ASP.NET Core MVC is a framework used to develop web applications, also used for building modern and dynamic web applications. It is developed to run on multiple environments like Windows, Linux, and macOS. These operating systems provide a rich set of features that make it easy to build and deploy web applications. Some of the key features of ASP.NET Core MVC include dependency injection, routing, model binding, validation, and Razor views for building UI. It also provides support for building RESTful APIs, where developers can create scalable and flexible web applications.

The main problem arises when we want to redirect to the page which we want to occur when we perform any specific event or action like submitting the form or login into the application but by default, it reloads and shows the same page again, and if we want to redirect into the desired page where it is showing the actual updated record, then we can use redirectToAction("page name")method.

How to use the redirectToAction() method?
The redirectToAction() method is used in frameworks like ASP.NET and ASP.NET Core. This method is used to redirect from one web page to the desired page. The RedirectToAction() method is part of the Controller class, which is used to handle incoming HTTP requests. The method takes one or more parameters to specify the action and controller to redirect to.

Here's an example to demonstrate the usage of the RedirectToAction() method in ASP.NET MVC.

Let's say you have a controller named HomeController with two action methods: Index() and About(). The Index() action method displays the home page, and the About() action method displays information about the website.
using System.Web.Mvc;

public class HomeController : Controller
{
    public ActionResult Index()
    {
        return View();
    }
    public ActionResult About()
    {
        return View();
    }
}

Let's assume that you want to redirect the user from the Index() action method to the About() action method when a certain condition is met. You can achieve this using the RedirectToAction() method.
public class HomeController : Controller
{
    public ActionResult Index()
    {
        if (/* check condition */) // Replace this with your condition
        {
            return RedirectToAction("About");
        }
        return View();
    }
    public ActionResult About()
    {
        return View();
    }
}

In the example above, if the condition inside the Index() action method evaluates to true, the RedirectToAction() method is called with the parameter "About". This redirects the user to the About() action method, and the associated view is rendered.

The RedirectToAction()  method can also accept additional parameters to pass data between actions. For example

return RedirectToAction("About", new { id = 123 });

In this case, the About() action method can receive the id parameter to perform further processing.

The RedirectToAction() method in ASP.NET is used to redirect users from one action method to another within the same or different controller. It is commonly used in MVC applications for navigation and routing purposes. Using this method, you can control the flow of your application and redirect users based on specific conditions or events.
FAQ'S

Q1. What's the difference between RedirectToAction() and Redirect() methods?
A. The RedirectToAction() method is used to redirect users to another action method within the application, while the Redirect() method is used to redirect users to a different URL or external website.

Q2. Can I redirect to an action method in a different controller?
A. Yes, you can use the RedirectToAction() method to redirect to an action method in a different controller by specifying the controller name as a parameter.

Q3. Is it possible to redirect to an external URL using RedirectToAction()
A. No, the RedirectToAction() method is specifically designed for redirecting within the application. If you need to redirect to an external URL, you should use the Redirect() method and provide the URL as a parameter.