How I can deserialize the dynamic key name using DataContractJsonSerializer

Question

0.00/5 (No votes)

See more:

I have a web service, the client program can post a key to one of its web method, and the method will return {"key-client-post", "value-from-server-side"}, the structure of return string is fixed, but the key name is dynamic, it depends on the client program.

My question is how I can deserialize the return string to .NET object using DataContractJsonSerializer.

Thanks.

Posted 23-May-12 4:33am

__Untitled

Add a Solution

Comments

__Untitled 23-May-12 21:23pm

So it is impossible to solve such a case using DataContractJsonSerializer, right?

3 solutions

Solution 1

Normally, deserialization based on Data Contract should go in a pair with serialization. Data Contract serializers have certain format, not all data can fit it. You define data classes and add attributes to it, and this defines format meta-data. In some cases, you can design the set of data classes to match some available data format.

Please see:
http://msdn.microsoft.com/en-us/library/ms733127.aspx[^].

—SA

Posted 23-May-12 5:43am

Sergey Alexandrovich Kryukov

Solution 3

Please refer similar discussion:
Deserialize JSON into C# dynamic object[^]

Posted 23-May-12 18:21pm

Prasad_Kulkarni

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

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

DARSHAN MODANI · Accepted Answer · 2012-05-23T16:45:00

Create a class which will hold the data from the string.

C#

[DataContract]
public class MyClass
{
    [DataMember]
    public string key;

    [DataMember]
    public string value;
}

Include using System.Runtime.Serialization;

Mechanism:
If the original string is in format : {"key-client-post", "value-from-server-side"}, Convert the string to the format : {"key" : "key-client-post", "value" : "value-from-server-side"}

Then use the DataContractJsonSerializer to deserialize the new string.

C#

static void Main(string[] args)
{
    String s_key = @"""key"":";
    String s_value = @"""value"":";
    
    String text = @"{""key1"", ""value1""}"; //The String to be deserialized
    String text_new = text.Insert(text.IndexOf('{')+1, s_key);
    text_new = text_new.Insert(text_new.IndexOf(',') + 1, s_value);
    Console.WriteLine(text_new);
    
    MemoryStream stream1 = new MemoryStream(ASCIIEncoding.Default.GetBytes(text_new));
    DataContractJsonSerializer deser = new DataContractJsonSerializer(typeof(MyClass)); 
    MyClass keyValue = (MyClass)deser.ReadObject(stream1);
    
    //Print deserialized values
    Console.WriteLine(keyValue.key);
    Console.WriteLine(keyValue.value);
}