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NPOI

2.8.1121M downloads/monissl-lab/npoi ↗New releases in your daily digest, changelog included.

.NET port of Apache POI

Last release 16 days ago
22 Sep 2026
Ships fairly regularly
a new release about every 4 months
Some releases are documented
notes for 7 of 27 stable releases
12 versions withdrawn
withdrawn after publishing
127 years old
39 releases · first in 1900

Release timeline

39 releases since 1900

1900190219041906

Releases

2.8.122 Sept 2026Security
Fix System.Security.Cryptography.Xml vulnerability ( CVE-2026-26171 , CVE-2026-33116 ) by @tonyqus with @Copilot in #1802
Release Notes
Nuget Link

Important
To ensure the long-term sustainability of this project, a monthly maintenance fee has been introduced. This fee is required to be paid by all organizations or users of any library from this project who generate revenue. You can pay the fee via GitHub Sponsors.

To enact this, an EULA on binary releases is added to the repo and nuget packages that requires payment of the maintenance fee.

For more information on who must pay the fee and other frequently asked questions, please see the Open Source Maintenance Fee organisation page.

What's Changed

Fix file error while modify existing word document by @tonyqus in #1791

Pin zip entry timestamps to 1980-01-01 to match Excel by @ken-swyfft in #1755

Extra XDDF Charts Implementation by @opencode-agent[bot] in #1792

Eliminate redundant CT_Sst.si parallel list in SharedStringsTable write path by @tonyqus with @Copilot in #1793

Fix TEXT() formula function: resolve RefEval before StringEval check to prevent ErrorCode 15 by @tonyqus with @Copilot in #1794

Perf: O(1) style lookup in CellUtil via StyleKey/StyleCache, replacing O(n²) scan by @tonyqus in #1795

Fix: remove UTF-8 BOM from SheetDataWriter output by @WittgensteinHe in #1798

Optimize AutoSizeColumn: spatial index, font caching, maxRows overload by @ken-swyfft in #1758

Fix System.Security.Cryptography.Xml vulnerability (CVE-2026-26171, CVE-2026-33116) by @tonyqus with @Copilot in #1802

Sync XDDF from POI Bug 59623 (Angles/Width/Angle/Rotation) by @opencode-agent[bot] in #1796

Upgrade cryptography packages to 10.0.6 by @opencode-agent[bot] in #1803

Fix System.Memory FileLoadException on net472 test runs by @tonyqus with @Copilot in #1806

Fix NU1901 vulnerability warnings in build project by @tonyqus with @Copilot in #1807

Fix LazyStyles_UntouchedStylesPreservedOnSave test failure by @Yvees in #1804

Fix System.IO.FileLoadException for System.Memory on net472 by @tonyqus with @Copilot in #1809

Integrate ExcelFinancialFunctions as backing engine for NPOI financial formula evaluation by @tonyqus with @Copilot in #1808

Add locale-aware NumberToTextConverter.ToText overload; fix DataFormatter culture-sensitive parse failure by @tonyqus with @Copilot in #1783

Fix culture-sensitive numeric conversion in XDDF Chart data by @lievendf in #1812

Optimize PngUtils.MatchesPngHeader() by @stevenaw in #1815

Bump System.Security.Cryptography.Xml and System.Formats.Asn1 to 10.0.10 (fixes CI) by @ken-swyfft in #1826

Optimize Number.BitCount() on newer runtimes by @stevenaw in #1814

Implement Fluent API- IWorkbook.ForceFormulaRecalculation by @tonyqus in #1827

Implement POI Bug Github-803 - Sheet function by @tonyqus in #1828

Lazy tracker: no font access on row flush by @opencode-agent[bot] in #1829

Avoid empty custDash node in theme.xml by @tonyqus in #1831

Fixed RGBWithTint to clone StoredRGB before applying tint. by @opencode-agent[bot] in #1832

Implemented multi-range cells in NCellRange by @opencode-agent[bot] in #1838

a:txBody should be written as xdr:txBody. by @opencode-agent[bot] in #1840

Fixed CT_Double to serialize zero val attributes. by @opencode-agent[bot] in #1843

Revert "Integrate ExcelFinancialFunctions as backing engine for NPOI financial formula evaluation" by @tonyqus in #1850

Whole-column lookup references (A:A) cause O(sheet size) scans instead of O(used range) by @EmilienDup in #1846

POI Bug Github-1172: Add XWPFRun.IsRtl property by @tonyqus with @Copilot in #1851

POI Bug 68183: SXSSFWorkbook: dispose temp files automatically on Close() by @tonyqus with @Copilot in #1852

POI Bug Github-733: MIRR - align rate argument order with Excel and correct PV/FV discounting math by @tonyqus with @Copilot in #1853

SkiaSharp reference update by @tonyqus in #1856

SST streaming parser should not drop self-closing node by @tonyqus in #1863

Add XWPFTable.WidthType property by @tonyqus in #1861

Theme now saved when copied between workbooks. by @opencode-agent[bot] in #1837

Fixed #863: round seconds when no fractional seconds in format. by @opencode-agent[bot] in #1833

Update Microsoft.SourceLink.GitHub package version to fix security issue by @Nathanael-Mtd in #1866

Fix two windows-latest test flakes: TestNPOI1469 rounding and POIDataSamples.GetFile sharing mode by @ken-swyfft in #1867

Mark Microsoft.SourceLink.GitHub PrivateAssets=all so it is not a consumer dependency in the nuspec by @ken-swyfft in #1868

Bump System.Security.Cryptography.Xml from 10.0.6 to 10.0.10 by @dependabot[bot] in #1869

Use RandomNumberGenerator for encryptor ConfirmPassword(string) material generation by @tonyqus with @Copilot in #1872

Add AreaReference support for structured table references by @ken-swyfft in #1750

New Contributors

@WittgensteinHe made their first contribution in #1798

@lievendf made their first contribution in #1812

@stevenaw made their first contribution in #1815

@Nathanael-Mtd made their first contribution in #1866

@dependabot[bot] made their first contribution in #1869

Full Changelog: 2.8.0-rc3...2.8.1-rc1

2.8.06 Apr 2026

Important To ensure the long-term sustainability of this project, a monthly maintenance fee has been introduced. This fee is required to be paid by al

Release Notes
Nuget Link

What's New in 2.8.0

Important

To ensure the long-term sustainability of this project, a monthly maintenance fee has been introduced. This fee is required to be paid by all organizations or users of any library from this project who generate revenue. You can pay the fee via GitHub Sponsors.

To enact this, an EULA on binary releases is added to the repo and nuget packages that requires payment of the maintenance fee.

For more information on who must pay the fee and other frequently asked questions, please see the Open Source Maintenance Fee organisation page.

What's Changed

Add LargeExcelFileBenchmarkXSSFReaderLoad method by @tonyqus in #1701
Remove NSax to avoid potential licensing issues by @antony-liu in #1702
Add new CreateFieldRun overload method to help ease the use of creating field run by @tonyqus in #1704
Fix unable to set mutiple print area in HSSF by @Copilot in #1706
Some patches from poi by @antony-liu in #1703
Fix HSSFSheet.ShiftRows: PhysicalNumberOfRows not decreasing when shifting rows up by @Copilot in #1707
Fix phone number format: escaped dashes misidentified as grouping chars; decimal cast in special format classes by @Copilot in #1710
[Experimental] Add ToDataTable and ToDataSet feature by @tonyqus in #1705
Remove duplicate ST_OnOff definition in Math.cs by @tonyqus in #1713
Add maxRows parameter to ISheet.AutoSizeColumn method. by @tonyqus in #1716
Remove [Platform("Win")] from TestVBAMacroReader; fix AutoSizeColumn on Linux by @Copilot in #1715
Replace SixLabors.Fonts with SkiaSharp for text measurement by @Copilot in #1717
Replace SixLabors.ImageSharp with SkiaSharp by @Copilot in #1718
Upgrade SkiaSharp to 3.119.2 by @Copilot in #1719
Fix CSE array formula evaluation: count booleans in arithmetic operators by @ken-swyfft in #1720
POI Bug 66187 - MS document is error by XWPFDocument to write when XWPFRun call method getTextHightlightColor() or getEmphasisMark by @tonyqus in #1723
POI Bug 69583 - when copying cells with dates - prefer using the numeric data directly by @tonyqus in #1724
POI Bug 64986 - Match function cannot evaluate formulas with extra comma before missing optional parameter by @tonyqus in #1725
POI Bug 58468 - Implement Days function by @tonyqus in #1727
Lazy-load SharedStringsTable with streaming parser, dirty tracking, and allocation reduction by @Copilot in #1728
Add support for XDDF by @antony-liu in #1521
Add LargeSSTBenchmark by @tonyqus in #1729
Add LargeStylesBenchmark with deterministic HugeStyles.xlsx generator by @Copilot in #1730
Implement lazy loading for xl/styles.xml in XSSFWorkbook by @Copilot in #1731
Integrate XDDFChart into XSSFDrawing by @tonyqus in #1733
Some patches from poi by @antony-liu in #1711
Add unit test for bug 1712 by @tonyqus in #1739
Sheet Lazy Loading Implementation by @tonyqus in #1741
Add UseXmlReader Switch to ShardStringTable by @tonyqus in #1740
Fix Windows CI: stop TestTempFile from deleting shared temp directory by @ken-swyfft in #1746
Cache XSSFSheet.MergedRegions to eliminate repeated XML parsing by @ken-swyfft in #1744
Implement the larger I/O buffers optimization for SXSSF by @tonyqus in #1749
Perf: use Stream.CopyTo and zero-copy MemoryPackagePart reads by @ken-swyfft in #1743
Fix volatile correctness in lazy load and add roundtrip test by @ken-swyfft in #1747
Replace SortedDictionary with Dictionary in HSSFRow, XSSFRow and SXSSFRow by @tonyqus in #1753
Cache XSSFRow.FirstCellNum/LastCellNum to avoid O(n) LINQ scans by @ken-swyfft in #1745
Bump NuGetizer from 1.1.0 to 1.4.7 by @ken-swyfft in #1757
Restore sorted cell iteration order with lazy cache by @ken-swyfft in #1759
XWPFChart implementation - Phrase I by @tonyqus in #1735
Fix Rounding issue in Add, Divide and Substract by @tonyqus in #1760
Add OpenCode Agent by @tonyqus in #1761
Add AGENTS.md for AI agent and contributor orientation by @ken-swyfft in #1756
Added .NET 10 to 9 project files, pushed branch, PR creation automated. by @opencode-agent[bot] in #1763
Replace Hashtable/ArrayList with generic collections in formula eval hot path by @ken-swyfft in #1742
XLookup Function Code Sync from POI by @tonyqus in #1767
Upgrade NUnit to 4.5.1 by @tonyqus in #1768
Change CreateColumnVector to CreateRowVector by @tonyqus in #1769
Enhanced AGENTS.md with style & verification guidelines by @opencode-agent[bot] in #1764
POI Bug 63842 FractionFormat casts whole part of the value into 'int' by @tonyqus in #1726
Apply Open Source Maintainence Fee EULA to NPOI Binary release by @tonyqus in #1770
Add caching to XSSFCell numeric and rich string value access by @tonyqus in #1754
Remove Nugetizer since it always ignore PrivateAssets setting for SkiaSharp by @tonyqus in #1771
Update Github workflow by @tonyqus in #1772
Implement Area Chart based on XDDF by @tonyqus in #1773
AutoSizeRow fix for WrapText by @opencode-agent[bot] in #1774
Developer Friendly Api Implementation I by @tonyqus in #1776
POI Bug 51037 - apply default column style if no style set by @opencode-agent[bot] in #1781
Add MSBuild target to check OSMF EULA acceptance tag by @tonyqus in #1786
Fix 256× unit mismatch in WrapText auto-row-height calculation by @Copilot in #1790

New Contributors

@opencode-agent[bot] made their first contribution in #1763

Full Changelog: 2.7.6-rc1...2.8.0-rc3

Open source →

Additional notes

tonyqus started this conversation in Release Notes

NPOI 2.8.0 Release Notes #1751

tonyqus

Mar 23, 2026 · 1 comment

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Open source →

2.7.627 Feb 2026

Fix few issues in autofilterrecord serialization / cloning by @En3Tho in #1643

Release Notes
Nuget Link

What's Changed

Fix few issues in autofilterrecord serialization / cloning by @En3Tho in #1643
Poi bug 61532 & 61148 by @antony-liu in #1645
Upgrade to NUKE 10 and use NET 10 SDK by @lahma in #1664
Fix: Add oldStr to StringBuilder before Remove operation in Replace by @ZagidullinRuslanG in #1656
Some patches from poi by @antony-liu in #1644
POI bug 61516, 58068 & 61630 by @antony-liu in #1649
Poi bug 61528,61349, 60737, 59747 by @antony-liu in #1647
Added start and end enum values to ST_Jc by @kemsky in #1665
XWPF ooxml always writes rotWithShape attribute by @modeverv in #1658
fix issue #1667, avoid null reference exception when shift rows with picture by @antony-liu in #1672
Fix issue #1654, if XSSFWorkbook stream position is greater than zero, FileMagic.ValueOf returns the correct value by @antony-liu in #1673
CT_TableStyleElement.dxfIdFieldSpecified should be false if no dxfId attribute exists by @tonyqus in #1676
Added the encryption support for xls, xlsx and xlsm by @manisocgen in #1659
Patches from poi 4.0 by @antony-liu in #1674
Update BouncyCastle.Cryptography to 2.6.2 by @tonyqus in #1686
POI Bug 69720 Paragraph alignment value defaults to left, null not allowed by @tonyqus in #1687
POI Bug 66260 Add XWPFRun.NumberOfTexts property by @tonyqus in #1688
Support Wdp in XWPF and POI Bug 66988 by @tonyqus in #1689
POI Bug 66347 add XWPFTheme support to XWPFDocument by @tonyqus in #1690
POI Bug Github-950 - Fix NPE in XWPFParagraph.getCTSpacing by @tonyqus in #1691
POI Bug Github-672 XWPF: support removing style by pos and getting all XWPFStyle list by @tonyqus in #1692
POI Bug 66079 - fix issue with XWPFNumbering.removeAbstractNum by @tonyqus in #1693
POI Bug 66080 - XWPFNumbering.addAbstractNum uses abstract numberings count as id by @tonyqus in #1694
Performance Optimization: Optimize writing to StreamWriter by @apetukhov in #1681
POI Bug Github 170 - XWPFTableCell does not process bodyElements when handle paragraph by @tonyqus in #1696
Implement reading custom property from office metadata xml file by @tonyqus in #1700
Implement ISheet.Cells[] and ISheet.Rows[] by @tonyqus in #1695
Replace Regex.Match with Regex.IsMatch by @antony-liu in #1698

New Contributors

@En3Tho made their first contribution in #1643
@ZagidullinRuslanG made their first contribution in #1656
@modeverv made their first contribution in #1658
@manisocgen made their first contribution in #1659

Full Changelog: 2.7.5-rc1...2.7.6-rc1

Open source →

2.7.530 Sept 2025

Patches from poi v3.17 by @antony-liu in #1595

Nuget link
Release Notes

What's Changed

Patches from poi v3.17 by @antony-liu in #1595
Port poi bug 61354 & 61363 by @antony-liu in #1597
Ensure SpreadsheetVersion is set for AreaReferences by @antony-liu in #1587
Some patches from poi 3.17 by @antony-liu in #1600
POI bug 61470 and 61381 by @antony-liu in #1601
Bug 61431 - Conditional formatting evaluation ignores undefined cells by @antony-liu in #1598
XWPF POI Bug #55953, #62859 & #63788 Migration by @antony-liu in #1604
Fixes #1608, adds support for multiple alternate content sections by @kemsky in #1609
Fixed export of chart separator value to xlsx by @A6blpka in #1612
Call GetColumnHelper() to make sure columnHelper is initialized by @tonyqus in #1615
Fix SortCondition XML to match spec rules by @brandscill in #1618
Add support for embedded object extractor by @antony-liu in #1607
Add XSSF eventusermodel support by @antony-liu in #1620
Allow adding and removing HyperlinkRun and FieldRun by @tonyqus in #1625
Fix test cases TestAllNumberToText and TestReadWriteTokenValueBytes by @antony-liu in #1624
HPSF improvement and bug fixes by @antony-liu in #1622
xlsb support for reading of xlsb files by @antony-liu in #1632
implement XWPFParagraph.ChangeOrientation by @tonyqus in #1635
Encode formula string while double quotes are added before and after by @tonyqus in #1640

New Contributors

@kemsky made their first contribution in #1609
@A6blpka made their first contribution in #1612
@brandscill made their first contribution in #1618

Full Changelog: 2.7.4-rc3...2.7.5-rc1

Open source →

2.7.429 Jun 2025

Update NUnit Version to 4.3.2 by @tonyqus in #1517

Nuget Link
Release Notes

What's Changed

Update NUnit Version to 4.3.2 by @tonyqus in #1517
Fix Unit Test Failures on Windows build server by @tonyqus in #1518
Enable recommended NET analyzers and suppress errors by @lahma in #1523
Remove prefixes from cref tags by @lahma in #1527
Fix analyzer reported issues related to string usage by @lahma in #1528
Fix dictionary usage related analyzer problems by @lahma in #1526
Make non-public API methods static where applicable by @lahma in #1531
Some patches from poi 3.17 by @antony-liu in #1520
Add support for bar grouping in bar and column charts by @mostmand in #1533
Remove zero-length array allocations and use collection expression by @lahma in #1530
Use ZString StringBuilder to replace System.Text.StringBuilder by @LessIsMoreInSZ in #1542
Use NET 9 SDK in GitHub Actions to compile solution by @lahma in #1544
Fix analyzer reported issues by @lahma in #1541
Fix XWPFDocument FindAndReplaceTextInParagraph by @Kazbek in #1524
Account for image resolution units other than pixels per inch by @bmlpg in #1519
Fix pattern formatting - return correct field for pattern fill foreground by @plpolak in #1543
Some patches from poi by @antony-liu in #1540
Add InsertNewHyperlinkRun method, and fix InsertNewRun and RemoveRun methods by @bmlpg in #1535
Fix analysis errors related to non-concrete type usage by @lahma in #1547
Some patches from poi v3.17 by @antony-liu in #1552
Patches from poi 3.17 by @antony-liu in #1553
Add XWPFTable.NumberOfColumns by @tonyqus in #1555
Remove unnecessary array allocations for Split etc by @lahma in #1549
Update some ToString functions by @TimLee88 in #1559
Read label options only if label length > 0 by @igitur in #1563
Added Copy Charts to Sheet.CopyTo by @gas162 in #1556
Patches from poi 3.17 by @antony-liu in #1557
Update Dependency libraries by @tonyqus in #1566
Only add dependency to Cryptography.Pkcs when needed by @lahma in #1570
Implement ICellStyle.ReadingOrder by @tonyqus in #1574
Remove System.Security.Cryptography.Pkcs by @thompson-tomo in #1572
XSSFChart axis enhancement by @antony-liu in #1569
Remove unnecessary BOM character generated in SXSSF SheetDataWriter by @tonyqus in #1575
Escape special characters in formula1 and formula2 node of datavalidation entity by @tonyqus in #1577
Fix CT_Point2D xml node prefix issue by @tonyqus in #1578
bug-65915 add test for 'OR' function by @antony-liu in #1579
Some patches from poi 3.17 by @antony-liu in #1580
Patches from poi 3.17 by @antony-liu in #1584
Patches from poi 3.17 by @antony-liu in #1589
Patches from poi v3.17 by @antony-liu in #1590
Update Version to 2.7.4 by @tonyqus in #1591
If ubuntu-latest passes, it should include the publish file by @tonyqus in #1593

New Contributors

@mostmand made their first contribution in #1533
@LessIsMoreInSZ made their first contribution in #1542
@Kazbek made their first contribution in #1524
@bmlpg made their first contribution in #1519
@plpolak made their first contribution in #1543
@igitur made their first contribution in #1563
@gas162 made their first contribution in #1556
@thompson-tomo made their first contribution in #1572

Full Changelog: 2.7.3-rc1...2.7.4-rc3

Open source →

2.7.323 Mar 2025Deprecated

Refactor some hpsf classes, deprecate Mutable* property classes by @antony-liu in #1479

Nuget link
Release Notes

What's Changed

Fix Clone sheet when the sheet contains hyperlinks by @tonyqus in #1441
Port POI patches by @antony-liu in #1434
Poi bug 60605: convert Workbook.SHEET_STATE_* to SheetVisibility enum by @antony-liu in #1446
[FluentAPI] Return ICell type for SetXXX methods of ICell interface by @tonyqus in #1450
poi bug 60031: DataFormatter parses months incorrectly when put at the end of date segment. by @antony-liu in #1447
bug 59227: parse dates formatted in Japanese or Chinese. by @antony-liu in #1456
poi: #60626 - ArrayIndexOutOfBoundsException in EvilUnclosedBRFixingInputStream by @antony-liu in #1451
POI Bug #56822 fix COUNTIFS() by @antony-liu in #1461
Update Unit tests from .NET 6 to .NET 8 by @tonyqus in #1476
Some patches from poi 3.16 by @antony-liu in #1463
Poi bug 51519 and 45353 by @antony-liu in #1464
Upgrade to NUKE 9 and replace obsolete NET 6 targets with NET 8 by @lahma in #1482
fix: avoid corrupting docx file with comments by @antony-liu in #1486
Patches from poi 3.16 by @antony-liu in #1477
Add test case for issue #1057 by @antony-liu in #1488
[POI 66093 & POI 62373] Support FREQUENCY function and subfunctions to SUBTOTAL function by @antony-liu in #1492
Fix int overflowing in ExcelGeneralNumberFormat by @Many-sun in #1497
Inconsistent formatting when reading multiple XLS files concurrently (#1469) by @Vemahk in #1470
Use TryGetValue instead of ContainsKey and indexing by @lahma in #1500
Update SixLabors.ImageSharp package to 2.1.10 by @AdaskoTheBeAsT in #1505
Fixes #1472. Optimize CT_Row.Copy to reduce row cloning time under 1ms by @mysoftlab in #1473
Use Array.Empty instead of allocating an empty array by @lahma in #1502
Fix ShiftMergedRegions by @TimLee88 in #1462
Add readonly modifier for suitable fields by @lahma in #1501
Implement GetCells interface for ISheet by @tonyqus in #1460
POI 66090 add support for D* functions by @antony-liu in #1504
Seal private and internal types by @lahma in #1508
Refactor some hpsf classes, deprecate Mutable* property classes by @antony-liu in #1479
Replace casts with pattern variable by @lahma in #1509
Reduce warning output during build and treat new warnings as errors by @lahma in #1513
Update build version to 2.7.3 by @tonyqus in #1515

New Contributors

@Many-sun made their first contribution in #1497
@Vemahk made their first contribution in #1470
@AdaskoTheBeAsT made their first contribution in #1505
@mysoftlab made their first contribution in #1473

Full Changelog: 2.7.2-rc1...2.7.3-rc1

Open source →

2.7.29 Nov 2024

UnhandledDataStructure should sanity check before allocating, not after by @tohidemyname in #1377

Nuget
Release notes

What's Changed

UnhandledDataStructure should sanity check before allocating, not after by @tohidemyname in #1377
Fixing wrong logging message by @tohidemyname in #1375
ByteArrayOutputStream is not disposed in IOUtils.ToByteArray method by @guangyu2002 in #1389
Fix EncodeUtf method by @yzhoholiev in #1387
fixing a NPE in GetSymbolFont by @tohidemyname in #1374
FindAndReplaceText will now also work for tables within a documents h… by @iain-mcandrew in #1391
Remove System.Configuration.ConfigurationManager as NuGet dependency by @lahma in #1400
Convert to use Central Package Management by @lahma in #1390
Upgrade SixLabors.ImageSharp to version 2.1.9 by @lahma in #1402
fix: AddStyleClass no update newClassValue by @wuzxc1230123 in #1407
fix: Inconsistent new lines in worksheets by @wuzxc1230123 in #1408
maxRows is usefull for AutoSizeColumn and GetColumnWidth by @PatriceDargenton in #1403
Upgrade to NUKE 8.1 by @lahma in #1414
Backport commits that fix rate function giving incorrect results by @superrnovae in #1286
Added support for \n in text elements by @pbvs in #1346
More patches ported from poi v3.16 by @antony-liu in #1371
fixing a type error by @tohidemyname in #1376
bugfix: ExcelToHtmlConverter throw exception when cell has background… by @chen1tian in #805
Fix checking if cell style is set by @Bykiev in #1429
fix: Make test case TestSumif.TestMicrosoftExample1 passed by @antony-liu in #1432
Update version of System.Security.Cryptography by @tonyqus in #1430
fix unit test failures by @tonyqus in #1431
fixing an error in adobe meta by @tohidemyname in #1379
fixed SXSSFWorkbook can not clear temp files when it called Dispose() on the IWorkbook interface. by @houlongchao in #1385
Patches from poi by @antony-liu in #1433
Reduce array allocations by usage MemoryStream.GetBuffer() instead of ToArray() by @lechu445 in #1435
XSSFColumn class implementation by @artemkoloskov in #1329

New Contributors

@tohidemyname made their first contribution in #1377
@guangyu2002 made their first contribution in #1389
@yzhoholiev made their first contribution in #1387
@iain-mcandrew made their first contribution in #1391
@wuzxc1230123 made their first contribution in #1407
@chen1tian made their first contribution in #805
@lechu445 made their first contribution in #1435
@artemkoloskov made their first contribution in #1329

Full Changelog: 2.7.1-rc1...2.7.2-rc1

Open source →