即使使用System.Web.Helpers，也缺少图表的参考

Question

I'm going a little bit nuts over here.. I'm just trying to make a simple chart, but I can't find the reference.

Everyone says to add "System.Web.Helpers", i even added another System.Web.Helpers 2.0 as a reference and I can't get Chart to find the reference.. under System.Web.Helpers. i only see:

• AntiForgery
• AntiForgeryConfig
• AntiXsrf Claims
• IantiForgeryAddtioonalDataProvider
• UnvalidatedRequestValues
• Validation

thanks for any help. i'm using asp.net mvc 4

Answer 1

I assume you are in Visual Studio at the moment so when investigating my local Object Browser, I see my System.Web.Helpers is referencing a Nuget Package - (Microsoft.AspNet.WebPages.3.2.2) which does include the Chart class. The project I am currently in appears to be Target Framework of 4.5, but Chart still appeared to be present when switching to version 4.