CODEWITHSUNDEEP
asp.net-mvc
frank z
frank z

Reputation: 3

"{controller}/{action}/{id}" do not pass the parameter

In my StudenntController I hvae a method

public ActionResult ClassStudents(int? classRoomId)
{   
    var students = st.GetAll().Where(s => s.ClassRoomID == classRoomId);

    ViewBag.ClassRoomTitle = clr.GetAll().Where(c=>c.ClassRoomID == classRoomId).Single().ClassRoomTitle;

    return View(students);
}

when i enter localhostxxxx/Student/ClassStudent/1 the parameter classRoomId is null and i got a error: Sequence contains no elements I wonder why url: "{controller}/{action}/{id}" do not pass the parameter?

Upvotes: 0

Views: 940

Answers (2)

HTX9
HTX9

Reputation: 1717

In order for the route to work, the parameter must be named id. In your code, the parameter is named classRoomId. Change your method signature to:

public ActionResult ClassStudents(int? id)
{
     // Your code here
}

If you really want to name the parameter classRoomID then you would need to create a custom route.

Upvotes: 1

Ravi Gadag
Ravi Gadag

Reputation: 15881

you can set id paramter in routing . 

routes.MapRoute(
                name: "Default",
                url: "{controller}/{action}/{id}",
                defaults: new { controller = "Student", action = "ClassStudents", id = UrlParameter.Optional } 
            );

parameter should match the route values 

public ActionResult ClassStudents(int id)
{
     // Your code here

}

Upvotes: 2

Related Questions