Viewbag for all Asp.Net MVC C#controllers

Question

I have an application in ASP.Net MVC, after the user login need to show his name at the top of the page always, regardless of which page he is.

This application is an administrative where will be the name of the company at the top, I saw some solutions to my problem but I can not decide which would be better, for having little knowledge.

1. Build a base controller by searching for the company name and returning it to a viewbag.

2. I don’t remember well because I didn’t find the question again, but it was to use the pattern [discriminação] us controllers (if someone can explain to me how it is done).

Now a question I have about viewbag, if I use the first option and create a controller who returns to this viewbag, how will I use them on the pages? In case I just need to use on Shared\_Layout, right ? Someone could give me an example?

I have little notion about this part which is hindering my learning, I would like a somewhat more didactic answer about the functioning of even the viewbag, I found other answers on this subject but could not fully understand them.

Answer 1

One way to solve your problem using viewbags would be by using partial view, then you could put a custom controller setting the viewbag and just give a @Html.RenderAction on your system’s shared layout page. That way we would have:

html In the example we will use as _Name.cshtml it can be in the same folder of _Layout.cshtml

<div>
    @Viewbag.nome
</div>

controller In the example we will put as Actioncontroller.Cs

public PartialViewResult Action(){
    Viewbag.nome = "nome";
    return PartialView("~/views/Shared/_Nome.cshtml");

}

_layout

@Html.RenderAction("Action", "Action");

Now there are several other solutions without using viewbag.