In this post I will cover how to print a PDF document with Acrobat Reader X using Command Line Arguments in Visual Studio 2010.

Using C# - WPF

Common Declarations:

public string PrintPdf(string FilePath)
{
    //The name of the Printer we are going to use
    //This name is taken from App.Config for after deployment edit
    string printerName = ConfigurationManager.AppSettings["PrinterName"];
    //Path to Acrobat Reader X 
    //This path is taken from App.Config for after deployment edit
    String pathToExecutable = ConfigurationManager.AppSettings["AcrobatExePath"];
    //Now we pass the arguments For Printing to the ProcessStartInfo Constructor
    //We are using the Parameter /t <filename> <printername> <drivername> <portname> 
    //To Print the file the specified printer
    ProcessStartInfo myProcessStartInfo= new ProcessStartInfo(pathToExecutable, @"/t """ + FilePath     + @""" xps """+ printerName + @"""");
    //Open the process and set the StartInfo to myProcessStartInfo
    Process myProcess = new Process();
    myProcess.StartInfo = myProcessStartInfo;
    myProcess.StartInfo.UseShellExecute = false;
    myProcess.StartInfo.CreateNoWindow = true;
    myProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
    myProcess.Start();
    System.Threading.Thread.Sleep(2000);
}

Now if we want to use the Microsoft XPS Document Writer and don't want user interaction we should do the following: 

public string PrintPdf(string FilePath)
{
    //Set the Output File Path
    string outputFilePath = FilePath.Replace(".pdf", ".xps");
    //The name of the Printer we are going to use
    //This name is taken from App.Config for after deployment edit
    string printerName ="Microsoft XPS Document Writer";
    //Path to Acrobat Reader X 
    //This path is taken from App.Config for after deployment edit
    String pathToExecutable = ConfigurationManager.AppSettings["AcrobatExePath"];
    //Now we pass the arguments For Printing to the ProcessStartInfo Constructor
    //We are using the Parameter /t <filename> <printername> <drivername> <portname> 
    //To Print the file the specified printer
    ProcessStartInfo myProcessStartInfo= new ProcessStartInfo(pathToExecutable, @"/t """ + FilePath
    + @""" """ + printerName+ @""" /t """ + outputFilePath + @"""");
    //Open the process and set the StartInfo to myProcessStartInfo
    Process myProcess = new Process();
    myProcess.StartInfo = myProcessStartInfo;
    myProcess.StartInfo.UseShellExecute = false;
    myProcess.StartInfo.CreateNoWindow = true;
    myProcess.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
    myProcess.Start();
    System.Threading.Thread.Sleep(2000);
}

This Method will print an XPS document using Microsoft XPS Document Writer without user interaction at all.
 
I got some references from here:

http://stackoverflow.com/questions/619158/adobe-reader-command-line-reference

http://bytes.com/topic/c-sharp/answers/256956-printing-pdf-process-start-without-user-prompt