May 2019
Intermediate to advanced
504 pages
11h 50m
English
Content preview from Hands-On Mobile Development with .NET Core
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Broadcasting to multiple devices
In the previous example, we used the username tag to define a specific user as the target of the notification message. In addition to single tags, tag expressions can also be used to define a larger group of users that subscribed to a specific notification category. For instance, in order to send the notification to all of the users that accepted auction updates on new auctions and who are also interested in a specific auto manufacturer, the tag may look as follows:
notification:NewAuction && interested:Manufacturer:Volvo
Another scenario would be to send a notification about a new highest bid on an auction:
notification:HighestBid && auction:afabc239-a5ee-45da-9236-37abc3ca1375 && !username:john.smith@test.com ...
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