Kindly let me know how to pass page range as arguement to silently print pdf file

var myProcessStartInfo = new ProcessStartInfo
{
    UseShellExecute = true,
    FileName = fname,
    Verb = "Print",
    CreateNoWindow = true,
    Arguments = DefaultPrinterName(), 
    WindowStyle = ProcessWindowStyle.Hidden

var myProcessStartInfo = new ProcessStartInfo
{
    UseShellExecute = true,
    FileName = fname,
    Verb = "Print",
    CreateNoWindow = true,
    Arguments = DefaultPrinterName(), 
    WindowStyle = ProcessWindowStyle.Hidden
};