public async Task <IActionResult> View(int id)
{
var slide = await repo.GetSlideAsync(id);
if (slide == null)
{
return(NotFound());
}
var prev = await repo.GetPrevSlideAsync(slide);
var next = await repo.GetNextSlideAsync(slide);
ViewData["Title"] = slide.Header;
var model = CreateSlideViewModelWithNavigation(slide, prev, next);
var template = String.IsNullOrWhiteSpace(model.Template) ? "Default" : model.Template;
return(Negotiate("../Slideshow/" + template, model));
}