public void DeletePage(int pageNumber)
{
_file.DeletePage(pageNumber);
_pageSizes.RemoveAt(pageNumber);
}
/// <summary>
/// Delete the page from the PDF document.
/// </summary>
/// <param name="page">The page to delete.</param>
public void DeletePage(int page)
{
_file.DeletePage(page);
_pageSizes.RemoveAt(page);
PageSizes = new ReadOnlyCollection <SizeF>(_pageSizes);
}