Cannot pass data from Controller to View using ViewBag

Question

I set ViewBag in my Controller constructor and use it in _Layout.cshtml. This is what I have done many times in ASP.NET MVC (.NET Framework). The same code is not working in my new .NET6 ASP.NET Core application.

public HomeController(ILoggerFactory logger)
{
    CurrentUser = GetCurrentUser();
    ViewBag.CurrentUser = CurrentUser;
}

In _Layout.cshtml I have below code

</head>
@{
    AppUser _curUser = ViewBag.CurrentUser;
    // _curUser is null here!!
}
<body>

I also tried using ViewData but the same problem. I have done this many times in all my MVC web applications and I'm wondering why it's not working now.

Answer 1

The ViewData and ViewBag refer to the same underlying ViewData collection. Actually life of the ViewData or the ViewBag lies only during the current request.

I suppose that in your case result might be depending on the dependency injection used in your application.

For additional information see Pass data to views

Cannot pass data from Controller to View using ViewBag

Question

1 answers

solution1
0 ACCPTED 2022-09-27 20:59:11

Cannot pass data from Controller to View using ViewBag

Question

1 answers

solution1 0 ACCPTED 2022-09-27 20:59:11

solution1
0 ACCPTED 2022-09-27 20:59:11