Redirect to url in ASP MVC

Question

I have an action result method that inside is doing a Redirect(url). My question is how can I check that the url is valid before I do the redirect ?

public ActionResult RedirectUser()
{
    var url = "/Cars/Model/1"; //this is the url

    // now i should check if the redirect return a 200 code (the url is valid) and if is valid I should redirect to that url, else i should redirect to "/Home/Index"

    if(this.Redirect(url))
    {
       return this.Redirect(url);
    }
    else
    {
       return this.RedirectToAction("Index", "Home");
    }

    return this.RedirectToAction("Index", "Home");
}

Can anyone help me with an example ? I search on google but I couldn't find anything to help me. Thanks

Answer 1

You can use HttpClient to send a get request like so:

using (var client = new HttpClient())
{
    HttpResponseMessage response = await client.GetAsync("Cars/Model/1");
    if (response.IsSuccessStatusCode)
    {
         // redirect here
    }
}

Answer 2

Assuming the url that you're trying to redirect to is under your MVC app's control, you can use the url helper Url.Action to guarantee that it is valid.

Url.Action("Model","Cars", new {id=1});
//should yield "Cars/Model/1 if your routing is configured to have id to be optional as below:
routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}",
                defaults: new { controller = "Cars", action = "Model", id = UrlParameter.Optional }
            );

Warning: Your sample code may not reflect your prod code but url should not be hard-coded in the way your have. This will blow up when "Cars" is not at the root of app in your deployment environment.

Answer 3

Try this

public ActionResult RedirectUser()
{
    var url = "/Cars/Model/1"; //this is the url

     var controller = RouteData.Values["controller"].ToString();
 var action = RouteData.Values["action"].ToString();

    if(controller=="car"&& action=="Model")
    {
       return this.Redirect(url);
    }
    else
    {
       return this.RedirectToAction("Index", "Home");
    }

    return this.RedirectToAction("Index", "Home");
}