You can use the RunningSum property to calculate record-by-record or group-by-group totals in a report. The RunningSum property specifies whether a text box on a report displays a running total and lets you set the range over which values are accumulated. For example, you can group data by month and show the sum of each month's sales in the group footer. You can show the running sum of accumulated sales over the entire report (sales for January in the January footer, sales for January plus February in the February footer, and so on) by adding a text box to the footer that shows the sum of sales and setting its RunningSum property to Over All.
Note The RunningSum property applies only to a text box on a report.
Setting
The RunningSum property uses the following settings.
| Setting | Visual Basic | Description |
|---|---|---|
| No | 0 | (Default) The text box displays the data from the underlying field for the current record. |
| Over Group | 1 | The text box displays a running sum of values in the same group level. The value accumulates until another group level section is encountered. |
| Over All | 2 | The text box displays a running sum of values in the same group level. The value accumulates until the end of the report. |
You can set the RunningSum property by using the text box's property sheet, a macro, or Visual Basic. You can set the RunningSum property only in Design view.
Remarks
Place the text box in the Detail section to calculate a record-by-record total. For example, to number the records appearing in a detail section of a report, set the ControlSource property for the text box to "=1", and set the RunningSum property to Over Group.
Place the text box in a group header or group footer to calculate a group-by-group total.
You can have up to 10 nested group levels in a report.