Result vs. ActionResult in ASP.NET MVC

Introduction

In ASP.NET MVC, both ViewResult and ActionResult are classes used to represent the result of an action method.

1. ActionResult

ActionResult is an abstract base class for all action result types in ASP.NET MVC. It is the base class for various result types such as ViewResult, RedirectResult, JsonResult, etc. When you define an action method in a controller, you typically specify ActionResult as the return type.

For example

public ActionResult MyAction()
{
    // Action logic here
    return View(); // Returns a ViewResult
}

2. ViewResult

ViewResult is a specific type of ActionResult that represents a result that renders a view. When you return a ViewResult from an action method, it means that the framework should render a view associated with the action.

For example

public ViewResult MyAction()
{
    // Action logic here
    return View(); // Returns a ViewResult
}

Key differences in nutshell

The following are the key differences in nutshell.

ActionResult is more general: ActionResult is a more general type, and it can represent different types of results, not just views. It allows for flexibility in returning various result types.
ViewResult is specific to views: ViewResult is a specific type derived from ActionResult and is used when you specifically want to return a view from an action method.
ViewResult simplifies return type: If your action method is intended to return a view, using ViewResult directly can make your code more explicit and easier to understand.
ActionResult provides more options: If your action method needs to return different types of results based on certain conditions, using ActionResult allows you to return different types of results (e.g., RedirectResult, JsonResult, etc.) from the same action.

Moreover, in practice, you can often use ViewResult directly when you know your action will always return a view. If you need more flexibility or want to return different types of results, using ActionResult allows for that versatility.