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POUsing ASP.NET MVC SubControllers with action parameters?
 

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    <p>I am experimenting with <a href="http://mhinze.com/subcontrollers-in-aspnet-mvc/" rel="nofollow noreferrer">MvcContrib subcontrollers</a>. Looking at the example in the source, your parent controller (HomeController) takes an action which takes the subcontroller (FirstLevelSubController) as a parameter:</p> <pre><code>public class HomeController : Controller { public ActionResult Index(FirstLevelSubController firstLevel) { ViewData["Title"] = "Home Page"; return View(); } } </code></pre> <p>In Home's index view, you call ViewData.Get like this to render the subcontroller and it's view:</p> <pre><code>&lt;div style="border:dotted 1px blue"&gt; &lt;%=ViewData["text"] %&gt; &lt;% ViewData.Get&lt;Action&gt;("firstLevel").Invoke(); %&gt; &lt;/div&gt; </code></pre> <p>The subcontroller's action gets called (ignore the secondlevelcontroller, the example is just demonstrating how you can nest multiple subcontrollers):</p> <pre><code>public class FirstLevelSubController : SubController { public ViewResult FirstLevel(SecondLevelSubController secondLevel) { ViewData["text"] = "I am a first level controller"; return View(); } } </code></pre> <p>This all works, the subcontroller's view gets rendered inside the parent view.</p> <p>But what if I need <strong>other parameters</strong> in my home controller's action? For example, I may want to pass a Guid to my controller's index method:</p> <pre><code>public class HomeController : Controller { public ActionResult Index(Guid someId, FirstLevelSubController firstLevel) { //Do something with someId ViewData["Title"] = "Home Page"; return View(); } } </code></pre> <p>There doesn't seem to be any way to do &lt;% ViewData.Get("firstLevel").Invoke(); %> with parameters. So I can't figure out how to link to my controller from another controller passing a parameter like this:</p> <pre><code>Html.ActionLink&lt;HomeController&gt;(x =&gt; x.Index(someThing.Id), "Edit") </code></pre> <p>Perhaps I am approaching this the wrong way? How else can I get my parent controller to use a subcontroller, but also do interesting stuff like accept parameters / arguments?</p>
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    1. USJames Allen
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