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copy-to-output-directory

separate

Choosing an MSBuild CopyToOutputDirectory / CopyToPublishDirectory mode: Never, PreserveNewest, Always, and IfDifferent (MSBuild 17.13+), plus $(SkipUnchangedFilesOnCopyAlways). USE FOR: removing the per-build Always copy perf hit; resetting output files mutated between builds. DO NOT USE FOR: general incremental-build diagnosis (use incremental-build); non-MSBuild build systems.

When to use

• removing the per-build Always copy perf hit
• resetting output files mutated between builds
• choosing CopyToOutputDirectory mode
• choosing CopyToPublishDirectory mode
• using SkipUnchangedFilesOnCopyAlways

When not to use

• general incremental-build diagnosis
• non-MSBuild build systems

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