private Document RemoveExistingWatermarks(Document pdfDocument)
{
PdfContentEditor ped = new PdfContentEditor(pdfDocument);
for (int i = 1; i <= pdfDocument.Pages.Count; i++)
{
double pHeight = pdfDocument.Pages[i].Rect.Height;
double pWidth = pdfDocument.Pages[i].Rect.Width;
StampInfo[] vstamp = ped.GetStamps(i);
List <int> ltToDelete = new List <int>();
for (int j = 0; j < vstamp.Length; j++)
{
if (StampType.Form == vstamp[j].StampType)
{
if ((vstamp[j].Rectangle.Height * 100) / pHeight >= 30 || (vstamp[j].Rectangle.Width * 100) / pWidth >= 30)
{
ltToDelete.Add(j);
}
}
}
int[] vToDelete = new int[ltToDelete.Count];
for (int j = 0; j < ltToDelete.Count; j++)
{
vToDelete[j] = ltToDelete[j];
}
ped.DeleteStamp(i, vToDelete);
}
MemoryStream outStream = new MemoryStream();
ped.Save(outStream);
Document pdfDocumentNoStamps = new Document(outStream);
return(pdfDocumentNoStamps);
}