataContractJsonSerializer)

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I do have these JSON text to deserialize (they are part of bigger structure, just to keep it simple):

{"name":"whatever","value":0}
{"name":"objectProperty","value":{"A":1,"B":2,"C":3,"D":4}}

when I do want to deserialize into the C# object:

C#

public class Rootobject
{
    public string name { get; set; }
    public int value { get; set; }
}

I will get in 1st case:

whatever : 0

in the second case I get:

objectProperty : {object}

the problem is that I'm not able to get any value from the

{object}

.

when I do use this C# class to deserialize:

C#

public class Rootobject
{
    public string name { get; set; }
    public Value value { get; set; }
}

public class Value
{
    public int A { get; set; }
    public int B { get; set; }
    public int C { get; set; }
    public int D { get; set; }
}

I will get an error:

Expecting state 'Element'.. Encountered 'Text'  with name '', namespace ''.

Is there a way how to tell deserializer to which class it should deserialize? Or any idea how to solve this problem?

thx,
R.

Posted 10-Sep-15 3:11am

lumiklumik

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2 solutions

Solution 1

Add

C#

[DataContract]

annotation to your class and

C#

[DataMember]

annotation to you class properties

C#

[DataContract]
    internal class Person
    {
        [DataMember]
        internal string name;

        [DataMember]
        internal int age;
    }

Posted 17-Sep-15 2:50am

vagelis1

Comments

lumiklumik 19-Nov-15 7:48am

Sorry you probably didn't understand the issue. I do have JSON sipmple object with just name and value property

C# representation:


public class MyJSON 
{
  public string name;
  public object value;
}

now here is the JSON content I want to deserialize

1st scenario:
{"name":"whatever","value":0}
2nd scenario:
{"name":"objectProperty","value":{"A":1,"B":2,"C":3,"D":4}}

in 1st scenario all works fine in the 2nd scenario value holds just a {object} with nothing inside and I'm not able to persuate serializer to return in value something usable for the 2nd scenario

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lumiklumik · Accepted Answer · 2015-11-19T02:23:00

Solution 2

Solution for me is to use http://www.newtonsoft.com/json[^] instead of standard system runtime serialization.

this library puts "complex content" in string representation which is enough for me for now.

Posted 19-Nov-15 2:23am

lumiklumik