What is RedirectToAction in Asp.Net MVC? How to use RedirectToAction in Asp.Net Core MVC?

 In ASP.NET MVC, the RedirectToAction method is used to redirect the user's browser to another action method within the same or a different controller. Here's an example of how to use RedirectToAction in a controller action method:

csharp
public ActionResult MyAction()
{
    // Do some work

    // Redirect the user to the "Index" action method in the "Home" controller
    return RedirectToAction("Index", "Home");
}

In this example, the MyAction method redirects the user to the Index action method in the Home controller. The RedirectToAction method takes two parameters: the name of the action method to redirect to, and the name of the controller that contains the action method. The method returns a RedirectToActionResult that tells the MVC framework to redirect the user's browser to the specified action method.

You can also pass route values to the action method you're redirecting to. Here's an example:

csharp
public ActionResult MyAction()
{
    // Do some work

    // Redirect the user to the "Details" action method in the "Products" controller,
    // passing the product ID as a route value
    return RedirectToAction("Details", "Products", new { id = 123 });
}

In this example, the MyAction method redirects the user to the Details action method in the Products controller, passing the product ID 123 as a route value. The RedirectToAction method takes a third parameter that is an object containing the route values to pass to the action method being redirected to. These route values will be used to generate the URL that the user's browser will be redirected to.