Triggers in Xamarin.Forms 1.3

Yesterday, I wrote about one of the new features in Xamarin.Forms 1.3 (Technology Preview 2), Styles.  Today I’ll take a first look at Triggers.

Triggers

The key idea of Triggers is “When this happens, do that.” More specifically, “When this property has that value, then set this other property to this new value.”  Huh?  Perhaps this is easier to show than to explain.

Let’s suppose we’re building a form and we’d like to enhance the Entry control so that when the user is entering data the text color is blue, but when they are done the text color turns black.

Step one is to create a style in the Resource Dictionary and to give that Style a set of Triggers… Continued here

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About Jesse Liberty

** Note ** Jesse is currently looking for a new position. You can learn more about him at https://jesseliberty.bio Thank you. Jesse Liberty has three decades of experience writing and delivering software projects and is the author of 2 dozen books and a couple dozen online courses. His latest book, Building APIs with .NET, is now available wherever you buy your books. Liberty was a Team Lead and Senior Software Engineer for various corporations, a Senior Technical Evangelist for Microsoft, a Distinguished Software Engineer for AT&T, a VP for Information Services for Citibank and a Software Architect for PBS. He is a 13 year Microsoft MVP.
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