/// <param name="ticket"></param>
/// <param name="ticketXMLString">If you wish to read/write to the cache,
/// this must be set to the result of ticket.ToXmlString().
/// This an optional performance enhancement.</param>
private byte[] GetDevmode(PrintTicket ticket, String ticketXMLString)
{
Debug.Assert(ticket != null);
// The cached devmode is not modified by internal printing code
// and not exposed to client code so it is safe to pass the byte array
// by reference instead of making a copy
byte[] result = null;
if (ticketXMLString != null && m_printTicketCache.TryGetDevMode(ticketXMLString, out result))
{
}
// 10ms slowpath.
else
{
Toolbox.EmitEvent(EventTrace.Event.WClientDRXGetDevModeBegin);
(new PrintingPermission(PrintingPermissionLevel.DefaultPrinting)).Assert(); // BlessedAssert
try
{
result = ConvertPrintTicketToDevMode(ticket);
if (ticketXMLString != null)
{
m_printTicketCache.CacheDevMode(ticketXMLString, result);
}
}
finally
{
PrintingPermission.RevertAssert();
}
Toolbox.EmitEvent(EventTrace.Event.WClientDRXGetDevModeEnd);
}
return(result);
}