How to use the FilterControllerClass with a sample

Question

Hi,
I am having a sample for adding new parameters at runtime.
However I need more info.
What I try to accomplish what I want runtime, can be compared when using the CR designer, where you first add a parameter and then use the report record expert selection filter to select a database table column and assign that to this parameter. The recordselection would then look like this {table.field = {?parameter1}.
As I said before I need a sample to accomplish this runtime. I need a sample, because I am stuck and can not get any further.
For that I need and want to use the RecordFilterController or the Filtercontrollerclass.
Thanks in advance.
Kind regards,
Maurice

Answer 1

Hi Maurice,
Note: this is to add a New Parameter to a report with saved data to give the end user more filter capabilities with existing data. Dave's solution is likely what you were really asking for....
This is something I did a long time ago but it should work for you. It uses RAS which you must also use:
        private void AddParameter(ISCDReportClientDocument reportClientDocument, string fieldName)
            ISCRParameterField newParameterField = new ParameterFieldClass();
            newParameterField.ParameterType = CrParameterFieldTypeEnum.crParameterFieldTypeReportParameter;
            newParameterField.Name = "Check Name";
            newParameterField.ReportName = "";
            newParameterField.Type = CrFieldValueTypeEnum.crFieldValueTypeStringField;
            newParameterField.AllowMultiValue = true;
            newParameterField.AllowCustomCurrentValues = true;
            Fields parameterFields = reportClientDocument.DataDefinition.ParameterFields;
            ISCRField existingParameterField;
            string tmp = String.Empty;
            tmp = parameterFields.Count.ToString();
            MessageBox.Show(tmp, "Number of Parameters", MessageBoxButtons.OK, MessageBoxIcon.Information);
            //tmp = parameterFields[1].get_LongName(CeLocale.ceLocaleEnglishCanada).ToString();
            //MessageBox.Show(tmp, "Parameters", MessageBoxButtons.OK, MessageBoxIcon.Information);
            RowsetMetaData rowsetMetaData = new RowsetMetaDataClass();
            Fields fields = new FieldsClass();
            ArrayList defaultValues = new ArrayList();
            fields.Add(reportClientDocument.DataDefController.DataDefinition.ResultFields.FindField(
                              "{STATUS_LKP.Description_Status}", CrFieldDisplayNameTypeEnum.crFieldDisplayNameFormula, CrystalDecisions.ReportAppServer.DataDefModel.CeLocale.ceLocaleUserDefault));
            rowsetMetaData.DataFields = fields;
            RowsetController rowsetController = reportClientDocument.RowsetController;
            RowsetCursor rowsetCursor = rowsetController.CreateCursor(null, rowsetMetaData, 0);
            // iterate over rows, add unique values to parameter default values
            do
                Record record = rowsetCursor.CurrentRecord;
                Record record1 = rowsetCursor.CurrentRecord;
                if (!defaultValues.Contains(record[0].ToString()))
                    defaultValues.Add(record[0].ToString());
                    newParameterField.DefaultValues.Add(record[0].ToString());
            } while (rowsetCursor.MoveNext());
            newParameterField.Usage = (int)CrParameterFieldUsageEnum.crParameterFieldUsageInUse;
            newParameterField.IsEditableOnPanel = true;
            newParameterField.IsShownOnPanel = true;
            reportClientDocument.DataDefController.ParameterFieldController.Add((ParameterField)newParameterField);
            //reportClientDocument.DataDefController.SavedDataFilterController.SetFormulaText("{CHECKS.Displayname_Chk} = {?Check Name}");
            reportClientDocument.DataDefController.SavedDataFilterController.SetFormulaText("{STATUS_LKP.Description_Status} = {?Check Name}");
            //reportClientDocument.DataDefController.ParameterFieldController.SetCurrentValue("", "Check Name", defaultValues[0].ToString());
            //for (int x = 1; x < defaultValues.Count - 1; x++)
            //    reportClientDocument.DataDefController.ParameterFieldController.SetCurrentValue("", "Check Name", defaultValues[x].ToString());
            //    newParameterField.CurrentValues.Add(defaultValues[x].ToString());
Thank you
Don
Edited by: Don Williams on Oct 7, 2010 1:19 PM