To apply value formatting for a controls's content (e.g. date format, time format, currency format, currency digit count, or date-time format), locate
this control, click its Smart Tags , and in the
invoked actions list, click the ellipsis button for the Format String
entry.
Please read this section on the possible format strings. Printing Format
Then, in the invoked format string editor, choose one of the predefined
formatting styles, or specify a custom one.
To quit the dialog and apply the changes, click OK.
Similarly, when the mail-merge is employed
for a control's dynamic content, to apply a value formatting to an embedded data
field, select it in the in-place editor, and click the control's smart tag.
Then, in the invoked actions list, specify the required format.
Note that when a summary function is being applied to a control's
dynamic content, value formatting is applied separately, via the Summary
Editor, as described at Add Totals to a Report
Independently from the general (or, summary) value formatting, you can
specify a native XLSX format string, which is to be preserved when the report is
being exported to XLSX. This
can be done via a control's Xlsx Format String property.