public class CustomObjectModelBinder : IModelBinder {    public object BindModel(ControllerContext controllerContext, ModelBindingContext bindingContext) {        HttpCookie c = controllerContext.HttpContext.Request.Cookies["foo"]        CustomObject value = new CustomObject() {            foo.Name = c.Values["Name"],            foo.Rank = c.Values["Rank"]        }        return CustomObject    }}

然后在 Application_Start()加上

ModelBinders.Binders.Add(typeof(CustomObject), new CustomObjectModelBinder());