Question

In my asp.net MVC 3 application, I have nested layouts. I have followed following link:

http://blogs.msdn.com/b/marcinon/archive/2010/12/15/razor-nested-layouts-and-redefined-sections.aspx

My main layout page is_MasterLayout.cshtml and then a nested layout page _fullLayout.cshtml. In _fullLayout.cshtml, I have:

@this.RedefineSection("BodyTitle")
@this.RedefineSection("Showcase")

but I am getting on these lines. Error is:

Compilation Error

Description: An error occurred during the compilation of a resource required to service this request. Please review the following specific error details and modify your source code appropriately.

Compiler Error Message: CS1928: ‘ASP._Page_Views_Shared__fullLayout_cshtml’ does not contain a definition for ‘RedefineSection’ and the best extension method overload ‘SectionExtensions.RedefineSection(System.Web.WebPages.WebPageBase, string)’ has some invalid arguments

Source Error:

Line 9:
Line 10: }
Line 11: @this.RedefineSection(“BodyTitle”)
Line 12: @this.RedefineSection(“Showcase”)
Line 13: @RenderBody()

my helper methods are defined like this:

public static class SectionExtensions
{

    private static readonly object _o = new object();

    public static HelperResult RenderSection(this WebPageBase page, string sectionName, Func<object, HelperResult> defaultContent)
    {
        if (page.IsSectionDefined(sectionName))
            return page.RenderSection(sectionName);
        else
            return defaultContent(_o);
    }

    public static HelperResult RedefineSection(this WebPageBase page, string sectionName)
    {
        return RedefineSection(page, sectionName, defaultContent: null);
    }

    public static HelperResult RedefineSection(this WebPageBase page, string sectionName, Func<object, HelperResult> defaultContent)
    {
        if (page.IsSectionDefined(sectionName))
            page.DefineSection(sectionName, () => page.Write(page.RenderSection(sectionName)));
        else if (defaultContent != null)
            page.DefineSection(sectionName, () => page.Write(defaultContent(_o)));
        return new HelperResult(_ => { });
    }

}

Please suggest solution.

Regards,
Asif Hameed

Answer 1

RedefineSection helper contains two or more argument

RedefineSection(this WebPageBase page, string sectionName)

but you are passing only one in your view

@this.RedefineSection("BodyTitle")
@this.RedefineSection("Showcase")

According to

http://blogs.msdn.com/b/marcinon/archive/2010/12/15/razor-nested-layouts-and-redefined-sections.aspx

you have to put something

@this.RedefineSection("TitleSection",
                  @<h1>Default SubLayout title</h1>)