Using html helpers in Razor web helper

Question

I am trying to create a Razor web helper something like this :

@helper DisplayForm() {    
    @Html.EditorForModel();    
}

But this gives the error "CS0103: The name 'Html' does not exist in the current context".

Is there any way to reference html helpers within web helpers?

GvS · Accepted Answer · 2010-12-01 15:13:56Z

23

You can cast the static Page property from the context to the correct type:

@helper MyHelper() {
    var Html = ((System.Web.Mvc.WebViewPage)WebPageContext.Current.Page).Html;

    Html.RenderPartial("WhatEver");
    @Html.EditorForModel();
}

edited Dec 1, 2010 at 15:13

answered Nov 25, 2010 at 14:31

GvS

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2 Comments

Kirk Woll Over a year ago

Thanks, worked for me. Now can anyone answer the question of why the System.Web.WebPages.Html.HtmlHelper version exists at all?

pinus.acer Over a year ago

You can always add this at the top of your file:

@functions {     public static System.Web.Mvc.HtmlHelper<object> Html = ((System.Web.Mvc.WebViewPage)WebPageContext.Current.Page).Html; }

Given that you can use @Html as everywhere else.

Darin Dimitrov · Accepted Answer · 2010-10-27 16:08:33Z

4

Declarative helpers in Razor are static methods. You could pass the Html helper as argument:

@helper DisplayForm(HtmlHelper html) {
    @html.EditorForModel(); 
}

@DisplayForm(Html)

answered Oct 27, 2010 at 16:08

Darin Dimitrov

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2 Comments

Craig Over a year ago

When I try this I get the error "CS1061: 'System.Web.WebPages.Html.HtmlHelper' does not contain a definition for 'EditorForModel' and no extension method 'EditorForModel' accepting a first argument of type 'System.Web.WebPages.Html.HtmlHelper' could be found (are you missing a using directive or an assembly reference?)"

Darin Dimitrov Over a year ago

That's because your view needs to be strongly typed: @model MyNs.Models.FooViewModel.

takepara · Accepted Answer · 2010-10-27 16:03:42Z

1

Razor inline WebHelper is generate static method.

So can not access instance member.

@helper DisplayForm(HtmlHelper html){
    @html.DisplayForModel()
}

How about this?

answered Oct 27, 2010 at 16:03

takepara

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