March 2004
Beginner to intermediate
408 pages
10h 19m
English
Content preview from Microsoft® Office InfoPath™ 2003 Kick StartBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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What an Expression Box Is
Chapter 4, “InfoPath Form Controls,” describes almost all the InfoPath 2003 form controls. The expression box control gets its own chapter because it has some characteristics that are different from those of other controls.
In particular, an expression box control requires you to use XPath to create XPath expressions that are associated with the control. This technique allows you to display in a form view values that aren't entered by the user, but that are derived in some way from data the user enters into the view.
For example, you can automatically number an item by counting its position in an XPath node-set. Alternatively, you can sum the numbers in a column of numbers or find the average of a group of numbers.
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.