ExtJS: how to return json success w/ data using asp.net mvc

Question

I am trying to use ExtJS with Asp.Net MVC, and it is going fine so far. (Nice work on ExtJS) To make things easier, I need some help returning data from .net to ExtJS.

Answer 1

I used @Wellington's answer with VS2010 (beta2) and MVC 2 (beta), and got the following error:

Method 'System.String ToString(System.String)' has no supported translation to SQL.

Which, I think, is a serialization problem (?)

Here's what I changed to make it work..

public JsonResult Index()
{
    var json = new
    {
        success = true,
        data = from user in repository.Users
               select new JsonUser(user)
    };
    return Json(json);
}

JsonUser is a simple, serializable object - I got the idea from a podcast by @Scott Hanselman

Here's an example of JsonUser:

public class JsonUser
{
    public long id { get; set; }
    public string name { get; set; }
    public string dateJoined { get; set; }
    ...

    public JsonUser(User user)
    {
        id = user.ID;
        name = user.Name;
        dateJoined = user.DateJoined.ToString("yyyy-MM-dd");
        ...
    }
}