public override void Process(TagHelperContext context, TagHelperOutput output)
{
if (!Url.EndsWith("/"))
{
Url += "/";
}
string queryes = "";
StringBuilder builder = new StringBuilder();
if (QueryStrings != null && QueryStrings.Count > 0)
{
builder.Append("?");
foreach (var item in QueryStrings)
{
builder.Append($"{item.Key}={item.Value}&");
}
builder.Remove(builder.Length - 1, 1);
queryes = builder.ToString();
}
builder.Clear();
builder.Append("<nav aria-label=\"gallery pagination\">");
builder.Append("<ul class=\"pagination justify-content-center\">");
builder.Append($"<li id=\"prevPage\" class=\"page-item {(Pictures.HasPreviousPage ? "" : "disabled")}\">");
builder.Append($"<a class=\"page-link\" href=\"{Url}{Pictures.PageIndex - 1}{queryes}\" aria-label=\"Previous\">");
builder.Append("<span aria-hidden=\"true\">«</span><span class=\"sr-only\">Previous</span></a></li>");
foreach (var index in Pictures.GetRoutePages())
{
builder.Append($"<li class=\"page-item {(Pictures.PageIndex == index ? "active" : "")}\"><a class=\"page-link\" href=\"{Url}{index}{queryes}\">{index}</a></li>");
}
builder.Append($"<li id=\"nexPage\" class=\"page-item {(Pictures.HasNextPage ? "" : "disabled")}\">");
builder.Append($"<a class=\"page-link\" href=\"{Url}{Pictures.PageIndex + 1}{queryes}\" aria-label=\"Next\">");
builder.Append("<span aria-hidden=\"true\">»</span>");
builder.Append("<span class=\"sr-only\">Next</span>");
builder.Append("</a></li></ul></nav>");
output.TagName = "section";
output.Attributes.SetAttribute("id", "pagination");
output.Content.SetHtmlContent(builder.ToString());
output.TagMode = TagMode.StartTagAndEndTag;
}