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C# ASP.NET MVC Basics Controllers Using Action Result Types

Posted by Amy Shah
Amy Shah
25,337 Points

problem with ASP.NET basics question about using action result

I am trying to find the answer to this question

Challenge Task 1 of 1

Update the provided VideoGamesController.Detail action method to use ActionResult for its return type instead of a string. In the action method, return the result of a call to the base controller's Content method. Keep the content the same by passing the string literal "Welcome to the Video Game Detail page!" to the Content method. Bummer! Your code could not be compiled. Please click on "Preview" to view the compiler errors. Restart Preview Get Help Recheck work VideoGamesController.cs

tent 1 using System.Web.Mvc; 2 ā€‹ 3 namespace Treehouse.Controllers 4 { 5 public class VideoGamesController : Controller 6 { 7 public actionResult Detail() 8 { 9 return new ContentResult() 10 { 11 return Content("Welcome to the Video Game Detail page!"); 12 } 13

14 } 15 } 16 }

VideoGamesController.cs 
using System.Web.Mvc;

namespace Treehouse.Controllers
{
    public class VideoGamesController : Controller
    {
        public actionResult Detail()
        {
            return new ContentResult()
            {
               return Content("Welcome to the Video Game Detail page!");
            }

        }
    }
}

6 Answers

Amy Shah
Amy Shah
25,337 Points

this answer did work: using System.Web.Mvc;

namespace Treehouse.Controllers { public class VideoGamesController : Controller { public ActionResult Detail() { return Content("Welcome to the Video Game Detail page!");

    }
}

}

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

Amy Shah ā€” Good job. :+1: That's exactly what I was suggesting.

But normally you would give "best answer" to the answer that gave you the information to resolve your problem. :smirk:

bkraider
bkraider
7,837 Points
bkraider
bkraider
7,837 Points

The Controller class provided by ASP.NET MVC has the method ContentResult. The method name is Content and it takes string as the input parameter. 

protected internal ContentResult Content(string content);

So in the Detail method we change the return type to the ActionResult and call the method Content and pass it a string value

using System.Web.Mvc;

namespace Treehouse.Controllers
{
    public class VideoGamesController : Controller
    {
        public ActionResult Detail()
        {
            return Content("Welcome to the Video Game Detail page!");           
        }
    }
}
Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

I see two issues:

  • you wrote "actionResult" (lower-case "a"), but the return type should be "ActionResult" (capital "A")
  • you only need the inner return statement to directly return the result of calling Content
Amy Shah
Amy Shah
25,337 Points
Amy Shah
Amy Shah
25,337 Points

https://teamtreehouse.com/library/aspnet-mvc-basics/controllers/using-action-result-types-2

Amy Shah
Amy Shah
25,337 Points

the above is the link to the question

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

:information_source: By using the "Get Help" button, the system already created a link to the challenge for you, in the form of the "View Challenge" button in the upper right of the page. :arrow_upper_right:

Amy Shah
Amy Shah
25,337 Points
Amy Shah
Amy Shah
25,337 Points

I tried this but it did not work

using System.Web.Mvc;

namespace Treehouse.Controllers { public class VideoGamesController : Controller { public ActionResult Detail() { return Content = ("Welcome to the Video Game Detail page!"); } } }

Steven Parker
Steven Parker
231,268 Points
Steven Parker
Steven Parker
231,268 Points

There is a stray equal sign ("=") stuck between the call to Content and its parameter.

Jeanette Brown
Jeanette Brown
20,485 Points
Jeanette Brown
Jeanette Brown
20,485 Points

using System.Web.Mvc;

namespace Treehouse.Controllers { public class VideoGamesController : Controller

{ public string Detail() { return "Welcome to the Video Game Detail page!"; }

} }