ASP.NET MVC. I don’t know how to use Url.action to pass an object to the controller

Question

I am new to asp.net MVC. I managed to create my view and display the data (Gridview). In addition, I managed to create a hyperlink (using Url.Action) that passes strings and int types. However, I want to create a hyperlink that refers to a more complex type. The class associated with my view has a link to a list. I want to create an additional ActionResult in my controller that receives as a List parameter (see below)

public ActionResult ViewItems(List<Items> c) { return View(c); } 

My idea is when you need to pass this list to the controller, and then the controller will call the corresponding view. I tried (see below), but I'm just empty.

 <asp:HyperLink ID="LinkContractID" runat="server" NavigateUrl='<%#Url.Action("ViewItems", new {c = **((Contract)Container.DataItem).ContractItems.ToList<Items>(**)}) %>' Text='<%# Eval("ContractId") %>'></asp:HyperLink> 

Answer 1

As in the previous answer, you are not using asp controls. However, there are also disadvantages with Html.ActionLink, this is not so good if you want, for example, to put a link to the image. In this case, the syntax will be

 <a href="<%= Url.Action( "ShowListPage", "MyController", new { modelId = 101 }) %>"> <img src="img.gif" /> </a> 

Also, with your action in the controller, you would ideally have to do this and get a model in order to get to a view that is strongly typed for that model. Thus, you have a model object with a constructor with an identifier, for example

 public MyModel(int modelId) { this.TheListThatHoldsTheGridData = MyDataLayerProc(modelId); } 

So you can have your actions in the MyController controller, return a ShowListPage view (associated with the MyModel instance), for example,

 public ActionResult ShowListPage(int modelId) { return View(new MyModel(modelId)); } 

Hope this helps,

Mark

Answer 2

If you are looking for a grid, this tutorial shows how to create a grid with MVC.

Answer 3

With MVC you should not use Gridview and asp: controls. If you want to create a link, just use <% = Html.ActionLink (...)%> with the necessary parameters.