July 2007
Intermediate to advanced
224 pages
4h 31m
English
book
Programming Microsoft® Composite UI Application Block and Smart Client Software Factory
by David S. Platt
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D. More Complex Example: Passing and Modifying Parameters
It is reasonable and likely that an action method would like some sort of input parameter to help it do its job. You can pass this as the last parameter to the Execute method. It can be an object of any type. In the hospital example, you might expect that this would be the new patient ID. Counterintuitively, we don't do that. The reason is that we want the currently selected patient ID to come from one and only one place, that being the clinical context service. That way, it can never get out of sync.
You can also use the object parameter as a means to get output from the action method and even the action conditions. The parameter is passed by reference, so the action conditions can modify ...
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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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