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Add missing documentation - #131649

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Add missing documentation#131649
alinpahontu2912 wants to merge 1 commit into
dotnet:mainfrom
alinpahontu2912:alinpahontu2912/xml-doc-completeness

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Add or update missing documentation for Compression area methods/enums

Copilot AI review requested due to automatic review settings July 31, 2026 14:40
@alinpahontu2912 alinpahontu2912 self-assigned this Jul 31, 2026
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Tagging subscribers to this area: @karelz, @dotnet/area-system-io-compression
See info in area-owners.md if you want to be subscribed.

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Pull request overview

This PR updates XML documentation in the System.IO.Compression area to better describe existing members and correct a minor doc typo, improving API discoverability and reference docs quality.

Changes:

  • Add missing XML docs for ZipArchiveEntry.Crc32, ZipArchiveEntry.ExternalAttributes, and ZipArchiveEntry.Open(FileAccess, ReadOnlySpan<char>).
  • Add XML docs for the CompressionMode enum and its members.
  • Improve/extend BrotliStream XML docs (add exception docs for WriteAsync(byte[],int,int,...) and fix a parameter description typo for async read).

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 1 comment.

File Description
src/libraries/System.IO.Compression/src/System/IO/Compression/ZipArchiveEntry.cs Adds XML documentation for checksum/attributes and the password+access Open overload.
src/libraries/System.IO.Compression/src/System/IO/Compression/CompressionMode.cs Adds enum and member summaries for CompressionMode.
src/libraries/System.IO.Compression.Brotli/src/System/IO/Compression/enc/BrotliStream.Compress.cs Adds exception documentation to WriteAsync(byte[],int,int,...).
src/libraries/System.IO.Compression.Brotli/src/System/IO/Compression/dec/BrotliStream.Decompress.cs Fixes a typo in the count parameter description.

Comment on lines +128 to 132
/// <exception cref="System.ArgumentNullException"><paramref name="buffer" /> is <see langword="null" />.</exception>
/// <exception cref="System.ArgumentOutOfRangeException"><paramref name="offset" /> or <paramref name="count" /> is negative.</exception>
/// <exception cref="System.ArgumentException">The sum of <paramref name="offset" /> and <paramref name="count" /> is greater than the buffer length.</exception>
/// <exception cref="System.ObjectDisposedException">The write operation cannot be performed because the stream is closed.</exception>
/// <remarks><para>This method enables you to perform resource-intensive I/O operations without blocking the main thread. This performance consideration is particularly important in apps where a time-consuming stream operation can block the UI thread and make your app appear as if it is not working. The async methods are used in conjunction with the <see langword="async" /> and <see langword="await" /> keywords in Visual Basic and C#.</para>
@alinpahontu2912 alinpahontu2912 added this to the Future milestone Jul 31, 2026
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