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WPF in .NET 10 Preview 2 - Release Notes

Here's a summary of what's new in WPF in this preview release:

WPF updates in .NET 10:

Performance Improvements

Enhanced performance by replacing data structures and optimizing method operations, including a shift from PartialList to ReadOnlyCollection, minimizing allocations in UI automation and file dialogs, and speeding up pixel format conversions.

Fluent Style Changes

Various bug fixes have been addressed in .NET 10 Preview 2, to improve the Fluent UI style support in WPF.

  • Default style for Label.
  • Fixed the animation for Expander by adjusting a KeyTime value.

Bug Fixes

Addressed various bug fixes including UI element cursor types, crash issues when bitmap streams are null, build and test step errors, and minor bugs in BitmapMetadata and native dependencies. Other fixes include:

  • Updated text pointer normalization.
  • Fixed localization issues for ScrollViewer and ContextMenu.

Engineering Health

  • Updated and synchronized MilCodeGen across multiple WPF components and disabled code analysis for generated code to streamline builds.
  • Removed deprecated .NET runtime and unnecessary package references, and conducted style cleanups to address warnings and improve code quality.