Converting a string to JSON in C#

问题:

I'm trying to use Simple JSON to convert this string to JSON :

"{\"objects\":[{\"id\":1,\"title\":\"Book\",\"position_x\":0,\"position_y\":0,\"position_z\":0,\"rotation_x\":0,\"rotation_y\":0,\"rotation_z\":0,\"created\":\"2016-09-21T14:22:22.817Z\"},{\"id\":2,\"title\":\"Apple\",\"position_x\":0,\"position_y\":0,\"position_z\":0,\"rotation_x\":0,\"rotation_y\":0,\"rotation_z\":0,\"created\":\"2016-09-21T14:22:52.368Z\"}]}"

Unfortunately, it appears that Visual Studio doesn't have Interactive Debugging Console. As in, placing a debugger on a line, and stepping into that part of the code in a live interactive console. Where I would otherwise be able to experiment with SimpleJSON's library and see how to make this work. By all means, correct me if I'm wrong!

Being that that's impossible though, would anyone know how to accomplish this? I have tried this :

JSONData jsonData = new JSONData(my_json_string);

But that escapes the string even more and keeps it a string :

"\"{\\\"objects\\\":[{\\\"id\\\":1,\\\"title\\\":\\\"Book\\\",\\\"position_x\\\":0,\\\"position_y\\\":0,\\\"position_z\\\":0,\\\"rotation_x\\\":0,\\\"rotation_y\\\":0,\\\"rotation_z\\\":0,\\\"created\\\":\\\"2016-09-21T14:22:22.817Z\\\...

I'm new to C#, but I'm surprised there's nothing native to C# that would make something as common as parsing JSON more accessible. Is there one?

回答1:

First, create your data model. You can use json2sharp, very helpful tool.

public class Item
{
    public int id { get; set; }
    public string title { get; set; }
    public int position_x { get; set; }
    public int position_y { get; set; }
    public int position_z { get; set; }
    public int rotation_x { get; set; }
    public int rotation_y { get; set; }
    public int rotation_z { get; set; }
    public string created { get; set; }
}

Next use Newtonsoft.Json and call deserialize method.

var list = JsonConvert.DeserializeObject<List<Item>>(Yourjson);

回答2:

The question asks how to convert a string to a JSON object... This can be achieved without using a Class or data model, as follows:

using Newtonsoft.Json;

string str = "{\"objects\":[{\"id\":1,\"title\":\"Book\",\"position_x\":0,\"position_y\":0,\"position_z\":0,\"rotation_x\":0,\"rotation_y\":0,\"rotation_z\":0,\"created\":\"2016-09-21T14:22:22.817Z\"},{\"id\":2,\"title\":\"Apple\",\"position_x\":0,\"position_y\":0,\"position_z\":0,\"rotation_x\":0,\"rotation_y\":0,\"rotation_z\":0,\"created\":\"2016-09-21T14:22:52.368Z\"}]}";
dynamic json = JsonConvert.DeserializeObject(str);

Now, you can access the json contents as follows:

json["objects"][0]["title"];

returns "Book"

One option for an "Interactive Debugging Console" where you can play around with C# code is Xamarin Workbooks... microsoft.com/en-us/xamarin/tools/workbooks/

Xamarin Workbooks provide a blend of documentation and code that is perfect for experimentation, learning, and creating... blah blah blah

回答3:

Did you try system utilities?

Like this one https://msdn.microsoft.com/ru-ru/library/system.json.jsonvalue.parse%28v=vs.95%29.aspx

You can use

public static JsonValue Parse(string jsonString)

from JsonValue class and cast then to jsonobject or anything you want.