Validate mimeType in ImageContentBlock.FromBytes and AudioContentBlock.FromBytes#1321
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stephentoub merged 3 commits intomainfrom Feb 20, 2026
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…ntBlock.FromBytes Co-authored-by: stephentoub <2642209+stephentoub@users.noreply.github.com>
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[WIP] Fix FromBytes methods to throw exception for null or whitespace mime type
Validate mimeType in ImageContentBlock.FromBytes and AudioContentBlock.FromBytes
Feb 20, 2026
stephentoub
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Feb 20, 2026
halter73
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Feb 20, 2026
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ImageContentBlock.FromBytesandAudioContentBlock.FromBytessilently accepted null/whitespacemimeType, producing invalid content blocks. Now throwsArgumentNullException/ArgumentExceptionviaThrow.IfNullOrWhiteSpace.Throw.IfNullOrWhiteSpace(mimeType)guard to bothFromBytesmethods<exception cref="InvalidOperationException">XML doc withArgumentNullExceptionandArgumentExceptionnull,"", and" "inputs for both methods💬 We'd love your input! Share your thoughts on Copilot coding agent in our 2 minute survey.