oliverbooth.dev/OliverBooth/Pages/Shared/Partials/_PageTabs.cshtml

@{
    var urlRoot = ViewData["UrlRoot"]?.ToString() ?? string.Empty;
    var page = (int)(ViewData["Page"] ?? 1);
    var pageCount = (int)(ViewData["PageCount"] ?? 1);

    var utility = new PageTabsUtility
    {
        CurrentPage = page,
        PageCount = pageCount,
        UrlRoot = urlRoot,
        Tags = ViewData["Tags"] as string[]
    };
}
<nav>
    <ul class="pagination justify-content-center">
        @if (pageCount == 1)
        {
            @Html.Raw(utility.ShowTab(1)) @* always visible *@
        }
        else
        {
            @Html.Raw(utility.ShowBounds(PageTabsUtility.BoundsType.Lower))
            @Html.Raw(utility.ShowTab(1)) @* always visible *@
            @Html.Raw(utility.ShowTabWindow())
            @Html.Raw(utility.ShowTab(pageCount)) @* always visible *@
            @Html.Raw(utility.ShowBounds(PageTabsUtility.BoundsType.Upper))
        }
    </ul>
</nav>