April 2017
Intermediate to advanced
706 pages
17h 8m
English
book
Programming Microsoft Dynamics NAV - Fifth Edition
by Marije Brummel, David Studebaker, Christopher D. Studebaker
Content preview from Programming Microsoft Dynamics NAV - Fifth Edition
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TESTFIELD
The TESTFIELD function is widely used in standard NAV code. With TESTFIELD, we can test a variable value and generate an error message in a single statement if the test fails. The syntax is as follows:
Record.TESTFIELD (Field, [Value])
If a Value is specified and the field does not equal that value, the process terminates with an error condition and an error message is issued.
If no Value is specified, the field contents are checked for values of zero or blank. If the field is zero or blank, then an error message is issued.
The advantage of TESTFIELD is ease of use and consistency in code, and in the message displayed. The disadvantage is the error message is not as informative as a careful developer would provide.
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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.