Parsing JSON using Json.net

111

I'm trying to parse some JSON using the JSon.Net library. The documentation seems a little sparse and I'm confused as to how to accomplish what I need. Here is the format for the JSON I need to parse through.

{
    "displayFieldName" : "OBJECT_NAME", 
    "fieldAliases" : {
        "OBJECT_NAME" : "OBJECT_NAME", 
        "OBJECT_TYPE" : "OBJECT_TYPE"
    }, 
    "positionType" : "point", 
    "reference" : {
        "id" : 1111
    }, 
    "objects" : [ {
        "attributes" : {
            "OBJECT_NAME" : "test name", 
            "OBJECT_TYPE" : "test type"
        }, 
        "position" : {
            "x" : 5, 
            "y" : 7
        }
    } ]
}

The only data I really need from this is the stuff in the objects array. Is it possible for me to parse through that with something like the JSonTextReader and just pull out the things I want, like OBJECT_TYPE and the x and y position? I can't seem to get JSonTextReader to work the way I want it to and I find little to no examples of usage for it.

It seems like serializing first then using LINQ with my object would be ideal and every example I find discusses serializing the JSON first, but I'm not sure how I would build an object for this structure. Particularly the objects array which would need to be something like a list of Pairs of attribute and position objects. I have no idea how I would code my object so JSon.Net would know how to serialize that.

I thought I could write my own simple parser to just pull out everything I need into an attributes object that I created, but I'm having little luck.

Hopefully this all makes sense, any ideas?

Edit Report

-1

You use the JSON class and then call the GetData() function.

/// <summary>
/// This class encodes and decodes JSON strings.
/// Spec. details, see http://www.json.org/
///
/// JSON uses Arrays and Objects. These correspond here to the datatypes ArrayList and Hashtable.
/// All numbers are parsed to doubles.
/// </summary>
    using System;
    using System.Collections;
    using System.Globalization;
    using System.Text;

public class JSON
{
    public const int TOKEN_NONE = 0;
    public const int TOKEN_CURLY_OPEN = 1;
    public const int TOKEN_CURLY_CLOSE = 2;
    public const int TOKEN_SQUARED_OPEN = 3;
    public const int TOKEN_SQUARED_CLOSE = 4;
    public const int TOKEN_COLON = 5;
    public const int TOKEN_COMMA = 6;
    public const int TOKEN_STRING = 7;
    public const int TOKEN_NUMBER = 8;
    public const int TOKEN_TRUE = 9;
    public const int TOKEN_FALSE = 10;
    public const int TOKEN_NULL = 11;

    private const int BUILDER_CAPACITY = 2000;

    /// <summary>
    /// Parses the string json into a value
    /// </summary>
    /// <param name="json">A JSON string.</param>
    /// <returns>An ArrayList, a Hashtable, a double, a string, null, true, or false</returns>
    public static object JsonDecode(string json)
    {
        bool success = true;

        return JsonDecode(json, ref success);
    }

    /// <summary>
    /// Parses the string json into a value; and fills 'success' with the successfullness of the parse.
    /// </summary>
    /// <param name="json">A JSON string.</param>
    /// <param name="success">Successful parse?</param>
    /// <returns>An ArrayList, a Hashtable, a double, a string, null, true, or false</returns>
    public static object JsonDecode(string json, ref bool success)
    {
        success = true;
        if (json != null) {
            char[] charArray = json.ToCharArray(


                        
                        
                            answered 2012-05-22T07:03:32.807

Parsing JSON using Json.net

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