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Kevin Ross
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MVC5 and Ignite 15.1 MVC Helpers Error - Attempt by security transparent method 'Infragistics.Web.Mvc.HtmlHelperExtensions.Infragistics
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I am received the following error after upgrading to ASP.NET MVC5 with Ignite 15.1. This happens using the grid, however I suspect it would happen with all MVC Helpers.

From other posts I can see there was a ticket open for this but it was over a year ago and my understanding is that this would have been fixed by now.

Key points:

System.Web.Mvc = Version 5.0.11001.0

Infragistics.Web.Mvc = Version=4.15.1.1005

Error:

Attempt by security transparent method 'Infragistics.Web.Mvc.HtmlHelperExtensions.Infragistics(System.Web.Mvc.HtmlHelper`1<!!0>)' to access security critical type 'System.Web.Mvc.HtmlHelper`1<TModel>' failed.

Assembly 'Infragistics.Web.Mvc, Version=4.15.1.1005, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb' is marked with the AllowPartiallyTrustedCallersAttribute, and uses the level 2 security transparency model. Level 2 transparency causes all methods in AllowPartiallyTrustedCallers assemblies to become security transparent by default, which may be the cause of this exception.

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  • 23953
    Suggested Answer
    Offline posted

    Hello Kevin,

    You're using Infragistics.Web.Mvc version compiled against MVC 4 (the first digit of the assembly version indicates the MVC version).

    You need to reference Infragistics.Web.Mvc.dll Version=5.15.1.1005 which should be located (by default) in:

    C:\Program Files (x86)\Infragistics\2015.1\Ignite UI\MVC\MVC5\Bin

    Hope this helps,
    Martin Pavlov
    Infragistics, Inc.

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