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Sep 03, 2020 at 12:55 PM

Bug Crystal Report getting good printer with reportDocument.PrinttoPrinter()

107 Views Last edit Sep 03, 2020 at 03:03 PM 2 rev

I have an ASP.NET app on a domain server, linked to network printers over IP ports.

When I Use PrintToPrinter() function with the good printer name found, it sometimes not goes through the good printer.

Code:

public void Print()
{
   if (((TraceSwitch)Tracing.Switches["development"]).Level >= TraceLevel.Verbose)
   {
      string printerName = "Printer Laser 1"
      string installedPrinters = "Installed Printers: " + String.Join(",", PrinterSettings.InstalledPrinters.Cast<string>().ToList());
      Tracing.Write(installedPrinters, TraceLevel.Verbose);
      Tracing.Write("Report printer name: " + printerName, TraceLevel.Verbose);
   }
   
   bool printerExists = false;
   
   // Not using linq here, i want see where the compare does not work at the client site.
   foreach (string printer in PrinterSettings.InstalledPrinters)
   {
      Tracing.Write("Compare Installed printer: " + printer + ", Report printer: " + printerName, TraceLevel.Verbose);
      if (printer.Equals(printerName, StringComparison.InvariantCultureIgnoreCase))
      {
         Tracing.Write("Compare successful", TraceLevel.Verbose);
         printerExists = true;
         break;
      }
   }

   if (printerExists)
   {
      Tracing.Write("Printer found: " + printerName, TraceLevel.Verbose);
      Print(printerName);
   }
   else
   {
      Print(null);
   }
}

public void Print(string printerName)
{
   CrystalReportSource crs  = null;
   ReportDocument reportDoc = null;
   PrintDocument docToPrint = null;

   try
   {
      crs = GetCrystalReportSource(this.DataSet(), FullReportName);
      reportDoc = crs.ReportDocument;

      //A print Document is needed to be able to loop through the PaperSize based on a selected printer
      docToPrint = new PrintDocument();

      //If the printer exists, it will set it as the printer then the PaperSize collection will change and we can get the right one.
      if (printerName != null)
      {
         docToPrint.PrinterSettings.PrinterName = printerName;
         reportDoc.PrintOptions.NoPrinter = false;
         reportDoc.PrintOptions.PrinterName = printerName;

         PaperSize sizes = null;

         foreach (PaperSize size in docToPrint.PrinterSettings.PaperSizes)
         {
            if (size.PaperName == this.AppReport.PaperName)
               sizes = size;
         }
         if (sizes != null)
         {
            docToPrint.PrinterSettings.DefaultPageSettings.PaperSize = sizes;
            reportDoc.PrintOptions.PaperSize = (CrystalDecisions.Shared.PaperSize)sizes.RawKind;
         }
      }

      reportDoc.PrintToPrinter(1, false, 0, 0);
   }
   finally
   {
      // Release disposable resource
      if (docToPrint != null)
      {
         docToPrint.Dispose();
         docToPrint = null;
      }
      if (crs != null)
      {
         DisposeCrystalReportSource(crs); //dispose every sub section of the report
         crs = null;
         GC.Collect();         // Force garbage collection to alleviate infamous Crystal Reports leaks.
      }
   }
}