RenderSection defined but not rendered

Question

I'm trying to have the navigation bars for my website to be a little dynamic. If a categoryId is equals to 0 I remove some buttons, else I display them all:

_Layout.cshtml:

<body>
    <div class="page">
        <div id="header">
            <div id="logindisplay">
                @Html.Partial("_LogOnPartial")
            </div>     
            <div id="menucontainer">
                @if (IsSectionDefined("Navigation"))
                {
                    {RenderSection("Navigation", false);}
                }
                else
                {
                    <p>No navigation setup!</p>
                }
            </div>
        </div>
        <div id="main">
            <div id="contentwrapper">
                @RenderBody()
            </div>
            <div id="footer">
            </div>
        </div>
    </div>
</body>

Index.cshtml: from my HomeController

@model Project2.ViewModels.ProjectCategoryListViewModel

@{
    ViewBag.Title = "Home Page";
}

@section Navigation {
    @{Html.RenderAction("LayoutNav", "Home", new { CategoryId = 0 });}
}

<!-- Rest of the page's code -->

Index.cshtml: from my CategoryController

@model Project2.ViewModels.Categories.CategoryIndexViewModel

@{
    ViewBag.Title = "Category Index";
}

@section Navigation {
    @{Html.RenderAction("LayoutNav", "Home", new { CategoryId = Model.Category.Id });} 
}

<!-- Rest of the page's code -->

I tried the exact same setup but without RenderAction and just entering html directly but I keep getting this error message:

The following sections have been defined but have not been rendered for the layout page "~/Views/Shared/_Layout.cshtml": "Navigation".

The Index actions in the Category and Home controller are straight forward ActionResults that return a View.

Any ideas what's going on there?

Pietro Gobbato · Accepted Answer · 2011-07-12 19:55:22Z

4

Syntax error with your RenderSection. Give this a try:

@if (IsSectionDefined("Navigation"))
{
    @RenderSection("Navigation", false)
}
else
{
    <p>No navigation setup!</p>
}

answered Jul 12, 2011 at 19:55

Pietro Gobbato

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Comments

Haacked · Accepted Answer · 2011-07-12 20:28:40Z

2

I wrote a blog post with a helper method for specifying default content in a RenderSection call: http://haacked.com/archive/2011/03/05/defining-default-content-for-a-razor-layout-section.aspx

It would let you do the following:

@RenderSection("Navigation", @<p>No navigation setup!</p>)

answered Jul 12, 2011 at 20:28

Haacked

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1 Comment

LanFeusT Over a year ago

Oh that's a neat one! Thanks :)

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