unoplatform/uno

DP callback are invoked before updating 2-way binding

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#3,774 opened on Aug 10, 2020

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difficulty/medium 🤔good first issuehas-repro-branchkind/bugproject/binding 🪢

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Description

Current behavior

The callbacks on DP are invoked before the 2-way bindings are updated

Expected behavior

Probably the opposite (To be confirmed!)

How to reproduce it (as minimally and precisely as possible)

Rollback changes of https://github.com/unoplatform/uno/pull/3775

Environment

Nuget Package: Uno.UI Package Version(s): 3.0 Affected platform(s):

  • iOS
  • [?] Android
  • [?] WebAssembly
  • WebAssembly renderers for Xamarin.Forms
  • [?] macOS
  • Windows
  • Build tasks
  • Solution Templates

Contributor guide

Research direction
Inspect the order of dependency property callback invocations versus two way binding updates, starting from the changes in PR #3775.
Tech stack
csharp
Domain
frontend
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
C#Uno Platform
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50