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I want to add a Feature event receiver, that add a webpart to a page, I followed the steps in this link

But when I tried to deploy it , I hade the following error :

Error occurred in deployment step 'Activate Features': Assemblies that implement ASP.NET Web Parts and are installed into a partially trusted location, such as the bin directory, must be compiled with the AllowPartiallyTrustedCallersAttribute set for import to succeed.

How can I resolve this issue?

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  • try deploying through powershell once, and see if it also throws same error, probably it should not
    – Gaurravs
    Commented Sep 29, 2016 at 9:07
  • 1
    @Gaurravs , I found the FIX: Add the following to your AssemblyInfo.cs and recompile.usingSystem.Runtime.InteropServices;[assembly: AllowPartiallyTrustedCallers] . Thanks for you help ..
    – BKChedlia
    Commented Sep 29, 2016 at 9:09
  • good. you can put it as answer. so someone seeking same will be helped
    – Gaurravs
    Commented Sep 29, 2016 at 9:16
  • You will see Answer Your Question button below
    – Gaurravs
    Commented Sep 29, 2016 at 9:38

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FIX :

Add the following to your AssemblyInfo.cs and recompile.usingSystem.Runtime.InteropServices;[assembly: AllowPartiallyTrustedCallers] .

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