asp.net mvc - Calls for files are made in the wrong file path -

hi trying build angular app , have following situation in asp.net mvc. have created app folder in root directory of project contains following:

• styles folder
• scripts folder
• images folder
• index.html file

then instead of returning view in homecontroller index action returned following:

 public actionresult index()  {       return file(server.mappath("/app/index.html"), "text/html");  } 

the index.html has following style added:

   <link rel="stylesheet" href="styles/main.css"> 

when run app index.html gets retrieved error inside of retrieving style file:

http://localhost:57826/styles/main.css  

for reason instead of looking in the following path http://localhost:57826/app/styles/main.css looks in path mentioned above.

i tryed intercept calls , files correct path creating custom router this:

routes.maproute(            name: "style",            url: "styles/{*path}",            defaults: new { controller = "www", action = "style" }        );  public class wwwcontroller : controller {     public actionresult style(string path)     {         byte[] content = this.getcontent(this.correctpath(path, "css"));         var result = new filecontentresult(content, this.getcontenttypefor(path));         return result;     }      private string correctpath(string path, string folder)     {         return server.mappath("/app/" + folder + "/" + path);     }      private byte[] getcontent(string path)     {         byte[] readallbytes = system.io.file.readallbytes(path);         return readallbytes;     }      private string getcontenttypefor(string path)     {         return system.web.mimemapping.getmimemapping(path.getfilename(path));     } } 

but solution not seem work.the style action not called.can tell me how can solve problem

why breaking mvc model not allowing view presentation work? this:

 public actionresult index() {    return view();  } 

then put whatever content need views/home/index.cshtml:

<link rel="stylesheet" href="styles/main.css"> @* add link tags, javascript, etc. *@ 

or use vanilla asp.net site.