public IActionResult OnPostCreate(string name)
{
string path = Path.Combine(_environment.WebRootPath, "albums", name);
Directory.CreateDirectory(path);
var album = new Album(path, _ac);
_ac.Albums.Insert(0, album);
_ac.Sort();
return(new RedirectResult($"~/album/{WebUtility.UrlEncode(name).Replace('+', ' ')}/"));
}