Print Report and Parameter Prompt

Question

I am using Crystal 2008 and .Net 2005.  I have a report viewer on a windows form.  When I preview a report, the Crystal based dialog for the report parameters comes up and the users can enter the parameters.  When I call PrintToPrinter, this dialog does not come up and I get an error saying that there are Missing Parameter Values.  I can't pass the parameters directly to the report at runtime during "silent" printing because the user needs to select them on the Crystal based dialog.  How can I do this?  I thought the code with the comment  "//parameter not found, popup dialog for user to enter" would accomplish this.
Thanks
public override void PrintReport()
            ReportDocument report = this.CreateReportDocument();
            System.Drawing.Printing.PrinterSettings settings = new System.Drawing.Printing.PrinterSettings();
            if (this.Config.ReportOutput.Print != null)
                if (this.Config.ReportOutput.Print.PrinterName != string.Empty)
                    settings.PrinterName = Config.ReportOutput.Print.PrinterName;
            System.Drawing.Printing.PageSettings pageSettings = new System.Drawing.Printing.PageSettings();
            report.PrintToPrinter(settings, pageSettings, false);
            report.Close();
            report.Dispose();
            report = null;
private ReportDocument CreateReportDocument()
            ReportDocument report = new ReportDocument();
            report.Load(this.Config.CrystalSettings.ReportFileName);
            while (!report.IsLoaded)
                System.Threading.Thread.Sleep(1);
            ConnectionInfo ci = this.CreateConnectionInfo();
            this.UpdateReportDocumentTables(ref report, ref ci);
            this.UpdateReportDocumentSubReportTables(ref report, ref ci);
            this.UpdateParamFields(ref report);
            return report;
private void UpdateParamFields(ref ReportDocument ReportDoc)
            ParameterField field = null;
            ParameterFields fields = ReportDoc.ParameterFields;
            ParameterDiscreteValue paramValue = null;
            for (int i = 0; i < fields.Count; i++)
                field = fields<i>;
                if (field.Name.ToLower() == "office")
                    paramValue = new ParameterDiscreteValue();
                    paramValue.Value = this.Config.Office;
                    field.CurrentValues.Add(paramValue);
                    field.HasCurrentValue = true;
                else if (field.Name.ToLower() == "casekey")
                    paramValue = new ParameterDiscreteValue();
                    paramValue.Value = this.Config.CaseKey;
                    field.CurrentValues.Add(paramValue);
                    field.HasCurrentValue = true;
                else if (field.Name.ToLower() == "user")
                    paramValue = new ParameterDiscreteValue();
                    paramValue.Value = this.Config.User;
                    field.CurrentValues.Add(paramValue);
                    field.HasCurrentValue = true;
                else
                    //try to get parameter from passed in values
                    ReportParameter param = GetParameterByName(field.Name);
                    if (param != null)
                        paramValue = new ParameterDiscreteValue();
                        paramValue.Value = param.Value;
                        field.CurrentValues.Add(paramValue);
                        field.HasCurrentValue = true;
                    else //parameter not found, popup dialog for user to enter
                        field.CurrentValues.Clear();
                        field.HasCurrentValue = false;
                        field.IsOptionalPrompt = false;
Edited by: rmwade on Mar 18, 2010 4:31 PM

Answer 1

There are a number of sample apps that should server as examples:
csharp_web_discreteparams.zip
csharp_web_rangeparams.zip
csharp_web_sub_daterange_param.zip
vbnet_web_discreteparams.zip
vbnet_web_multirangeparams.zip
vbnet_web_rangeparams.zip
vbnet_web_sub_daterange_param.zip
and more. The samples can be found on [here|https://wiki.sdn.sap.com/wiki/display/BOBJ/CrystalReportsfor.NETSDK+Samples].
And don't forget to consult the developer help file for your version of CR.
Ludek