May 2019
Intermediate to advanced
504 pages
11h 50m
English
Content preview from Hands-On Mobile Development with .NET Core
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Triggers
Triggers can be defined as declarative actions that need to be executed. The different types of triggers are as follows:
- Property trigger: Property changes for a view
- Data trigger: Data value changes for a binding
- Event trigger: The occurrence of certain events on the target view
- Multi-trigger: Using this, it's also possible to implement a combination of triggers
To illustrate the use of triggers, we can use our previous example, where ReleaseDate for a certain item does not exist. In this scenario, because of TargetNullValue attribute being defined, the text of the label would be set to Release Unknown. Here, we can make use of a property trigger, which set the font color:
<Label x:Name="ReleaseDate" Text="{Binding ReleaseDate ...Become 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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