Databases
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    <p>You should make sure that the view you are returning corresponds to a razor view. Here's a simplified working example:</p> <pre><code>public class CustomPathProvider : VirtualPathProvider { private class CustomVirtualFile : VirtualFile { public CustomVirtualFile(string path) : base(path) { } public override Stream Open() { return new MemoryStream(Encoding.UTF8.GetBytes("Hello @ViewBag.Name")); } } public override bool FileExists(string virtualPath) { // This is very important: make sure that here you // are returning true only for Razor view pages or // you won't have ViewBag. // In this oversimplified example we support // the index view for the home controller return virtualPath == "/Views/Home/Index.cshtml"; } public override VirtualFile GetFile(string virtualPath) { return new CustomVirtualFile(virtualPath); } } </code></pre> <p>which would be registered in <code>Application_Start</code>:</p> <pre><code>protected void Application_Start() { AreaRegistration.RegisterAllAreas(); RegisterGlobalFilters(GlobalFilters.Filters); RegisterRoutes(RouteTable.Routes); HostingEnvironment.RegisterVirtualPathProvider(new CustomPathProvider()); } </code></pre> <p>and finally a sample controller:</p> <pre><code>public class HomeController : Controller { public ActionResult Index() { ViewBag.Name = "John"; return View(); } } </code></pre> <p>And a final very important remark if you are implementing a custom <a href="http://msdn.microsoft.com/en-us/library/system.web.hosting.virtualpathprovider.aspx" rel="nofollow">VirtualPathProvider</a>:</p> <p>This doesn't work if your web application is precompiled. So if you are using precompilation (things like Publish... or Web Deployment Projects) your custom virtual path provider will never be used.</p>
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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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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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