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POChanging the ViewBag inside a Controller that is NOT a child action, and retrieving it in the View context
 

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  1. POChanging the ViewBag inside a Controller that is NOT a child action, and retrieving it in the View context
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    <p>Our application has a global Controller that all other Controllers inherit from; from within, in the <code>OnResultExecuting</code> override, I access an item (something obtained by accessing the Session, the <code>HttpContext</code> and the Web.config) that I store in the</p> <p><em>filterContext.ParentActionViewContext.ViewBag</em></p> <p>and this allows me to access this item in the ViewBag later in the lifecycle of the request.</p> <p><strong>PROBLEM</strong>: some of those filterContext are NOT child Action, and as such their <em>ParentActionViewContext</em> field is null, and I don't know of any other way to access the ViewBag.</p> <p><strong>QUESTION</strong>: if my controller stumbles upon a non-child Action, how can I still pass this item to the ViewBag?</p> <p>I would like to stress my inexperience with ASP.Net MVC4 - if there is a better way to approach this same problem, please do not hesitate to suggest it.</p> <p>EDIT: adding some code for clarification.</p> <p>This is where I save <strong>myItem</strong> in the ViewBag in my Controller method:</p> <pre><code>protected override void OnResultExecuting(ResultExecutingContext filterContext) { [...] if (filterContext.ParentActionViewContext != null &amp;&amp; filterContext.ParentActionViewContext.ViewBag != null) { filterContext.ParentActionViewContext.ViewBag["DealerId"] = myItem; } [...] base.OnResultExecuting(filterContext); } </code></pre> <p>And this is where I retrieve it inside my HtmlHelper:</p> <pre><code>public static MvcHtmlString DealerSpecificLessStyleSheet(this HtmlHelper htmlHelper) { var linkBuilder = new TagBuilder("link"); var dealerReferenceGuid = (string)htmlHelper.ViewBag["DealerId"]; /* Do something with this ID */ [...] return new MvcHtmlString(linkBuilder.ToString()); } </code></pre>
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    1. USEmanuele Ciriachi
    1. USEmanuele Ciriachi
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    1. COcould you please share some code?
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      1. POChanging the ViewBag inside a Controller that is NOT a child action, and retrieving it in the View context
      1. USidipous
    2. COSure, I will modify the OP soon.
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      1. POChanging the ViewBag inside a Controller that is NOT a child action, and retrieving it in the View context
      1. USEmanuele Ciriachi
    3. CODone, added code sample.
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      1. POChanging the ViewBag inside a Controller that is NOT a child action, and retrieving it in the View context
      1. USEmanuele Ciriachi
 

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