RDCL report to temp PDF then print

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guys i have RDCL report i want to convert this report to Temp PDF, then print this temp PDF 5 times , i am using the below code, it is view the report as PDF but when i print
appear like bytes and not clear , any help please ?

What I have tried:

 ReportViewer1.ProcessingMode = ProcessingMode.Local;
            ReportViewer1.LocalReport.ReportPath = "Doctor_form.rdlc";
            this.ReportViewer1.LocalReport.SetParameters(parameters);
            ReportViewer1.LocalReport.Refresh();
            Warning[] warnings;
            string[] streamIds;
            string mimeType = string.Empty;
            string encoding = string.Empty;
            string extension = string.Empty;

            byte[] bytes = ReportViewer1.LocalReport.Render("PDF", null, out mimeType, out encoding, out extension, out streamIds, out warnings);
Response.Buffer = true;
            Response.Clear();
            Response.ContentType = mimeType;
            Response.BinaryWrite(bytes);
            Response.Flush();

Posted 27-Nov-18 2:51am

loai_maane

Updated 27-Nov-18 5:08am

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Dave Kreskowiak · Answer 1 · 2018-11-27T05:09:00

Solution 1

It's coming up bytes in the browser because you're not telling the browser what type of content it's getting. You're setting the ContentType to an empty string instead of "application/pdf".

Posted 27-Nov-18 5:09am

Dave Kreskowiak

Comments

Richard Deeming 27-Nov-18 11:17am

The Render[^] method should set that to the correct value.

loai_maane 27-Nov-18 11:27am

thanks guys , but dear Dave as Richard told render will set the value . any options guys please ?

Dave Kreskowiak 27-Nov-18 11:39am

Yeah, but the behavior you're describing suggests it's not being set.

Step through the code in the debugger and execute it line by line.

loai_maane 27-Nov-18 11:49am

thanks Dave I will try , but how can I print the temp PDF and I want to print it 5 copies

Richard Deeming 27-Nov-18 14:24pm

You can't. Neither the code running on the server, nor Javascript running on the client, can force the user to print a file, let alone control how many copies are printed.

Imagine what would happen if that were possible. Every prank or malicious site you visited would start printing out hundreds of copies of useless junk that you didn't want to print. Even printer manufacturer's sites would probably start printing out page after page of solid colour to drain your ink and force you to buy more.

All you can do is send the file to the user. They can then choose whether to save it for later; whether to print it out; and how many copies to print.

Dave Kreskowiak 27-Nov-18 14:25pm

That depends. Is the printer attached to the web server or to the client?

loai_maane 27-Nov-18 16:13pm

guys actually, it is program to print medical form include 5 copies for each form ,the end user enter some data like employee id, doctor code ..... then press on print button 5 copies of the form will printed using printer connected to client PC .

Dave Kreskowiak 27-Nov-18 16:47pm

You've got a problem. Your ASP.NET runs entirely on the server and, hence, will not have ANY access to the clients peripherals, like printers.

Likewise, javascript code running in the browser runs in a secured sandbox, and also doesn't have access to the peripherals either, so it can't kick off the print process without the user doing it.

There is a rather complex alternative however. A normal application does have access to the printers. You're have to write another application that is installed on the client machines. This application can be told to download a PDF from such and such URL, like you're ASP.NET site, and print it.

OK, but how to do get the javascript code to tell this app to download the correct PDF? Well, javscript can only talk to web servers. There's nothing that says it can't talk to a webserver that's running on the client machine. So, your printing app would also have to expose web server functionality so your client javascript code can talk to it and tell it what to do.

loai_maane 28-Nov-18 0:09am

thanks a lot dear Dave for your replay ,
so i think it is better to forget .net and do the job using win application . what is your opinion ?
and dear last question , how can i print the Temp PDF after rendering process.

Dave Kreskowiak 28-Nov-18 8:04am

Just to be clear, this has nothing to do with .NET at all. It's the difference between a web application and desktop application.

Printing a PDF is going to be the function of the PDF library you're using to render the thing on screen. Printing is just rendering the document to a different device context with different height and width dimensions.

For a browser to render a PDF, it has to use either a plugin, like Acrobat Reader, or it should have the code built in to interpret and render the PDF. Microsoft's Edge browser has this capability.

For a desktop app to render a PDF, it has to use a library to interpret the PDF data and draw the thing on screen or on a printer. There's at least a dozen libraries out there, like SharpPDF, IronPDF, iTextSharp, ... You can even use Acrobat Reader as your library.

loai_maane 28-Nov-18 10:26am

thanks a lot dave for your information

loai_maane 3-Dec-18 12:25pm

dear Dave i hope you are fine.....
i create desktop app to save the report as pdf on hard drive ,and i printed successfully, but when i print, adobe reader pop up. i try a lot of method like killing the process still same issue, please help , i want to print the pdf with out pop up the adobe reader.i will but my code as new comment kindly check

loai_maane 3-Dec-18 12:26pm

string Filepath = Path.Combine(exeFolder, @"Form.pdf");

ProcessStartInfo printProcessInfo = new ProcessStartInfo()
{
Verb = "print",
WindowStyle = ProcessWindowStyle.Hidden,
CreateNoWindow = true,
FileName = Filepath,
UseShellExecute = true

};

Process printPro = new Process();
printPro.StartInfo = printProcessInfo;
printPro.Start();
printPro.WaitForInputIdle();
Thread.Sleep(6000);
if (false == printPro.CloseMainWindow())
{
printPro.Kill();
}

Dave Kreskowiak 3-Dec-18 12:29pm

You have no control over Acrobat Reader when printing. If it wants to put up a dialog verifying the printer and settings, it'll show that dialog and you can't stop it.

loai_maane 4-Dec-18 0:17am

thank you Dave, any other option to print the PDF with out pop up acrobat reader ?

Dave Kreskowiak 4-Dec-18 8:22am

As always, 3rd party libraries. You're going to have to investigate this yourself to see what's going to fit your needs.

loai_maane 4-Dec-18 8:44am

thanks Dave ,i will check