iTextSharp: How to add Binary image (Byte array or Base64 string) to PDF document using C# in ASP.Net

Hello, i am using your tutorial Create PDF Report from database in ASP.Net using C# and VB.Net (very good for newbie)

i am failing to get the Base64 string and show it as an image in the output pdf file.

I have a signautre canvas that saves the output directly into the sql database.