C# PDF Writing: Is there an API that uses the GDI+ naming conversion that creates PDFs?

I have several GDI+ functions/progr开发者_StackOverflowams that are capable of producing vector graphics. Is there an API that uses the GDI+ naming conversion that creates PDFs. So instead of creating a bitmap/canvas (I forget which one) and calling DrawRectangle, I could create a PDF_Canvas or something and call the PDF DrawRectangle?

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use

using iTextSharp;

using iTextSharp.text;
using iTextSharp.text.pdf;