public PagingControls GetPagingControls(int totalNumberOfRecords
, PagingStrategy pagingStrategy)
{
var controls = new PagingControls
{
PagesCount = GetPagesCount(totalNumberOfRecords)
};
controls = GetPrevNext(controls, pagingStrategy);
return(controls);
}
private PagingControls GetPrevNext(PagingControls controls
, PagingStrategy pagingStrategy)
{
if (_pageNumber == 1) //first page state
{
if (_pageNumber == controls.PagesCount)
{
controls.NextPage = null;
}
else
{
controls.NextPage = _pageNumber + 1;
}
controls.PrevPage = null;
}
else if (_pageNumber == controls.PagesCount) //last page state
{
controls.NextPage = null;
controls.PrevPage = _pageNumber - 1;
}
else if (_pageNumber > controls.PagesCount)
{
if (pagingStrategy == PagingStrategy.ResetPagingToFirst)
{
_pageNumber = 1;
return(GetPrevNext(new PagingControls
{
PagesCount = controls.PagesCount
}, PagingStrategy.ReturnNull));
}
else
{
return(null);
}
}
else
{
controls.NextPage = _pageNumber + 1;
controls.PrevPage = _pageNumber - 1;
}
return(controls);
}