Re: print to network printer using ASP.NET on IIS6 (2003 Server)

From: Guest (Guest_at_aew_nospam.com)
Date: 04/29/05 

Date: Fri, 29 Apr 2005 07:28:47 -0700

I am having the same problem. Did you ever figure out what was the problem?

Thanks,
Jorge

> Is there any security reason why you cannot print to a network printer from
> ASP.NET under IIS6 on Windows 2003 server?
>
> I'm using ASP.NET code to print to a server print queue using
> PrintDocument.Print()
> (.NET framework v 1.1)
> I can print to a local printer plugged into LPT1 on the web server, but not
> to a network printer.
>
> The same printing code to a network printer works in a .NET web app when
> hosted on Windows XP pro, or Windows 2000 Server, but NOT on Windows 2003
> server.
> The same printing code to a network printer also works in a .NET Windows app
> on Windows 2003 server, when logged in to Windows as the same user that the
> web app is impersonating (DOMAIN\webaccount), so we know this account has
> sufficient permission to print to the netowrk printer.
>
> Web app configuration details:
> Web.config has <authentication mode="windows"/> <identity
> impersonate="true">
> Web Application is running in a virtual directory on the Default Web Site
> Virtual directory Security: anonymous access is enabled, & set to use the
> specific Windows domain account DOMAIN\webaccount. All the other
> authenticated access methods are disabled/unchecked
> Application pool: our Web Application is using a specific application pool
> that uses DOMAIN\webaccount as its identity.
> IIS 6 is not running in IIS 5 isolation mode.
>
> The errror from PrintDocument.Print() is
> System.Drawing.Printing.InvalidPrinterException: Tried to access printer
> '\\REMOTEMACHINE\PrinterName' with invalid settings.
>
> Full stack trace when call PrintDocument.Print:
> System.Drawing.Printing.InvalidPrinterException: Tried to access printer
> '\\REMOTEMACHINE\PrinterName' with invalid settings. at
> System.Drawing.Printing.PrinterSettings.GetHdevmodeInternal() at
> System.Drawing.Printing.PrinterSettings.GetHdevmode(PageSettings
> pageSettings) at
> System.Drawing.Printing.PrintController.OnStartPrint(PrintDocument document,
> PrintEventArgs e) at
> System.Windows.Forms.PrintControllerWithStatusDialog.OnStartPrint(PrintDocum
> ent document, PrintEventArgs e) at
> System.Drawing.Printing.PrintController.Print(PrintDocument document) at
> System.Drawing.Printing.PrintDocument.Print() at
> PrintingGDI.WebForm1.Button1_Click(Object sender, EventArgs e)
>
> What could be preventing ASP.NET from printing to a network printer?
>
> Thanks for any ideas,
>
> Tessa
>
>

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