net481 
namespace System.Web.WebPages.Html
{
    public class HtmlHelper
    {
        public static string ValidationInputCssClassName { get; set; }
    }
}
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.NET Framework 4.54.5.14.5.24.64.6.14.6.24.74.7.14.7.24.84.8.1
Information specific to net481
Assembly

System.Web.WebPages , Version=3.0.0.0, PublicKeyToken=31bf3856ad364e35

Referencing

Your project needs a package reference to Microsoft.AspNet.WebPages.

Package Microsoft.AspNet.WebPages (3.3.0) net45
Platform Restrictions

This framework does not have platform annotations.

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  • Package-provided API