ASP.NET MVC

Re: mvc controllers and json objects

crpietschmann — Fri, 03 Jul 2009 20:37:46 GMT

I know this is an old post, but I just figured out how to do this using a custom ModelBinder, so I thought I'd share the link to my solution here.

http://stackoverflow.com/questions/1077481/how-do-i-pass-a-dictionary-as-a-parameter-to-an-actionresult-method-from-jquery-a

Re: mvc controllers and json objects

DragonFist — Wed, 19 Dec 2007 03:47:35 GMT

I have no problem serializing the json manually. I was having trouble having the json string pass at all. Small strings were no problem but a json string wasn't passing to a parameter cast as either an object or string.

Re: mvc controllers and json objects

SteveSanderson — Mon, 17 Dec 2007 12:10:12 GMT

Hi there

It's pretty easy to handing incoming JSON data in an action method, by using either JavaScriptSerializer or the slightly more awkward DataContractJsonSerializer. For example:

[ControllerAction]
public void ProcessJSON(string customerJsonData)
{
    // Get a deserializer
    System.Web.Script.Serialization.JavaScriptSerializer serializer = 
           new System.Web.Script.Serialization.JavaScriptSerializer();

    // You could deserialize to a name-value pair, and access it as a weakly-typed object
    IDictionary<string, object> myObject =
           serializer.Deserialize<IDictionary<string, object>>(customerJsonData);
    ViewData["name"] = myObject["Name"];

    // Or, ideally, deserialize to a strongly-typed object
    Customer myCustomer = serializer.Deserialize<Customer>(customerJsonData);
    ViewData["name"] = myCustomer.Name;

    RenderView("CustomerDetails");
}

If you are trying to receive the JSON data as a strongly-typed .NET object directly on your parameter list (e.g. changing the method signature above to ProcessJSON(Customer customerJsonData)), then no, unfortunately that won't work, you have to deserialize manually. If you're familiar with MonoRail's JsonBinder, you might like to check out hammet's experiment to add MonoRail-style parameter binding to ASP.NET MVC.

mvc controllers and json objects

DragonFist — Mon, 17 Dec 2007 00:06:05 GMT

the mvc views seem capable of sending json as I have used them for this. However, I have several attempts to pass json objects as parameters to a controller action without success.

Is JSON simply not supported in this release?

Best,

Shawn