ASP.NET如何使用OWIN注册自定义视图引擎

Question

我正在尝试实现自定义视图引擎，这将允许我指定如下所示的其他视图路径：

public class CustomViewEngine : RazorViewEngine
{
    public CustomViewEngine()
    {
        ViewLocationFormats = new[]
        {
            "~/Views/{1}/{0}.cshtml", "~/Views/{1}/{0}.vbhtml",
            "~/Views/Shared/{0}.cshtml", "~/Views/Shared/{0}.vbhtml"
        };
        MasterLocationFormats = new[]
            {
            "~/Views/{1}/{0}.cshtml", "~/Views/{1}/{0}.vbhtml",
            "~/Views/Shared/{0}.cshtml", "~/Views/Shared/{0}.vbhtml"
        };
        PartialViewLocationFormats = new[]
            {
            "~/Views/{1}/{0}.cshtml", "~/Views/{1}/{0}.vbhtml",
            "~/Views/Shared/{0}.cshtml", "~/Views/Shared/{0}.vbhtml",
            "~/Views/Partials/Widgets/{0}.cshtml", "~/Views/Partials/Widgets/{0}.vbhtml"
        };

    }
}

例如，在Global.asax.cs中有很多源代码如何使用它：Can I specify a custom location to "search for views" in ASP.NET MVC?但是没有任何资料显示使用OWIN时如何注册此引擎。怎么做？

Answer 1

尝试一下：

Startup.cs

using System.Web.Mvc;
using Microsoft.Owin;
using Owin;

[assembly: OwinStartup(typeof(WebApplication2.Startup))]

namespace WebApplication2
{
   public class Startup
   {
      public void Configuration(IAppBuilder app)
      {
         ViewEngines.Engines.Clear();
         ViewEngines.Engines.Add(new CustomViewEngine());
      }
   }
}