Printing with Silverlight and com-interop

Question

I'm trying to print from silverlight without a print dialog and for that I'm using System.Runtime.InteropServices.Automation;

Right now I'm creating a temporary txt file that contain the text to send to printer.

using (dynamic fso = AutomationFactory.CreateObject(@"Scripting.FileSystemObject"))
{
   dynamic file = fso.CreateTextFile(cFileName, true);
   file.Write(printText);
   file.Close();
}

After that I'm using shell.Aplication to print that document.

 dynamic shell = AutomationFactory.CreateObject("Shell.Application");
 shell.ShellExecute(cFileName, "", "", "print", 1);

The question is, how can a print directly to printer without a temporary txt file?

Don't forget that I'm using Silverlight 4 out of browser and with elevated trust.

You can't. No process is powerful enough to reach inside your process, knows its way around and obtain the string. Don't sweat the small stuff, a file is not a problem. — Hans Passant, Aug 08 '11 at 19:18
@Hans Passant, isn't possible to print directly without using notepad? Besides using a temporary text file wich are the possible solutions to print the screen content? — Diogo Cardoso, Aug 22 '11 at 15:26

score 0 · Answer 1 · edited May 23 '17 at 12:26

0

You should be able to start notepad and send your content although this is no fun solution:

Read: Silverlight 4 - send text to Notepad and: http://msdn.microsoft.com/en-us/library/8c6yea83(v=vs.85).aspx

So basicly, 1. you start an instance of notepad. 2. Wait some time. 3. Send your text to notepad 4. Send {PRTSC} for printing 5. Ofcourse, close the instance ;)

Good luck!

edited May 23 '17 at 12:26

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answered Aug 22 '11 at 08:57

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Isn't possible to print directly without using notepad? Besides using a temporary text file wich are the possible solutions to print the screen content? – Diogo Cardoso Aug 22 '11 at 15:16

Printing with Silverlight and com-interop

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