public IQueryable <T> PagerSearch <T>(PagerDescriptor pagerDesc, IQueryable <T> results, int recordCount)
{
int page1 = (int)Math.Ceiling((recordCount + 0.0) / pagerDesc.SelectedPageSize);
if (pagerDesc.SelectedPage > page1)
{
pagerDesc.SelectedPage = page1;
}
pagerDesc.TotalRecordCount = recordCount;
pagerDesc.TotalPageCount = page1;
if (pagerDesc.SelectedPage > pagerDesc.TotalPageCount)
{
pagerDesc.SelectedPage = pagerDesc.TotalPageCount;
}
return(results.Skip((pagerDesc.SelectedPage - 1) * pagerDesc.SelectedPageSize).Take(pagerDesc.SelectedPageSize));
}
/// <summary>
/// Generates html for given pager descriptor taking into account style rules used for SKF's sites.
/// </summary>
/// <param name="helper">The helper</param>
/// <param name="descriptor">The descriptor for the pager</param>
/// <returns>Generated IHtmlString for SKF pager</returns>
public static IHtmlString KTMPager(this HtmlHelper helper, PagerDescriptor descriptor)
{
StringBuilder sb = new StringBuilder();
sb.Append("<div class=\"pager\">");
//sb.Append("<div class=\"page-size\">");
//sb.Append("<span class=\"text\">").Append(descriptor.PageSizeDescription).Append("</span>");
//for (int i = 0; i < descriptor.AllowedPageSizes.Count; i++) {
// if (descriptor.AllowedPageSizes[i] == descriptor.SelectedPageSize) {
// sb.Append("<span class=\"link-active\">").Append(descriptor.AllowedPageSizes[i]).Append("</span>");
// } else {
// sb.Append("<a class=\"link\">").Append(descriptor.AllowedPageSizes[i]).Append("</a>");
// }
//}
//sb.Append("</div>");
sb.Append("<div class=\"pages\">");
int startPage = 0;
int endPage = 0;
bool generatePreviousPageSet = true;
bool generateNextPageSet = true;
if (descriptor.TotalRecordCount > 0)
{
// generate 'Previous page' link
// ...
if (descriptor.SelectedPage > 1)
{
sb.Append("<a class=\"previous\" page=\"" + (descriptor.SelectedPage - 1) + "\"></a>");
}
// calculate page links
if ((int)Math.Ceiling((descriptor.SelectedPage + 0.0) / descriptor.VisiblePageCount) == 1)
{
// the selected page is in the first set of pages
generatePreviousPageSet = false;
startPage = 1;
if (descriptor.TotalPageCount < descriptor.VisiblePageCount)
{
endPage = descriptor.TotalPageCount;
}
else
{
endPage = descriptor.VisiblePageCount;
}
if (descriptor.VisiblePageCount >= descriptor.TotalPageCount)
{
generateNextPageSet = false;
}
}
else if ((int)Math.Ceiling((descriptor.SelectedPage + 0.0) / descriptor.VisiblePageCount) == (int)(Math.Ceiling((descriptor.TotalPageCount + 0.0) / descriptor.VisiblePageCount)))
{
// the selected page is in the last set of pages
startPage = (int)Math.Floor((descriptor.SelectedPage + 0.0) / descriptor.VisiblePageCount) * descriptor.VisiblePageCount + 1;
endPage = descriptor.TotalPageCount;
if (startPage > endPage)
{
startPage -= descriptor.VisiblePageCount;
}
generateNextPageSet = false;
}
else
{
// the selected page is in middle set of pages
startPage = (int)Math.Floor((descriptor.SelectedPage + 0.0) / descriptor.VisiblePageCount) * descriptor.VisiblePageCount + 1;
endPage = (int)Math.Ceiling((descriptor.SelectedPage + 0.0) / descriptor.VisiblePageCount) * descriptor.VisiblePageCount;
if (startPage > endPage)
{
startPage -= descriptor.VisiblePageCount;
}
}
// generate first page link, generate previous page set link: ( < | 1 | ... | 20 | 21 | 22)
if (generatePreviousPageSet)
{
if (descriptor.SelectedPage % descriptor.VisiblePageCount != 0)
{
sb.Append("<a class=\"link\">1</a><a class=\"link pageset\" page=\"" + (int)(Math.Floor((descriptor.SelectedPage + 0.0) / descriptor.VisiblePageCount) * descriptor.VisiblePageCount) + "\">...</a>");
}
else
{
sb.Append("<a class=\"link\">1</a><a class=\"link pageset\" page=\"" + (int)(Math.Floor((descriptor.SelectedPage - 1.0) / descriptor.VisiblePageCount) * descriptor.VisiblePageCount) + "\">...</a>");
}
}
// generate page links
GeneratePageLinks(startPage, endPage, sb, descriptor);
// generate next page set link, generate last page link: ( 27 | 28 | 29 | ... | 183 | > )
if (generateNextPageSet)
{
sb.Append("<a class=\"link pageset\" page=\"" + (int)(Math.Ceiling((descriptor.SelectedPage + 0.0) / descriptor.VisiblePageCount) * descriptor.VisiblePageCount + 1) + "\">...</a><a class=\"link-last\">" + descriptor.TotalPageCount + "</a>");
}
// generate 'Next page' link
if (descriptor.SelectedPage < descriptor.TotalPageCount)
{
sb.Append("<a class=\"next\" page=\"" + (descriptor.SelectedPage + 1) + "\"></a>");
}
}
sb.Append("</div>");
sb.Append("</div>");
return(MvcHtmlString.Create(sb.ToString()));
}
private static void GeneratePageLinks(int startPage, int endPage, StringBuilder sb, PagerDescriptor descriptor)
{
if (startPage <= 0)
{
return;
}
for (int i = startPage; i <= endPage; i++)
{
if (i == descriptor.SelectedPage)
{
if (i == 1)
{
sb.Append("<span class=\"link-active-first\">").Append(i).Append("</span>");
}
else
{
sb.Append("<span class=\"link-active\">").Append(i).Append("</span>");
}
}
else
{
sb.Append("<a class=\"link\">").Append(i).Append("</a>");
}
}
}
