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Can't deserialize json properly

I have this json:
[{"trace":{"details":{"date":"[28-02-2016 11:04:26.856573]","type":"[info]","message":"[system done.]"},"context":{"context":[[{"ID":"john dillinger"}]]}}},{"trace":{"details":{"date":"[28-02-2016 11:04:26.856728]","type":"[info]","message":"[trace done.]"},"context":{"context":[[{"ID":"john dillinger"}]]}}}]
Newtonsoft.Json.JsonSerializationException: Cannot deserialize the current JSON array (e.g. [1,2,3]) into type, because the type requires a JSON object (e.g. {"name":"value"}) to deserialize correctly.
I've created this class for deserialize it:
public class Testing
{
public string date { get; set; }
public string type { get; set; }
public string message { get; set; }
public string context { get; set; }
}
and this is the code for deserialize the content:
string responseText = "json above";
var obj = JsonConvert.DeserializeObject<Testing>(responseText); //on this line the problem
in the obj line I get the exception. I'm a bit rusty with c# so I don't know exactly what am I doing wrong. Someone could enlighten me?

Your json is not a flat data as your Testing class is. Try using following
public class Details
{
public string date { get; set; }
public string type { get; set; }
public string message { get; set; }
}
public class Context
{
public List<List<ContextElement>> context { get; set; }
}
public class Trace
{
public Details details { get; set; }
public Context context { get; set; }
}
public class RootObject
{
public Trace trace { get; set; }
}
Just hit your json to http://json2csharp.com/ and it seems you need to add this type for the ID part of the context and modify the result so context uses this in the list.
public class ContextElement
{
public string ID { get; set; }
}
Your parsed json is of format
Check this with https://jsonformatter.curiousconcept.com/ yourself. Then you just need to make a C# classes to match that structure.

You need to deserialize a collection of Trace - like List<Trace>:
var obj = JsonConvert.DeserializeObject<List<Trace>>(responseText);
Assuming that you have the following DTOs:
public class Trace
{
public TraceValue trace;
}
public class TraceValue
{
public Details details;
public Context context;
}
public class Details
{
public String date;
public String type;
public String message;
}
public class Context
{
public List<List<IdItem>> context;
}
public class IdItem
{
public String ID;
}
Proof (response is just a line provided by you, but with escaped quotes, so that it can be put directly into the code):
var response =
"[{ \"trace\":{ \"details\":{ \"date\":\"[28-02-2016 11:04:26.856573]\",\"type\":\"[info]\",\"message\":\"[system done.]\"},\"context\":{ \"context\":[[{\"ID\":\"john dillinger\"}]]}}},{\"trace\":{\"details\":{\"date\":\"[28-02-2016 11:04:26.856728]\",\"type\":\"[info]\",\"message\":\"[trace done.]\"},\"context\":{\"context\":[[{\"ID\":\"john dillinger\"}]]}}}]";
var obj = JsonConvert.DeserializeObject<List<Trace>>(response);

I think you should use JavaScripSerializer
JavaScriptSerializer jsSerializer = new JavaScriptSerializer();
you can try
var obj = jsSerializer.Deserialize<Testing>(responseText);
I am not sure about this solution, may be it will work or not in your case.
But you can deserialize json string into string array of any dimension as:
var obj = jsSerializer.Deserialize<string[]>(responseText);
var obj = jsSerializer.Deserialize<string[][]>(responseText);

How Can I Deserialize JSON Data Using C#?

I have seen some other questions like this, but those are quite complex JSON data's that have objects within objects. Although the JSON I'm working with is never static, I doubt it's as complex as those. Also, it's my first time using JSON with C# so I'm a little clueless.
What I'm trying to achieve is to separate the data that is received from an API that I prompt using WebRequest in C#.
{
"johhny.debt": {
"id":35187540,
"name":"johnny.debt",
"profileIconId":786,
"Level":30,
"revisionDate":1428019045000
}
}
The returned JSON data is in a fashion like thereof.
I want to be able to access all of the properties of the above string in the following manner:
ID :
Name:
~~
~~
~~
... and so forth.
I'm assuming some type of class has to be made for this?
All help is appreciated, thank you all in advance.

Install Json.Net from Nuget
Install-Package Newtonsoft.Json
https://www.nuget.org/packages/Newtonsoft.Json/
Declare class for inner object ({"id":..., "name": ... }):
public class InnerObject
{
[JsonProperty("id")]
public int Id { get; set; }
[JsonProperty("name")]
public string Username { get; set; }
[JsonProperty("profileIconId")]
public int ProfileIconId { get; set; }
[JsonProperty("level")]
public int Level { get; set; }
[JsonProperty("revisionDate")]
public string RevisionDate { get; set; }
}
As you can see you can specify rename mapping from json fields to .Net object properties using JsonPropertyAttribute.
Read your json to Dictionary<string,InnerObject> and get value of "johhny.debt" key:
var dict = JsonConvert.DeserializeObject<Dictionary<string, InnerObject>>(jsonText);
var johhny = dict["johhny.debt"];
Or if your need always to parse exact json property 'johhny.debt', you could create root object class:
public class RootObject
{
[JsonProperty("johhny.debt")]
public InnerObject JohhnyDept { get; set; }
}
And deserialize it:
var root = JsonConvert.DeserializeObject<RootObject>(jsonText);
var johhny = root.JohhnyDebt;

Just Create a class like this
public class RootObject
{
public int Id { get; set; }
public string name { get; set; }
public int profileIconId { get; set; }
public int Level { get; set; }
public string revisionDate { get; set; }
}
then install json.Net and this code to your main method
var jsonObject=JsonConvert.DeserializeObject<RootObject>(jsonText);
That's all
Update
var obj = JObject.Parse(json);
var RootObject = new RootObject()
{
Id = (int)obj["johhny.debt"]["id"],
Level = (int)obj["johhny.debt"]["Level"],
name = (string)obj["johhny.debt"]["name"],
profileIconId = (int)obj["johhny.debt"]["profileIconId"],
revisionDate = (string)obj["johhny.debt"]["revisionDate"]
};

JavaScriptSerializer.Deserialize Gives Null Fields

I sent the following JSON to a WCF service which accepts Stream as a parameter.
{"ReservationStream":
{"clientFirstName":"Abe",
"clientLastName":"Lincoln",
"clientPhone":"0544944860",
"clientEmail":"abe#mail.com",
"pickupLocationID":"3699",
"pickupAddressString":"JFK Airport Terminal 1",
"pickupFlightNumber":"LY001",
"pickupAirline":"El Al",
"pickupAirportName":"John F Kennedy Intl",
}
}
In the debugger, the stream variable shows all values as expected. I want to deserialize into a class defined as follows:
public class ReservationStream
{
public String clientFirstName { get; set; }
public String clientLastName { get; set; }
public String clientPhone { get; set; }
public String clientEmail { get; set; }
public String pickupLocationID { get; set; }
public String pickupAddressString { get; set; }
public String pickupFlightNumber { get; set; }
public String pickupAirline { get; set; }
public String pickupAirportName { get; set; }
}
When I call
JavaScriptSerializer javaScriptSerializer = new JavaScriptSerializer();
ReservationStream structuredReservations = javaScriptSerializer.Deserialize<ReservationStream>(strJSON);
no exception is thrown, but all of the fields have null values. Where is my mistake?

I think it's because your JSON object is nested inside a ReservationStream tag.
Try with just:
{
"clientFirstName":"Abe",
"clientLastName":"Lincoln",
"clientPhone":"0544944860",
"clientEmail":"abe#mail.com",
"pickupLocationID":"3699",
"pickupAddressString":"JFK Airport Terminal 1",
"pickupFlightNumber":"LY001",
"pickupAirline":"El Al",
"pickupAirportName":"John F Kennedy Intl"
}

You're trying to deserialize an object containing a ReservationStream object rather than the ReservationStream object itself.
One way to get around this is to make a wrapper class which contains a ReservationStream and deserialize using this:
public class WrapperClass
{
public ReservationStream ReservationStream { get; set; }
}
WrapperClass wrapperClass = serializer.Deserialize<WrapperClass>(strJSON);

I once have the same problem and I removed the javaScriptSerializer and directly used the method parameter like this
public static string UpdateTemplateProperties(TemplateProperties templateProperties)
{
var x = templateProperties.Something
}
and I have the javascript object structure as you
just be sure to have the same name for the parameter and the first object-name in your javascript object literal

How do I deserialize a JSON array and ignore the root node?

I have next response from server -
{"response":[{"uid":174952xxxx,"first_name":"xxxx","last_name":"xxx"}]}
I am trying to deserialize this in next way -
JsonConvert.DeserializeObject<T>(json);
Where T = List of VkUser, but I got error.
[JsonObject]
public class VkUser
{
[JsonProperty("uid")]
public string UserId { get; set; }
[JsonProperty("first_name")]
public string FirstName { get; set; }
[JsonProperty("last_name")]
public string LastName { get; set; }
}
I always tryed
public class SomeDto // maybe Response as class name will fix it but I don't want such name
{
public List<VkUser> Users {get;set;}
}
What deserialization options can help me?

Use SelectToken:
string s = "{\"response\":[{\"uid\":174952,\"first_name\":\"xxxx\",\"last_name\":\"xxx\"}]}";
var users = JObject.Parse(s).SelectToken("response").ToString();
var vkUsers = JsonConvert.DeserializeObject<List<VkUser>>(users);
as pointed out by Brian Rogers, you can use ToObject directly:
var vkUsers = JObject.Parse(s).SelectToken("response").ToObject<List<VkUser>>();

System.MissingMethodException: Error while deserialization of json array

I am getting error while deserializing jsonString.
Error is Type 'oodleListingsUser' is not supported for deserialization of an array.
My code of deserialization is
string jsonString = new WebClient().DownloadString("http://api.oodle.com/api/v2/listings?key=TEST&region=region_value&category=category_value&format=json");
JavaScriptSerializer ser = new JavaScriptSerializer();
jsonOodleApi p = ser.Deserialize<jsonOodleApi>(jsonString);
My class defination of jsonOodleApi is
public class jsonOodleApi
{
public oodleCurrent current;
public oodleListings[] listings;
public oodleMeta meta;
public string state { get; set; }
}
Defination of oodleCurrent and oodleMeta I am not giving because its perfect !
Defination of oodleListings is
public class oodleListings
{
public string id { get; set; }
public string title { get; set; }
public oodleListingsUser user;
// I have skipped some of fields because it have no issue at all.
}
Defination of oodleListingsUser is
public class oodleListingsUser
{
public string id { get; set; }
public string url { get; set; }
public string name { get; set; }
public string photo { get; set; }
}
The problem is my jsonString sometimes returns only one value of user (type of oodleListingsUser), and sometimes it returns array of user, and sometimes it returns null of user !
When it returns only one user, it runs perfectly fine ! No issue.
But when it returns array of user, bloom ! error occurs Type 'oodleListingsUser' is not supported for deserialization of an array.
Even I have tried public oodleListingsUser[] user But it gives error as
No parameterless constructor defined for type of 'oodleListingsUser[]'
for the value which returns only one user !
Now what should i do to solve this issue ?

Try:
public oodleListings[] listings = new oodleListings[0];
Or make it a List<oodleListings> perhaps.