分页的集合获取总页数

发散性考虑 ，，，，，，，，，，，，，，呵呵，

1

public int TotalPageCount {
get { return (int) Math.Ceiling((double) TotalItemCount/PageSize); }
}

2 

public int TotalPageCount {
 get{

 if(TotalItemCount%PageSize==0)

 return TotalItemCount/PageSize;

}

else {

 return TotalItemCount/PageSize +1;//PageSize is must be intger ,sou result is intger ,and the final result must add 1;

}
}

public class PageOfItems<T> : List<T>, IPageOfItems<T> {
public PageOfItems(IEnumerable<T> items) {
AddRange(items);
}

#region IPageOfItems<T> Members

public int PageNumber { get; set; }
public int PageSize { get; set; }
public int TotalItemCount { get; set; }

public int TotalPageCount {
get { return (int) Math.Ceiling((double) TotalItemCount/PageSize); }
}
public int StartPosition {
get { return (PageNumber - 1)*PageSize + 1; }
}
public int EndPosition {
get { return PageNumber * PageSize > TotalItemCount ? TotalItemCount : PageNumber * PageSize; }
}

#endregion
}