Introducing Microsoft® Office InfoPath™ 2003

Cascading Drop-Down List Box Selections

InfoPath lets you filter a secondary data source or the repeating section of a form that serves as the data source of a list box. This capability lets you use a primary (parent) list box to determine the list items of a secondary (child) list box. As an example, a Country list box can limit choices in a City list box to those cities in the selected country. In this case, the repeating section must contain elements with Country and City child elements for each city. CountryCity.xml in the C:\Microsoft Press\Introducing InfoPath 2003\Chapter09\DataSources folder is an example of the required repeating section structure. Cascading list boxes aren’t limited to a two-level hierarchy; as an example, you can ...