CODEWITHSUNDEEP
asp.net-mvc-4
Eric J.
Eric J.

Reputation: 150108

(Not so) Ambiguous Call in MVC 4 Beta

Playing around with MVC 4 Beta and its Mobile features, the following line in Login.Mobile.cshtml

@Html.Partial("_ViewSwitcher")

Causes this compiler error:

The call is ambiguous between the following methods or properties: 'System.Web.Mvc.Html.PartialExtensions.Partial(System.Web.Mvc.HtmlHelper, string)' and 'System.Web.Mvc.Html.PartialExtensions.Partial(System.Web.Mvc.HtmlHelper, string)'

Per MSDN this is defined in System.Web.Mvc (in System.Web.Mvc.dll), to which I only seem to have a single reference.

The application runs correctly in spite of the compiler error.

There are no using statements in the view, though the following namespaces are incorporated via web.config:

    <add namespace="System.Web.Mvc" />
    <add namespace="System.Web.Mvc.Ajax" />
    <add namespace="System.Web.Mvc.Html" />
    <add namespace="System.Web.Routing" />

What's happening, and how can I get rid of the misleading compiler error?

Upvotes: 2

Views: 726

Answers (1)

Tom Mallard
Tom Mallard

Reputation: 74

The method is defined in two places is the usual cause for this, it can be from a referenced assembly of a previous build, the compiler will pick the most likely and use it so won't halt processing.

Upvotes: 1

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