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NuGet · #1688 most downloaded on NuGet
OpenMcdf is a 100% .NET / C# component that allows developers to manipulate Microsoft Compound Document File Format for OLE structured storage. It supports read/write operations on streams and storages and traversal of directory trees.
Last release 1 months ago
03 Sep 2026
Release timing varies
gaps range from 8 days to 6 months
Some releases are documented
notes for 11 of 32 stable releases
5 versions withdrawn
withdrawn after publishing
127 years old
37 releases · first in 1900
Increment transaction signature number by @jeremy-visionaid with @Copilot in #459
ArgumentOutOfRangeException construction to preserve ParamName by @jeremy-visionaid with @Copilot in #471TransactedStream by @jeremy-visionaid with @Copilot in #475Full Changelog: v3.2.0...v3.3.0
One column per quarter.
Allow optional strict validation by @jeremy-visionaid in #454
Full Changelog: v3.1.4...v3.2.0
Fix presubmit workflow permissions by @jeremy-visionaid in #418
Full Changelog: v3.1.3...v3.1.4
Thanks to @pawlos for finding and reporting GHSA-5qwm-7pvp-w988
Add 'Hancom office files' to the structured storage explorer file ext… by @Numpsy in #393
Full Changelog: v3.1.2...v3.1.3
Thanks to @pawlos for finding and reporting GHSA-jxpf-xq2m-q525
Update NuGet dependencies by @jeremy-visionaid in #386
Full Changelog: v3.1.1...v3.1.2
Update LangVersion to v14 by @jeremy-visionaid in #358
Full Changelog: v3.1.0...v3.1.1
Fix NuGet publish by @jeremy-visionaid in #341
Full Changelog: v3.0.3...v3.1.0
Update Storage Explorer by @jeremy-visionaid in #325
Full Changelog: v3.0.2...v3.0.3
Throw FileFormatException for invalid DateTimes by @jeremy-visionaid in #311
Full Changelog: v3.0.1...v3.0.2
Fix CLSID typo by @jeremy-visionaid in #287
Full Changelog: v3.0.0...v3.0.1
Multi-targeting for netstandard2.0 and net8.0
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FIXED: In particular conditions, an opened file could be left opened after a loading exception
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