Passing ID to URL, ASP.NET MVC

Question

I am trying to pass an id to the URL, However I cant hard code the ID but I need to pass the id from the model.

It is basically a collection of a particular type of model displayed as a table. When the user clicks on the id value of the table i need to be able to pass the id to the URL so that it can open a corresponding detailed page of the same.

<a href="~/Instance/Details/[email protected](modelitem => item.Id)">   @Html.DisplayFor(modelitem => item.Id)</a>

This is what I am trying, need help:).

modelitem => item.Id this looks wrong. Shouldn't it be modelitem => modelitem.Id? — Lews Therin
– Lews Therin, Commented Aug 20, 2018 at 19:41

Shyju · Accepted Answer · 2018-08-20 19:45:58Z

6

First of all, use the Url.Action method to generate the correct relative url to the action method.

@foreach (var item in SomeCollection)
{
  <div>
       <a href="@Url.Action("Details","Instance",new { id = item.Id })"> 
                                            @Html.DisplayFor(modelitem => item.Id)
       </a>
  </div>
}

The Url.Action method will generate the url value to details action method, which includes the item.Id value in the url.

Assuming Instance is the controller name where your Details action method is present with id parameter.

public class InstanceController : Controller
{
   public ActionResult Details(int id)
   {
      return Content("Details of "+id);
      // to do : return a view with data queried using id
   }
}

edited Aug 20, 2018 at 19:45

answered Aug 20, 2018 at 19:39

Shyju

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6 Comments

Lews Therin Over a year ago

new { id = item.Id } should probably be new { id = Model.Id }

Shyju Over a year ago

@LewsTherin He is doing it inside a collection. So it should be the item he is loop is currently executing, which is item.Id.

Shyju Over a year ago

@Sam Axe I updated your edit. Since it is a loop, it should be modelitem => item.Id. If you use modelitem => modelitem .Id, it is not valid. You will get an error from razor.

Lews Therin Over a year ago

Oh okay, I missed that. Thanks for updating your answer.

Lews Therin Over a year ago

modelitem => item.Id still doesn't make any sense to me. The input variable modelitem isn't used in that lambda expression. Shouldn't it still be modelitem => modelitem.Id? Won't item be passed in to the modelitem input parameter when the lambda expression is evaluated?

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