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Feb 21, 2025
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Update information for MSB3825 #44564

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Update information for MSB3825
JanKrivanek Jan 28, 2025
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JanKrivanek Feb 21, 2025
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2 changes: 1 addition & 1 deletion ...standard/serialization/binaryformatter-migration-guide/winforms-applications.md
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Expand Up @@ -76,7 +76,7 @@ Types that had been previously serialized into resource files via [BinaryFormatt

##### Generating resource files via msbuild

When generating resource files via msbuild, you may encounter an `MSB3825` error which specifies that your binary formatted resources may be deserialized using [BinaryFormatter] during runtime. As stated above, these resources will not deserialize using [BinaryFormatter] and this warning can be turned off by setting the property `GenerateResourceWarnOnBinaryFormatterUse` to `false`. In rare cases that deserialization cannot occur without [BinaryFormatter], it can be added back with an unsupported compatibility package. See [BinaryFormatter migration guide: Compatibility Package](compatibility-package.md) for details. Note that an additional step of setting `System.Resources.Extensions.UseBinaryFormatter` app context switch to `true` is required to use [BinaryFormatter] for resources.
When generating resource files via msbuild, you may encounter an `MSB3825` error which specifies that your binary formatted resources may be deserialized using [BinaryFormatter] during runtime. The warning is being removed from builds targetting NET9 and higher, however the warning removal is still not complete in all releases of NET9. It should be only of concern when targeting NET8 and lower - as as stated above, these resources will not deserialize using [BinaryFormatter] during runtime in NET9 and above. This warning can be turned off by setting the property `GenerateResourceWarnOnBinaryFormatterUse` to `false`. In rare cases that deserialization cannot occur without [BinaryFormatter], it can be added back with an unsupported compatibility package. See [BinaryFormatter migration guide: Compatibility Package](compatibility-package.md) for details. Note that an additional step of setting `System.Resources.Extensions.UseBinaryFormatter` app context switch to `true` is required to use [BinaryFormatter] for resources.

## Migrate away from BinaryFormatter

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