Where can I find System Web Helpers System Web WebPages and System Web Razor

Question

I am following this article on RazorGenerator and it say s that I must add references to    System Web Helpers dll System Web WebPages dll System Web Razor dll   The only one I can see when I do Add Reference is System Web Razor  but I don t know where the other ones are

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I had to install RazorGenerator Templating to get it all to work  From the NuGet console  type   Install-Package RazorGenerator Templating

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You will find these assemblies in the Extensions group under Assemblies in Visual Studio 2010  2012  amp  2013  Reference Manager

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When you install this nuget package Microsoft AspNet WebPages they can be find in C  Program Files  x86  Microsoft Visual Studio Shared Packages Microsoft AspNet WebPages x x x lib net45

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In VS 2010 just right click on project or on reference and click add reference  On the popup window Select Assemblies -   Extensions  -   System Web Helpers

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On VS2017 I installed the NuGet package  Microsoft AspNet WebPages  That did the trick

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This particular NuGet package has a habit of losing its references in one of our projects  From time to time I will need to run the following command in the Package Manager Console to restore the references and everything is OK again  Update-Package Microsoft AspNet Webpages -reinstall

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They should be under C  Program Files Microsoft ASP Net  or C  Program Files  x86  Microsoft ASP Net if you re on a 64-bit OS  in a subfolder for MVC3 or WebPages

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I had the same problem   first I couldn t find those dlls in the list of  NET components   but later I figured it out that the solution is    1- first I changed target framework from  NET framework 4 client profile to  NET framework 4   2- then scroll down the list of  NET components   pass first list of system web      scroll down   and find the second list of system web    at the bottom   they re there    I hope this could help others

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Installing ASP NET MVC3 from here should help

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As for VS2017 I didn t find it in  extensions   there s a Nuget package called  microsoft-web-helpers  that seems to be equivalent to System Web Helpers

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To sum up all of the options for VS 2017  WebHelpers was installed by installing MVC in previous versions of Visual Studio  If you re getting this error  you probably don t have the older versions of VS installed anymore   So  installing the Microsoft AspNet MVC NuGet package will require Microsoft AspNet WebPages and Microsoft AspNet Razor  and the Microsoft AspNet WebPages includes System Web Helpers dll   If you ve got direct references to System Web Mvc dll and you don t want to use NuGet for MVC  you can get the Microsoft AspNet WebPages NuGet  or there are some other NuGet packages that only contain System Web Helpers dll  like the microsoft-web-helpers or System-Web-Helpers dllpackages   There appear to be 2 versions of System Web Helpers dll  one for  Net 4 0 and one for 4 5  Choosing the correct version of MVC or AspNet WebPages will ensure you get the right one

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The issue is a missing or outdated version of MVC  I was running VS 2015Preview and could resolve the issue by installing the latest version of MVC via NuGet   Just in case anyone is still coming across this one

[c#] Where can I find System.Web.Helpers, System.Web.WebPages, and System.Web.Razor?

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