MVC中对加载的视图类别优化

在Global.asax中添加下面这个函数，可以控制MVC只加载cshtml的视图

/// <summary>

        /// 保留razor视图引擎，其它的都去掉
        /// </summary>
        void PureViewEngines()
        {
            //System.Web.Razor.RazorCodeLanguage.Languages.Remove("vbhtml");

            //移除 集合中 默认添加的 WebFormViewEngine
            ViewEngines.Engines.RemoveAt(0);

            //ViewEngines.Engines.Clear();
            //ViewEngines.Engines.Add(new RazorViewEngine());

            RazorViewEngine razor = ViewEngines.Engines[0] as RazorViewEngine;

            //移除RazorViewEngine中的 vbhtml 路径模版。

            razor.FileExtensions = new string[] { "cshtml" };
            razor.AreaViewLocationFormats = new string[] { "~/Areas/{2}/Views/{1}/{0}.cshtml", "~/Areas/{2}/Views/Shared/{0}.cshtml" };
            razor.AreaMasterLocationFormats = new string[]{
                 "~/Areas/{2}/Views/{1}/{0}.cshtml",
                 "~/Areas/{2}/Views/Shared/{0}.cshtml"
            };

            razor.AreaPartialViewLocationFormats = new string[]{
                 "~/Areas/{2}/Views/{1}/{0}.cshtml",
                 "~/Areas/{2}/Views/Shared/{0}.cshtml"
            };

            razor.MasterLocationFormats = new string[]{
                 "~/Views/{1}/{0}.cshtml",
                 "~/Views/Shared/{0}.cshtml"
            };

            razor.PartialViewLocationFormats = new string[]{
                 "~/Views/{1}/{0}.cshtml",
                 "~/Views/Shared/{0}.cshtml"
            };

            razor.ViewLocationFormats = new string[]{
                 "~/Views/{1}/{0}.cshtml",
                 "~/Views/Shared/{0}.cshtml"
            };
        }