Where to put controller-wide accessible objects

I would like give access to the (currently logged-in) user object to all controllers, and views, in my application. For example, I wa开发者_Go百科nt to put the users name in my "sidebar" partial, but don't know how to access the user object since that is stored in an other controller. Thanks in advance.

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You could use the Html.Action helper method. You could define a view model which will contain all the necessary information you would like to show about the currently logged in user (like his username for example) and then have a controller action which will use the User property of the controller to populate this view model and pass it to a corresponding partial view. Then inside your master page you would include this information using the Html.Action helper:

<div id="sidebar">
    @Html.Action("Index", "Users")
</div>

which will invoke the Index action of the UsersController:

public class UsersController
{
    public ActionResult Index()
    {
        UserViewModel model = ...
        return PartialView(model);
    }
}