public static PageObject PrevPageObject(this ChapterObject value, PageObject page_object)
{
Int32 index = value.IndexOfPageObject(page_object) - 1;
if (index < 0)
{
return(null);
}
return(value.Pages[index]);
}
public static PageObject NextPageObject(this ChapterObject value, PageObject page_object)
{
Int32 index = value.IndexOfPageObject(page_object) + 1;
if (index >= value.Pages.Count)
{
return(null);
}
return(value.Pages[index]);
}
