Grid PageSizes TagHelper attribute does not expose an IEnumerable overload
The Grid PageSizes TagHelper attribute exposes only an int[]
overload which prevents adding options such as "All".
In comparison to its HtmlHelper counterpart:
.Pageable(paging => paging.PageSizes(new object [] { 5, 10, 20, "All" }))
It would be a good idea to consider altering the page sizes to accept an IEnumerable overload.