Acrobat PDF reader - Choose paper source by pdf page size

Thank you so much for your response, its highly appreciated. Whats happening is, i developed a vb.net application to print pdf files using adobe acrobat reader dc. However, if we forgot to put a check mark on what you are highlighting, we got unexpected print out. So what we did we make sure first to put a check mark first before printing. Is there a way that we can put a check mark automatically on Choose paper source by PDF page size from our vb.net application? Or any dll files that we can use to control this feature. Below provided is a vb.net code to print with adobe acrobat reader dc.

            Dim pathToExecutable As String = "AcroRd32.exe"

            Dim sReport = "C:\ProgramData\Docs\PDFprints\docs.pdf" 'Complete name/path of PDF file

            Dim SPrinter = Trim(SQL.dtTable.Rows(0).Item(0)) 'Name Of printer

            Dim starter As New ProcessStartInfo(pathToExecutable, "/t """ + sReport + """ """ + SPrinter + """")

            Dim Process As New Process()

            Process.StartInfo = starter

            Process.Start()                  

            Process.Kill()

            Process.Close()

This code means, even if Choose paper source by pdf page size is not enabled it will still send a print request.

Thank you so much.