Blazor Developer

The following sections have been defined but have not been rendered for the layout page

Posted on February 17, 2016

You usually get this error when you have defined a section in your master layout which may be Layout.cshtml in default scenarios, but you have not included anything for that section in your Views (which are using this master Layout).

If your _Layout.cshtml has something like this:

@RenderSection("scripts")

Then all Views that use that Layout must include a @section with the same name (even if the contents of the section are empty):

@{
    ViewBag.Title = "Title";
    Layout = "~/Views/Shared/_Layout.cshtml";
}
@section scripts{
    // Add something here
}

As an alternative, you can set required to false, then you won’t be required to add the section in every View,

@RenderSection("scripts", required: false)

or also you can wrap the @RenderSection in an if block,

@if (IsSectionDefined("scripts"))
{
    RenderSection("scripts");
}

In above code, the IF statement will check if the SECTION is defined in child view.