Question

我们有一个WPF应用程序，除其他外，使用异步sintax大约每两分钟打印一次报告。该报告使用 SAP Crystal Reports，Microsoft Visual Studio 13.0.15.1840的版本进行。已开发应用程序的计算机还具有 SAP Crystal Reports运行时引擎64位13.0.15.1840 。以下是异步代码的代码：

private async void StartAsyncOperation()
    {
        while (true)
        {
            try
            {
                if (_isActive)
                {
                    await Task.Run(() =>
                    {
                        PrintTravelSheet();
                    });
                    await Task.Delay(_delayPrinterTime);
                }
                else break;
            }
            catch (Exception e)
            {

                SendWarningAlerts(string.Format("Error!!! You should be worried! \n {0}", e));
            }
        }
    }

使用 SAP Crystal Reports运行时64位13.0.8.1216 将应用程序部署到具有Windows Server 2012的计算机上。以下是 PrintTravelSheet 用于打印的代码：

try
        {//_hojaViajera is my Crystal Report
            _hojaViajera = new HojaViajera();
            InitializeTravelSheet(printerConfig, tracking, configBits);
            System.Drawing.Printing.PrinterSettings printerSettings = new System.Drawing.Printing.PrinterSettings();
            printerSettings.PrinterName = printerConfig.PrinterName;
            _hojaViajera.PrintToPrinter(printerSettings, new System.Drawing.Printing.PageSettings(), false);
        }
        catch (Exception ex)
        {
            //here I send emails with error log
        }
        finally
        {
            _hojaViajera.Close();
            _hojaViajera.Dispose();
        }

通常应用程序可以正常运行两周或更多，但在此之后处理打印操作的线程崩溃并且我收到以下异常：

** **Message Error: CrystalDecisions.CrystalReports.Engine.InternalException: There are not enough free System Resources to perform this operation.
Error formatting Field Object.
Error in File temp_1d4e04c2-7dc4-4896-a347-edc086582c07 {BFFFC1AF-E765-4FF0-BBEC-02929B533486}.rpt:
Low system resources.. ---> System.Runtime.InteropServices.COMException: There are not enough free System Resources to perform this operation.
Error formatting Field Object.
Error in File temp_1d4e04c2-7dc4-4896-a347-edc086582c07 {BFFFC1AF-E765-4FF0-BBEC-02929B533486}.rpt:
Low system resources..
   at CrystalDecisions.ReportAppServer.Controllers.ReportSourceClass.GetPage(PageRequestContext pPageRequestContext)
   at CrystalDecisions.ReportSource.EromReportSourceBase.GetPage(PageRequestContext pageReqContext)
   --- End of inner exception stack trace ---
   at CrystalDecisions.ReportAppServer.ConvertDotNetToErom.ThrowDotNetException(Exception e)
   at CrystalDecisions.ReportSource.EromReportSourceBase.HandleException(Exception exception)
   at CrystalDecisions.ReportSource.EromReportSourceBase.GetPage(PageRequestContext pageReqContext)
   at CrystalDecisions.CrystalReports.Engine.FormatEngine.QueryPageSettingsEventHandler(Object sender, QueryPageSettingsEventArgs e)
   at System.Drawing.Printing.PrintDocument.OnQueryPageSettings(QueryPageSettingsEventArgs e)
   at System.Drawing.Printing.PrintDocument._OnQueryPageSettings(QueryPageSettingsEventArgs e)
   at System.Drawing.Printing.PrintController.PrintLoop(PrintDocument document)
   at System.Drawing.Printing.PrintController.Print(PrintDocument document)
   at System.Drawing.Printing.PrintDocument.Print()
   at CrystalDecisions.CrystalReports.Engine.FormatEngine.PrintToPrinter(PrinterSettings printerSettings, PageSettings pageSettings, PrintLayoutSettings layoutSettings, Boolean reformatReportPageSettings)
   at CrystalDecisions.CrystalReports.Engine.ReportDocument.PrintToPrinter(PrinterSettings printerSettings, PageSettings pageSettings, PrintLayoutSettings layoutSettings, Boolean reformatReportPageSettings)
   at CrystalDecisions.CrystalReports.Engine.ReportDocument.PrintToPrinter(PrinterSettings printerSettings, PageSettings pageSettings, Boolean reformatReportPageSettings)**
**

然后我关闭应用程序并重新开始，一切恢复正常。到目前为止，我无法在我的机器甚至服务器上重现错误。欢迎任何帮助或解决方法。

Crystal Reports PrintToPrinter在一段时间正常工作后抛出异常

0 个答案: