C#/MVC Web app - Dynamic object from JSON [duplicate]

Question

I've been looking over the Internet but didn't find something relate to my problem.

I have visual studio 2017. Working in 4.6.1 .NET framework. The application is an asp.net MVC 4 application (standard).

I have a controler Dataset :

public class DatasetController : Controller
{
    [System.Web.Http.HttpPost]
    public JsonResult Push(dynamic data)
    {
        try
        {
            //here data has a value of {object} and is object typed
        }
        catch(Exception ex)
        {
        }
        return Json(null);
    }
}

The client can push any kind of data he wants. I will handle the structure from the dynamic object. I tried to switch to IDictionary type. But sub object still get the {object} value thing...

Here is the JSON sent (with content type as application/json) through Postman.

{
  data: {
    ApplicationName: "test",
    TestObject: {
      Name:"TestObject",
      TestInt: 42
    }
  }
}

My problem is I don't know how to deal with this kind of object. How can I retrieve information from ? I can't call :

var test = data.ApplicationName

It will throw a RuntimeBinderException with message "object" does not contain a definition for ApplicationName.

With strongly typed variables or interfaces I never ran into such a problem (bassically obvious...).

Please tell me if my post lack of information.

Thank you for your time.

EDIT : Added precisions about my problem and the Exception I could get trying to work with this object

check stackoverflow.com/a/17050505/2810015 if it solved your problem. — Nimish goel
– Nimish goel, Commented May 9, 2017 at 10:32

Community · Accepted Answer · 2017-05-23 12:02:41Z

As Nimish comment on the question. Here is a post answering my problem : Passing dynamic json object to C# MVC controller

The problem is coming from the Json.Net serializer not used by default by the Controller serializer. So we create value provider

public sealed class JsonDotNetValueProviderFactory : ValueProviderFactory
{
    public override IValueProvider GetValueProvider(ControllerContext controllerContext)
    {
        if (controllerContext == null)
            throw new ArgumentNullException("controllerContext");

        if (!controllerContext.HttpContext.Request.ContentType.StartsWith("application/json", StringComparison.OrdinalIgnoreCase))
            return null;

        var reader = new StreamReader(controllerContext.HttpContext.Request.InputStream);
        var bodyText = reader.ReadToEnd();

        return String.IsNullOrEmpty(bodyText) ? null : new DictionaryValueProvider<object>(JsonConvert.DeserializeObject<ExpandoObject>(bodyText, new ExpandoObjectConverter()), CultureInfo.CurrentCulture);
    }
}

Then creating a Wrapper in order to strongly type the parameter :

public class JsonDynamicWrapper
{
    /// <summary>
    /// Dynamic json obj will be in payload.
    /// 
    /// Send to server like:
    /// 
    /// { payload: data }
    /// </summary>
    public dynamic payload { get; set; }
}

Then updating the Push method :

[System.Web.Http.HttpPost]
public JsonResult Push(JsonDynamicWrapper data)
{
    try
    {
        var test = data.payload.ApplicationName;
    }
    catch(Exception ex)
    {
    }
    return Json(null);
}

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