public BlogPaginationViewModel(int pageNumber,
int pageSize,
int totalCount,
bool showLastPage,
int lengthOfPager = 5,
string queryStringParam = "page",
string activeClass = "active",
string disabledClass = "disabled",
string nextLabel = "Next",
string prevLabel = "Previous"
)
{
Page = pageNumber;
PageSize = pageSize;
TotalCount = totalCount;
NumberOfPages = (int)Math.Ceiling((double)TotalCount / PageSize);
LengthOfPager = lengthOfPager;
QueryStringParam = queryStringParam;
ActiveClass = activeClass;
DisabledClass = disabledClass;
NextLabel = nextLabel;
PreviousLabel = prevLabel;
ShowLastPage = showLastPage;
//set start and end range indexes
double result = (double)Page / LengthOfPager;
StartRangeIndex = (int)(Math.Floor(result) * LengthOfPager);
if (Page % LengthOfPager == LengthOfPager)
{
StartRangeIndex = StartRangeIndex + LengthOfPager;
}
if (StartRangeIndex == 0)
{
StartRangeIndex = 1;
}
EndRangeIndex = StartRangeIndex + (LengthOfPager - 1);
//set rel/prev for seo
string relPrev = "";
if (Page > 1)
{
relPrev = string.Format("<link rel=\"prev\" href=\"{0}\" />", BlogUtils.GetPagedUrl(QueryStringParam, Page - 1, true));
}
if (Page != NumberOfPages && NumberOfPages != 0)
{
if (relPrev.Length > 0)
{
relPrev += Environment.NewLine;
}
relPrev += string.Format("<link rel=\"next\" href=\"{0}\" />", BlogUtils.GetPagedUrl(QueryStringParam, Page + 1, true));
}
AgilityContext.Page.MetaTagsRaw += relPrev;
}