How do I use ViewData in ASP.NET MVC?

How do I use ViewData in ASP.NET MVC?

ViewData is a dictionary object that allows you to pass data from a controller to a view in ASP.NET MVC. You can set values in the controller like this: ViewData["Key"] = value; and access it in the view using @ViewData["Key"].

Can you give me an example of how to set and retrieve ViewData?

Sure! In your controller, you might have: ViewData["Message"] = "Hello, World!";. In your view, you can display it with @ViewData["Message"].

What are the limitations of using ViewData?

ViewData is dynamic, which means you lose compile-time checking. It's also less structured compared to using models, making it harder to maintain.

When should I prefer using ViewBag or ViewData?

Use ViewBag for a more dynamic approach with less code, but prefer strongly-typed models for better structure and maintainability.