Implementation of ASP.NET Web.Api IHttpActionResult that returns html rendered by Razor

HtmlActionResult

  public class HtmlActionResult<T> : IHttpActionResult
  {
    private readonly string _viewTemplate;
    private readonly T _model;

    public HtmlActionResult(string viewTemplateFullPath, T model)
    {
      _viewTemplate = File.ReadAllText(viewTemplateFullPath);
      _model = model;
    }

    public Task<HttpResponseMessage> ExecuteAsync(CancellationToken cancellationToken)
    {
      var response = new HttpResponseMessage(HttpStatusCode.OK);

      var parsedView = RazorEngine.Razor.Parse(_viewTemplate, _model);

      response.Content = new StringContent(parsedView);
      response.Content.Headers.ContentType = new MediaTypeHeaderValue("text/html");

      return Task.FromResult(response);
    }
  }