ZipArchive gives Unexpected end of data corrupted error

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Move zipStream.ToArray() outside of the zipArchive using.

The reason for your problem is that the stream is buffered. There’s a few ways to deal wtih it:

  • You can set the stream’s AutoFlush property to true.
  • You can manually call .Flush() on the stream.

Or, since it’s MemoryStream and you’re using .ToArray(), you can simply allow the stream to be Closed/Disposed first (which we’ve done by moving it outside the using).

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