public static string SimpleReader(string filePath)
{
PdfDocument pdf = PdfReader.Open(filePath);
StringBuilder sb = new StringBuilder();
foreach (var page in pdf.Pages)
{
PdfString s = new PdfString(page.Contents.ToString(), PdfStringEncoding.PDFDocEncoding);
sb.Append(s.ToStringFromPdfDocEncoded());
}
return(sb.ToString());
}