public bool TryGetNext(
string url,
string pageParamName,
int currentPageNo,
int totalNoOfPages,
out PaginationItemModel paginationItemModel)
{
Throw.IfNullOrWhiteSpace(url, nameof(url));
Throw.IfNullOrWhiteSpace(pageParamName, nameof(pageParamName));
Throw.IfLessThan(1, currentPageNo, nameof(currentPageNo));
Throw.IfLessThan(1, totalNoOfPages, nameof(totalNoOfPages));
paginationItemModel = null;
if (currentPageNo >= totalNoOfPages)
{
return(false);
}
var pageNo = currentPageNo + 1;
var ariaLabel = $"Goto the next page, page {pageNo}";
var urlWithPageNo = GetUrlWithPageNo(url, pageParamName, pageNo);
paginationItemModel = new PaginationItemModel(
urlWithPageNo,
"Next",
ariaLabel);
return(true);
}
public bool TryGetPrevious(
string url,
string pageParamName,
int currentPageNo,
out PaginationItemModel paginationItemModel)
{
Throw.IfNullOrWhiteSpace(url, nameof(url));
Throw.IfNullOrWhiteSpace(pageParamName, nameof(pageParamName));
Throw.IfLessThan(1, currentPageNo, nameof(currentPageNo));
paginationItemModel = null;
if (currentPageNo == 1)
{
return(false);
}
var pageNo = currentPageNo - 1;
var ariaLabel = $"Goto the previous page, page {pageNo}";
var urlWithPageNo = GetUrlWithPageNo(url, pageParamName, pageNo);
paginationItemModel = new PaginationItemModel(
urlWithPageNo,
"Previous",
ariaLabel);
return(true);
}
public bool TryGetNext(
string url,
string pageParamName,
int currentPageNo,
int totalNoOfPages,
out PaginationItemModel paginationItemModel)
{
if (string.IsNullOrWhiteSpace(url))
{
throw new ArgumentNullException($"{nameof(url)} cannot be null or empty or whitespace.", nameof(url));
}
if (string.IsNullOrWhiteSpace(pageParamName))
{
throw new ArgumentNullException($"{nameof(pageParamName)} cannot be null or empty or whitespace.", nameof(pageParamName));
}
if (currentPageNo < 1)
{
throw new ArgumentOutOfRangeException(nameof(currentPageNo), $"{nameof(currentPageNo)} cannot be less than 1.");
}
if (totalNoOfPages < 1)
{
throw new ArgumentOutOfRangeException(nameof(totalNoOfPages), $"{nameof(totalNoOfPages)} cannot be less than 1.");
}
paginationItemModel = null;
if (currentPageNo >= totalNoOfPages)
{
return(false);
}
var pageNo = currentPageNo + 1;
var ariaLabel = $"Goto the next page, page {pageNo}";
var urlWithPageNo = GetUrlWithPageNo(url, pageParamName, pageNo);
paginationItemModel = new PaginationItemModel(
urlWithPageNo,
"Next",
ariaLabel);
return(true);
}
