我应该在哪里放置我的asp.net-mvc强类型viewdata？

ViewData["Message"] = "Hello World";

<h2>@ViewData["Message"]</h2>

public class MyModel
{
    public string Message { get; set; }
}

public ActionResult Index()
{
    var model = new MyModel { Message = "Hello World" };
    return View(model);
}

<h2>@Model.Message</h2>