How to: Conditionally Display Filter Headers
If you apply a filter to the data in a report, then we recommend that you create an additional header row in the report to display the filter. You display this header row only if the user specifies a filter. If no filter is specified, then the filter header is not displayed.
To conditionally display the filter header, you must add a filter variable to the report dataset. Next, in the RDLC report layout, you must create a conditional expression on the visibility of the filter header that uses the filter variable that you added to the dataset.
An example of a report that has additional header rows to display filter information is report 113, Customer/Item Sales.
To hide non-filtered headers
In the development environment, on the Tools menu, choose Object Designer.
In Object Designer, choose Report, select the report that you want to modify, and then choose Design.
On the View menu, choose C/AL Globals.
In the C/AL Globals window, on the Variables tab, add a new variable for the filter. The DataType of the variable is Text.
On the View menu, choose C/AL Code.
In the C/AL Editor, in the OnPreReport trigger, add code to get the filters. For example, if you have a filter on the Customer table and the filter variable that you created is named CustFilter, then add the following code.
CustFilter := Customer.GETFILTERS;In Report Dataset Designer, under the DataItem for the table to which a filter can be applied, add a new line.
In the Data Type field of the new line, choose Column.
In the Data Source field of the new line, enter the name of the filter variable.
On the File menu, choose Save. In the Save dialog box, verify that Compiled is selected, and then choose OK.
On the View menu, choose Layout.
In Microsoft Visual Studio, on the View menu, choose Toolbox.
From the Toolbox, under Report Items, drag a Text Box to the report layout.
Select the filter header text box that you created in step 12, and then on the View menu, choose Properties Window.
In the Properties window, expand the Visibility field. In the Hidden field, select <Expression…> from the drop-down list.
In the Expression window, create a conditional statement. For example, the following are the conditional statements for the two filter text boxes on report 113.
=IIF(First(Fields!CustFilter.Value) = "",TRUE,FALSE) IIF(First(Fields!ItemLedgEntryFilter.Value) = "",TRUE,FALSE)Save and compile the report. For more information, see How to: Integrate Report Dataset Designer and Visual Studio Report Designer.