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Asked: 2026-05-25T03:22:11+00:00

I’m trying to call a custom HtmlHelper’s extension method from a partial view <%:

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I’m trying to call a custom HtmlHelper’s extension method from a partial view

<%: Html.ToRelativeTime(Model.CreatedDate) %>

and I get this error:

CS1061: ...does not contain a definition for 'ToRelativeTime' and no extension method 'ToRelativeTime' accepting a first argument of type 'System.Web.Mvc.HtmlHelper...could be found (are you missing a using directive or an assembly reference?)

and I’m calling the render code as this:

<% Html.RenderPartial("Product", Model.Product); %>

P.S: When I type Html., there is no intellesince.

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1 Answer

  1. Editorial Team

    Try to add namespace reference of your extension to the partial view where you trying to use your custom extension

    <%@ import namespace='your namespace' %>

    also here you may find a useful information

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