Link/Expression Data Source
With "Link/Expression" data source, label field output value will be the result of evaluation of an Expression at print time. You set up the "Link/Expression" data source in the following steps.
- First, select "Link/Expression" option from the "Data Source" combo box.
- Secondly, construct a Expression in Expression input box. See Fig. This is actually an addition formula containing optionally other label field name and various function names. The expression content can be manually typed in or by using the Insert Buttons below the Expression Input Box.
The validity of Expression can be test by clicking the Test button. See Fig. The test result will be shown in the text box to the right of Test button.
The Fig below shows the situation where two label fields, named Text1/Text2, and a constant string (" --- "), are used in construction of the Expression formula. The label fields contain value "2P Barcode Creator" and "Part 333", respectively. The test result is shown as the concatenation of the three elements in the expression. See Fig.
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