Printing using Adobe Reader not working

Question

I am using .NET to open .pdf file with "Print" option. This should print that .pdf file on default printer of the system. But in reality, when I run my program, it opens blank Adobe Reader window and just hangs there, no page gets printed. My C# code looks like following:
Process process1 = new Process();
process1.StartInfo.UseShellExecute = true;
process1.StartInfo.Verb = "Print";
process1.StartInfo.WindowStyle = ProcessWindowStyle.Normal;
process1.StartInfo.FileName = completeFileName;
process1.Start();
Above code could also be written in vbScript.
Can anyone let me know why Acrobat Reader does not print any page?
Thank you in advance.

Answer 1

The paper trays are both 8" x 11". The top tray has checks, the bottom tray has plain paper. When I go to print, the print dialog defaults to the last saved setting which is supposed to use the lower tray, however when checking the setting it says upper tray. I have to switch to either another setting or to the Standard setting, then back to my saved setting in order for the paper tray to be set correctly on the lower tray. I would expect that whatever setting the saved setting has, it would change to the necessary settings and use it instead of using a default settings. I don't know if this is a bug in the OS X or the HP driver.
For example. I go to print in Safari, the printer says OfficeJet 7140xi, the Preset setting says OfficeJet (Lower Tray). When I check Paper Type/Quality, the paper tray is set to Upper Tray. I switch the Preset to Standard and back to OfficeJet (Lower Tray) and check the Paper Type/Quality and now the paper tray is set to Lower Tray. So, initially, when the print dialog comes up, it ignores the Preset settings and defaults to some other settings and manually you have to switch the Preset to another setting and back again in order to get the correct settings.