Question

when I use the following actionlink:

<%: Html.ActionLink("Study Cases", "Index", "CourseCases", new { id = Model.ID }, new { @class = "t-button", @style = "width:240px; color:white; text-align:center" })%>

The url address in the browser is:

http://localhost:11111/CourseCases/Index/9

How can I change it so the url will be

 http://localhost:11111/CourseCases?courseId=9

It works when I use:

 return RedirectToAction("Index", "CourseCases", new { courseId = id });

in the controller.
Thanks in adance.

Answer 1

Like this:

<%= Html.ActionLink(
    "Study Cases", 
    "Index", 
    "CourseCases", 
    new { courseId = Model.ID }, 
    new { 
        @class = "t-button", 
        @style = "width:240px; color:white; text-align:center" 
    }
) %>

The reason why your code generates http://localhost:11111/CourseCases/Index/9 is because the {id} is used by the default route that was generated when you created your ASP.NET MVC 3 application, so when you specify id = Model.ID it will match the route pattern definition in your Global.asax which is {controller}/{action}/{id} thus you get CourseCases/Index/9.