How to redirect on ASP.Net Core Razor Pages

Question

I am using the new Razor Pages in ASP.Net core 2
Now I need to redirect

I tried this, but the page does not redirect:

public class IndexModel : PageModel {     public void OnGet()     {         string url = "/.auth/login/aad?post_login_redirect_url=" + Request.Query["redirect_url"];          Redirect(url);     } } 

How to redirect?

Answer 1

You were very close. These methods need to return an IActionResult (or Task<IActionResult> for async methods) and then you need to return the redirect.

public IActionResult OnGet() {     string url = "/.auth/login/aad?post_login_redirect_url="        + Request.Query["redirect_url"];      return Redirect(url); } 

Razor pages documentation

However, you have a huge Open Redirect Attack because you aren't validating the redirect_url variable. Don't use this code in production.