1355542 - How to add a RunningTotal using the Crystal Reports .NET inproc RAS SDK?

         //First create the formula field
         m_boFormulaField = new CrystalDecisions.ReportAppServer.DataDefModel.FormulaField();

          //Set the parameters (assume it's a string and Crystal Syntax)
          // this is the specific RunningTotal Formula (see Crystal Reports Help file)
          m_boFormulaField.Text = "WhilePrintingRecords; CurrencyVar Amount; Amount := Amount + {Customer.Last Year's Sales};";

          m_boFormulaField.Name = "RunningTotal";
          m_boFormulaField.Syntax = CrystalDecisions.ReportAppServer.DataDefModel.CrFormulaSyntaxEnum.crFormulaSyntaxCrystal;
          m_boFormulaField.Type = CrystalDecisions.ReportAppServer.DataDefModel.CrFieldValueTypeEnum.crFieldValueTypeCurrencyField;

           //Now add it to the report
           m_boReportClientDocument.DataDefController.FormulaFieldController.Add(m_boFormulaField);

            //Now that the formula has been created, add the newly created formula to the report

            //First determine which section to add the formula field to - in this case the details section
            m_boSection = m_boReportClientDocument.ReportDefController.ReportDefinition.DetailArea.Sections[0];

             //Get back all the formulafields in the report
            m_boFields = m_boReportClientDocument.DataDefController.DataDefinition.FormulaFields;

            m_boFieldIndex = m_boFields.Find({@RunningTotal},
                                       CrystalDecisions.ReportAppServer.DataDefModel.CrFieldDisplayNameTypeEnum.crFieldDisplayNameFormula,
                                       CrystalDecisions.ReportAppServer.DataDefModel.CeLocale.ceLocaleUserDefault);

             m_boField = (CrystalDecisions.ReportAppServer.DataDefModel.Field)m_boFields[m_boFieldIndex];

             //Set the type of field this is
             m_boField.Type = CrystalDecisions.ReportAppServer.DataDefModel.CrFieldValueTypeEnum.crFieldValueTypeCurrencyField;

             //Now create a new Field object which will be added to the report
             m_boFieldObject = new CrystalDecisions.ReportAppServer.ReportDefModel.FieldObject();

            //Set the datasource of this field object to the formula form of the above Database Field Object
            m_boFieldObject.DataSourceName = m_boFormulaField.FormulaForm;
            m_boFieldObject.FieldValueType = m_boFormulaField.Type;

            //Now set the co-ordinates of where the field will go
            m_boFieldObject.Left = 5 * 1440; //1440 twips per inc
            m_boFieldObject.Width = 2 * 1440;

           //And finally Add it to the report
           m_boReportClientDocument.ReportDefController.ReportObjectController.Add(m_boFieldObject, m_boSection, -1);

            //Display in reportviewer
            crystalReportViewer1.ReportSource = m_boReportDocument;