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    <p>I could not reproduce this. I had to simplify your code and make some assumptions. But the following worked fine for me.</p> <p>_Layout.cshtml</p> <pre><code>@using MyProject.Helpers &lt;title&gt;@ViewBag.Title&lt;/title&gt; @Html.RenderAssetStyles() @Html.RenderAssetScripts() @RenderBody() </code></pre> <p>View.cshtml</p> <pre><code>@using MyProject.Helpers @{ ViewBag.Title = "View"; Html.RequireAssets(Asset.Grid, Asset.FileUpload); Layout = "~/Views/Shared/_Layout.cshtml"; } </code></pre> <p>Helpers.cs</p> <pre><code>using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; namespace MyProject.Helpers { public enum Asset { Grid=1, FileUpload=2 } public static class Helper { public static void RequireAssets(this HtmlHelper helper, params Asset[] assets) { var alreadyRequired = helper.ViewData["RequiredAssets"] as List&lt;Asset&gt;; if (alreadyRequired == null) { alreadyRequired = new List&lt;Asset&gt;(); helper.ViewData.Add("RequiredAssets", alreadyRequired); } foreach (var asset in assets.Where(anAsset =&gt; !alreadyRequired.Contains(anAsset))) alreadyRequired.Add(asset); } // Used in the layout view public static MvcHtmlString RenderAssetStyles(this HtmlHelper helper) { var requiredAssets = helper.ViewData["RequiredAssets"] as List&lt;Asset&gt;; return requiredAssets == null ? null : MvcHtmlString.Create("Test Style"); } public static MvcHtmlString RenderAssetScripts(this HtmlHelper helper) { var requiredAssets = helper.ViewData["RequiredAssets"] as List&lt;Asset&gt;; return requiredAssets == null ? null : MvcHtmlString.Create("Test Script"); } } } </code></pre>
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    1. USMichael_B
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    1. COI would try breaking at the RequireAssets helper, and then each of the MvcHtmlStrings to check the order they are being called. The only 'reproduction' I could achieve was to have everything in one .cshtml in which case if you have the RequireAssets called after the RenderAssetStyles/RenderAssetScripts you won't have any assets set, before the calls that require them.
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      1. USMichael_B
    2. COIt seems I was rendering the view as partial, I've updated the question.
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    3. COhttp://stackoverflow.com/questions/4974027/modifying-mvc-3-viewbag-in-a-partial-view-does-not-persist-to-the-layout-cshtml may help
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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