ACC: Keeping Subreport or Text Box Data Together on a Page

MORE INFORMATION

The following steps use the sample database Northwind.mdb to demonstrate how you can use report sections to simulate a KeepTogether property for subreport and text box controls.

Creating a Subreport

1. Open the sample database Northwind.mdb.
2. Run the Report Wizard to create a report based on the Products table.
3. In the "Which Fields do you want on your report?" box, add the following fields to the Selected Fields list:
   

         ProductName
         QuantityPerUnit
         UnitPrice
   						

4. Click Finish.
5. Close the report.
6. In the Database window, use the right mouse button to click the Products report, and then click Rename on the menu that appears. Type the following name for the report, and then press ENTER:
   
   srptProducts

Creating a Main Report

1. Run the Report Wizard to create a report based on the Categories table.
2. In the "Which Fields do you want on your report?" box, add all of the fields to the Selected Fields list.
3. Click Finish.
4. Close the report.
5. In the Database window, use the right mouse button to click the Categories report, and then click Rename on the menu that appears. Type the following name for the report, and then press ENTER:
   
   rptCategories
6. Open the rptCategories report in Design View.
7. On the View menu, click Sorting And Grouping.
8. In the Field/Expression dialog box, select CategoryID in the first row and type the following expression in the second row (below CategoryID):
   
   =1
9. For the "=1" expression, select "Yes" in the GroupFooter property.

Adding the Subreport to the Main Report

1. Drag the srptProducts report from the Database window and drop it onto "=1" group footer to create the subreport container.
2. Change the following subreport control properties:
   

         SubReport control:
           Name: Products
           ControlSource: Report.srptProducts
           LinkChildFields: CategoryID
           LinkMasterFields: CategoryID
           CanGrow: Yes
           Left: 0
           Top: 0
           Width: 7
           Height: .25
   						

3. Select the "=1" group footer and set its properties as follows:
   

         ProductsGroup Footer:
           KeepTogether: Yes
           CanGrow: Yes
           Height: .25
   						

4. Preview the rptCategories report. Note that the subreport data is printed on one page, rather than across two or more pages.

Additional Notes

• Creating an "artificial" group (as demonstrated in this article) works well for subreport controls, as well as for text box controls bound to Memo fields. When Memo fields are printing, there are no events triggered until the Memo field is finished. Therefore, you cannot tell if the Memo field will split data between two pages. By placing the Memo field in its own "artificial" group, the group's KeepTogether property will test the layout of the Memo field before printing and keep the text together on one page when printing.
• If your subreport or text box does not grow, you can size the subreport control in the main report to be the same size as the subreport itself. Then, set the KeepTogether property of the subreport's section on the main report to No. When you print the report, Microsoft Access will not generate a page break in the middle of a control.
• If your subreport or text box does grow, you should place the control into its own section and set the KeepTogether property for the subreport's section in the main report to Yes.