Register RazorViewEngine only for C# (only for .cshtml files)

I am only using RazorViewEngine on one of my ASP.NET MVC 3 applications and I cleared Web Forms view engine out with following code inside Application_Start method of my Global.asax.cs file

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

I decided to see something solid so that I could be satisfied with this two-line-code-effort and I try to render a partial view which does not exist and I got this result :

The partial view '_ResortMapPartialView' was not found or no view engine supports the searched locations. The following locations were searched: ~/Areas开发者_Go百科/Accommodation/Views/resort/_ResortMapPartialView.cshtml ~/Areas/Accommodation/Views/resort/_ResortMapPartialView.vbhtml ~/Areas/Accommodation/Views/Shared/_ResortMapPartialView.cshtml ~/Areas/Accommodation/Views/Shared/_ResortMapPartialView.vbhtml ~/Views/resort/_ResortMapPartialView.cshtml ~/Views/resort/_ResortMapPartialView.vbhtml ~/Views/Shared/_ResortMapPartialView.cshtml ~/Views/Shared/_ResortMapPartialView.vbhtml

It looks a little better. Now it looks for less items than before. But still the files with .vbhtml extensions are making me unconformable.

The question is that : How can we get rid of them?

---

My suggestion would be to override the RazorViewEngine definitions for the following to only include cshtml files.

• AreaViewLocationFormats
• AreaMasterLocationFormats
• AreaPartialViewLocationFormats
• ViewLocationFormats
• MasterLocationFormats
• PartialViewLocationFormats
• FileExtensions

An brief example:

public class CSHtmlViewEngine: RazorViewEngine
{
    public CSHtmlViewEngine()
    {
        base.AreaViewLocationFormats=
            new string[]
                {
                    "~/Views/{1}/{0}.cshtml",
                    "~/Views/Shared/{0}.cshtml"
                };

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

   // All the other LocationFormats listed above will also need to be amended
   // Don't forget the FileExtensions array
   }

}

See my answer which talks about overriding these values. The same principle applies. You will need to register this modified ViewEngine (CSHtmlViewEngine) in the ApplicationStart method

ViewEngines.Engines.Clear();
ViewEngines.Engines.Add(new CSHtmlViewEngine());

---

Instead of subclassing the RazorViewEngine, or replacing it outright, you can just alter existing RazorViewEngine's PartialViewLocationFormats property. This code goes in Application_Start:

System.Web.Mvc.RazorViewEngine rve = (RazorViewEngine)ViewEngines.Engines
  .Where(e=>e.GetType()==typeof(RazorViewEngine))
  .FirstOrDefault();

string[] additionalPartialViewLocations = new[] { 
  "~/Views/[YourCustomPathHere]"
};

if(rve!=null)
{
  rve.PartialViewLocationFormats = rve.PartialViewLocationFormats
    .Union( additionalPartialViewLocations )
    .ToArray();
}