RenderSection with Default Content

RenderSectionWebPageBaseExtensions.cs

using System;
using System.Web.WebPages;

public static class WebPageBaseExtensions
{
    public static HelperResult RenderSection(this WebPageBase page, string sectionName, Func<dynamic, HelperResult> defaultContents)
    {
        if (page.IsSectionDefined(sectionName))
        {
            return page.RenderSection(sectionName);
        }
        else
        {
            return defaultContents(null);
        }
    }
}