DocumentFormat.OpenXml 2.10.1

The Open XML SDK provides tools for working with Office Word, Excel, and PowerPoint documents. It supports scenarios such as: - High-performance generation of word-processing documents, spreadsheets, and presentations. - Populating content in Word files from an XML data source. - Splitting up (shredding) a Word or PowerPoint file into multiple files, and combining multiple Word/PowerPoint files into a single file. - Extraction of data from Excel documents. - Searching and replacing content in Word/PowerPoint using regular expressions. - Updating cached data and embedded spreadsheets for charts in Word/PowerPoint. - Document modification, such as removing tracked revisions or removing unacceptable content from documents.

Showing the top 20 packages that depend on DocumentFormat.OpenXml.

Packages Downloads
ClosedXML
ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.
10
CsvHelper.Excel.Core
An implementation of ICsvParser and ICsvSerializer from CsvHelper that reads and writes using the ClosedXml library.
9
ClosedXML
ClosedXML makes it easier for developers to create Excel 2007/2010 files. It provides a nice object oriented way to manipulate the files (similar to VBA) without dealing with the hassles of XML Docume
8
CsvHelper.Excel.Core
An implementation of ICsvParser and ICsvSerializer from CsvHelper that reads and writes using the ClosedXml library.
7
ClosedXML
Package Description
7
CsvHelper.Excel.Core
An implementation of ICsvParser and ICsvSerializer from CsvHelper that reads and writes using the ClosedXml library.
6
ClosedXML
See release notes https://github.com/ClosedXML/ClosedXML/releases/tag/0.104.1 ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.
6
ClosedXML
See release notes https://github.com/ClosedXML/ClosedXML/releases/tag/0.102.3 ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.
6
ClosedXML
See release notes https://github.com/ClosedXML/ClosedXML/releases/tag/0.100.0. ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.
6
ClosedXML
See release notes https://github.com/ClosedXML/ClosedXML/releases/tag/0.101.0 ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.
6
ClosedXML
ClosedXML makes it easier for developers to create Excel 2007+ (.xlsx, .xlsm, etc) files. It provides a nice object oriented way to manipulate the files (similar to VBA) without dealing with the hassles of XML Documents. It can be used by any .NET language like C# and VisualBasic.NET.
6
ClosedXML
ClosedXML is a .NET library for reading, manipulating and writing Excel 2007+ (.xlsx, .xlsm) files. It aims to provide an intuitive and user-friendly interface to dealing with the underlying OpenXML API.
6

Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog and this project adheres to Semantic Versioning.

Version 2.10.1 - 2020-02-28

Fixed

  • Ensures attributes are available when OpenXmlElement is initialized with outer XML (#684, #692)
  • Some documentation errors (#681)
  • Removed state that made it non-thread safe to validate elements under certain conditions (#686)
  • Correctly inserts strongly-typed elements before known elements that are not strongly-typed (#690)

Version 2.10.0 - 2020-01-10

Added

  • Added initial Office 2016 support, including FileFormatVersion.Office2016, ExtendedChartPart and other new schema elements (#586)
  • Added .NET Standard 2.0 target (#587)
  • Include symbols support for debugging (#650)
  • Exposed IXmlNamespaceResolver from XmlPath instead of formatted list of strings to expose namespace/prefix mapping (#536)
  • Implemented IComparable<T> and IEquatable<T> on OpenXmlComparableSimpleValue to allow comparisons without boxing (#550)
  • Added OpenXmlPackage.RootPart to easily access the root part on any package (#661)

Changes

  • Updated to v4.7.0 of System.IO.Packaging which brings in a number of perf fixes (#660)
  • Consolidated data for element children/properties to reduce duplication (#540, #547, #548)
  • Replaced opaque binary data for element children constraints with declarative model (#603)
  • A number of performance fixes to minimize allocations where possible
  • 20% size reduction from 5.5mb to 4.3mb
  • The validation subsystem went through a drastic redesign. This may cause changes in what errors are reported.

Fixed

  • Fixed some documentation inconsistencies (#582)
  • Fixed ToFlatOpcDocument, ToFlatOpcString, FromFlatOpcDocument, and FromFlatOpcString to correctly process Alternative Format Import Parts, or "altChunk parts" (#659)

Version 2.9.1 - 2019-03-13

Changed

  • Added a workaround for a .NET Native compiler issue that doesn't support calling Marshal.SizeOf with a struct that contains auto-implemented properties (#569)
  • Fixed a documentation error (#528)

Version 2.9.0 - 2018-06-08

Added

  • ListValue now implements IEnumerable<T> (#385)
  • Added a WebExtension.Frozen and obsoleted misspelled Fronzen property (#460)
  • Added an OpenXmlPackage.CanSave property that indicates whether a platform supports saving without closing the package (#468)
  • Simple types (except EnumValue and ListValue) now implement IComparable<T> and IEquatable<T> (#487)

Changed

  • Removed state that was carried in validators that would hold onto packages when not in use (#390)
  • EnumSimpleType parsing was improved and uses less allocations and caches for future use (#408)
  • Fixed a number of spelling mistakes in documentation (#462)
  • When calling OpenXmlPackage.Save on .NET Framework, the package is now flushed to the stream (#468)
  • Fixed race condition while performing strict translation of attributes (#480)
  • Schema data for validation uses a more compact format leading to a reduction in dll size and performance improvements for loading (#482, #483)
  • A number of APIs are marked as obsolete as they have simple workarounds and will be removed in the next major change
  • Fixed some constraint values for validation that contained Office 2007, even when it was only supported in later versions
  • Updated System.IO.Packaging to 4.5.0 which fixes some issues on Xamarin platforms as well as minimizes dependencies on .NET Framework

Version 2.8.1 - 2018-01-03

Changed

  • Corrected package license file reference to show updated MIT License

Version 2.8.0 - 2017-12-28

Added

  • Default runtime directive for better .NET Native support.

Changed

  • Fixed part saving to be encoded with UTF8 but no byte order mark. This caused some renderers to not be able to open the generated document.
  • Fixed exceptions thrown when errors are encountered while opening packages to be consistent across platforms.
  • Fixed issue on Mono platforms using System.IO.Packaging NuGet package (Xamarin, etc) when creating a document.
  • Fixed manual saving of a package when autosave is false.
  • Fixed schema constraint data and standardized serialization across platforms.
  • Upgraded to System.IO.Packaging version 4.4.0 which fixes some consistency with .NET Framework in opening packages.

Version 2.7.2 - 2017-06-06

Added

  • Package now supports .NET 3.5 and .NET 4.0 in addition to .NET Standard 1.3 and .NET Framework 4.6

Changed

  • Fixed issue where assembly version wasn't set in assembly.

Version 2.7.1 - 2017-01-31

Changed

  • Fixed crash when validation is invoked on .NET Framework with strong-naming enforced.

Version 2.7.0 - 2017-01-24

Added

  • SDK now supports .NET Standard 1.3

Changed

  • Moved to using System.IO.Packaging from dotnet/corefx for .NET Standard 1.3 and WindowsBase for .NET 4.5.
  • Cleaned up project build system to use .NET CLI.

Version 2.6.1 - 2016-01-15

Added

  • Added hundreds of XUnit tests. There are now a total of 1333 tests. They take about 20 minutes to run, so be patient.

Version 2.6.0 - 2015-06-29

Added

  • Incorporated a replacement System.IO.Packaging that fixes some serious (but exceptional) bugs found in the WindowsBase implementation

.NET Framework 3.5

  • No dependencies.

.NET Framework 4.0

  • No dependencies.

.NET Framework 4.6

.NET Standard 1.3

.NET Standard 2.0

Version Downloads Last updated
3.4.1 1 01/16/2026
3.3.0 6 03/11/2025
3.2.0 5 03/11/2025
3.1.1 5 03/11/2025
3.1.0 5 03/11/2025
3.0.2 5 03/11/2025
3.0.1 5 03/11/2025
3.0.0 5 03/11/2025
3.0.0-beta0003 5 03/11/2025
3.0.0-beta0002 5 03/11/2025
2.20.0 5 03/11/2025
2.19.0 5 03/11/2025
2.18.0 5 03/11/2025
2.17.1 5 03/11/2025
2.16.0 5 03/11/2025
2.15.0 5 03/11/2025
2.14.0 5 03/11/2025
2.14.0-beta0001 7 03/11/2025
2.13.1 5 03/11/2025
2.13.0 5 03/11/2025
2.13.0-beta0002 5 03/11/2025
2.13.0-beta0001 5 03/11/2025
2.12.3 5 03/11/2025
2.12.2 5 03/11/2025
2.12.1 10 01/14/2025
2.12.0 5 03/11/2025
2.11.3 5 03/11/2025
2.11.2 5 03/11/2025
2.11.1 5 03/11/2025
2.11.0 5 03/11/2025
2.11.0-beta0001 5 03/11/2025
2.10.1 5 03/11/2025
2.10.0 5 03/11/2025
2.10.0-beta0002 5 03/11/2025
2.10.0-beta0001 5 03/11/2025
2.9.1 5 03/11/2025
2.9.0 5 03/11/2025
2.8.1 5 03/11/2025
2.8.0 5 03/11/2025
2.7.2 5 03/11/2025
2.7.1 5 03/11/2025
2.5.0 5 03/11/2025
1.0.0 5 03/11/2025