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Document MSBuild support for 'IfDifferent' for 'CopyToOutputDirectory' #44060

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Jan 8, 2025
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Document MSBuild support for 'IfDifferent' for 'CopyToOutputDirectory' #44060

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Update msbuild-props.md
JanKrivanek Dec 23, 2024
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Update docs/core/project-sdk/msbuild-props.md
JanKrivanek Jan 3, 2025
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JanKrivanek Jan 3, 2025
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2 changes: 1 addition & 1 deletion docs/core/project-sdk/msbuild-props.md
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Expand Up @@ -1783,7 +1783,7 @@ In addition to the standard [MSBuild item attributes](/visualstudio/msbuild/item

### CopyToPublishDirectory

The `CopyToPublishDirectory` metadata on an MSBuild item controls when the item is copied to the publish directory. Allowable values are `PreserveNewest`, which only copies the item if it has changed, `Always`, which always copies the item, and `Never`, which never copies the item. From a performance standpoint, `PreserveNewest` is preferable because it enables an incremental build.
The `CopyToPublishDirectory` metadata on an MSBuild item controls when the item is copied to the publish directory. Allowable values are `PreserveNewest`, which only copies the item if it has changed in the source location, `IfDifferent`, which only copies the item if it has changed either in the source or target location (helpful for situations where we need to reset changs occuring after the publishing), `Always`, which always copies the item, and `Never`, which never copies the item. From a performance standpoint, `PreserveNewest` is preferable because it enables an incremental build. `Always` should be avoided - as any scenarios requiring it should be achievable with more effective `IfDifferent`.

```xml
<ItemGroup>
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