docs

Release Notes

---

English | 简体中文 | 繁體中文

---

Your Star and Donate can make MiniExcel better

---

1.34.0

• [New] Add freeze panes (#626) (via @meld-cp)
• [New] Add DateTime Nullale support (via @jiaguangli)
• [OPT] Reduce memory requirements when processing templates + template formulas (#638) (via @meld-cp)
• [Bug] Fix problem with multi-line when using Query (#628) (via @meld-cp)
• [Bug] Fix empty data reader issue. (#629) (via @duszekmestre)
• [Bug] Fix Fields of type long cannot be set to text normally #627 (via @shps951023)

1.33.0

• [New] Support Template formulas (#622) (via @meld-cp)
• [New] Update DynamicConfiguration format (#595) (via @wangboshun)
• [OPT] CSV enumeration and code reusage (#600) (via @duszekmestre)
• [OPT] 1900 year DateTime correction #599 (via @duszekmestre)

1.32.1

• [New] .NET5^ support image ReadOnlySpan<byte> (via @shps951023)
• [Bug] Remove bug with Portable.System.DateTimeOnly and only support DateOnly .NET6^ #594 (via @shps951023)

1.32.0

• [New] Using DynamicConfiguration when writing data using DataTable (via @pszybiak)
• [New] Make System.DateOnly available as date in Excel (#576) (via @ofthelit)
• [New] Allow ampersand in sheet names (via @ofthelit)
• [OPT] Use true async processing for excel writer (#573) (via @duszekmestre)
• [Bug] Fix nullable enumeration conversion failure #567) (via @PurplestViper)
• [Bug] IEnumerable traversed twice #422 (via @Discolai)
• [Bug] Fix Read empty string as null (via @pszybiak)
• [Bug] Fix CSV Reader Query faild on specific xlsx file, throws ExcelColumnNotFoundException (via @AZhrZho)
• [Bug] Fix DynamicExcelColumn configuration while saving IDictionary values (via @johannes-barta)
• [Bug] Fix propInfo.Key missing (via @shps951023)
• [Bug] Fix sharedStrings ref #549 (via @shps951023)

1.31.3

• [Bug] DescriptionAttr null check(via @wulaoh)
• [Bug] Throw custom exception when CSV column not found #543 (via @pszybiak)
• [Bug] SaveAsByTemplate rowInfo.IEnumerableMercell.Height null exception #553 (via @shps951023)

1.31.2

• [New] Support automatic merge for same vertical cells between @merge and @endmerge tags (via @eynarhaji)
• [New] Limit merge tagged columns with @mergelimit column. First merge limited column and then merge other columns accordingly. (via @eynarhaji)
• [New] Support dynamic columns when generating sheet by IDataReader to change columns names & widths #514 (via @Laxynium)
• [Bug] Fix R1C1 reference to A1 reference bug (via @ivan132)

1.31.1

• [OPT] Support property cache #23 (via @RRQM_Home)

1.31.0

• [New] Support Fields #490 (via @jsgervais)
• [New] Support skipping null values when writing to Excel #497 (via @0MG-DEN)
• [Bug] Fix calc chain.xml #491(via @ArgoZhang)
• [Bug] Support some sheet /xl location error #494 (via @ArgoZhang)

1.30.3

• [New] support if/else statements inside cell (via @eynarhaji)

1.30.2

• [New] support grouped rows (via @eynarhaji)
• [New] support automatic merge for same vertical cells (via @eynarhaji)

1.30.1

• [New] support function to custom separator (via @hyzx86)
• [New] support config for get sheet names (via @H4ad)

1.30.0

• [New] Remove .NET 5.0 support
• [New] support excel enum description string to enum #289 (via @KaneLeung)

1.29.0

• [New] SaveAs support FastMode
• [Bug] Fixed SaveAs OOM problem

1.28.2

• [New] Support Assembly Strong Name Signature #450
• [New] Support QueryRange (via @1ras1)

1.28.1

• [Optimization] Reduce string memory allocation when template save #439 (via @cupsos)
• [Optimization] Remove dependency System.Memory #441 (via @ping9719)

1.28.0

• [New] Support CSV Insert #I4X92G (via @shps951023)

1.27.0

• [New] Support DateTimeOffset and ExcelFormat #430 (via @Lightczx , @shps951023 )
• [Optimization] SaveAs by datareader support dimension #231 (via @shps951023)

1.26.7

• [OPT] Reduce memory allocation when using MemoryStream #427 (via @cupsos)
• [OPT] Add System.Memory pacakge #427 (via @cupsos)
• [OPT] Reduce memory allocation in GetImageFormat() #427 (via @cupsos)
• [Bug] Fixed MiniExcel.SaveAsByTemplate error when value is List<Dictionary<string, object>> #413 (via @shps951023)

1.26.6

• [OPT] Template save performance #425 (via @lileyzhao)

1.26.5

• [New] Added DataReader AutoFilter toggle #402 #401 (via @Rollerss)
• [New] SaveAs support empty sharedstring #405

1.26.4

• [Bug] Using stream.SaveAs will close the Stream automatically when Specifying excelType
• [OPT] Optimize Query big file _IntMappingAlphabet.Count hot loading count (#400 via @CollapseNav)

1.26.3

• [OPT] Export default buffersize from 1024 bytes -> 1024 * 512 bytes
• [New] Export support custom buffersize
• [New] SaveAsByTemplate number use InvariantCulture (via @psxbox)

1.26.2

• [Bug] Fixed DynamicColumnAttribute Ignore, Index error #377

1.26.1

• [New] DynamicColumnAttribute support Dictionary #370
• [Bug] Fixed MiniExcelDataReader SqlBulkCopy error (via @yfl8910)

1.26.0

• [New] Support DynamicColumnAttribute (via @y976362357, @shps951023)
• [New] Support ExcelColumnAttribute to merge attributes (#357 via @Weilence)
• [OPT] Only when necessary system will converts ExpandoObject type (#366 via @isdaniel)
• [OPT] Optimize startsWith & EndWith performance (#365 via @isdaniel)

1.25.2

• [New] Remove overdue ExcelNumberFormat Dependency #271

1.25.1

• [Bug] Fixed QueryAsDataTable read big file will throw NotImplementedException #360

1.25.0

• [New] Support SharingStrings disk cache (when this file size >= 5 MB), it can reduce reading 2GB SharingStrings only needs 1~13 MB memory #117(#346 via @Weilence) (via @shps951023)
• [New] Async support cancellationToken (#350 via @isdaniel)
• [New] SaveAs support overwriteFile parameter for enable/unable overwriting exist file #307
• [Bug] SaveAs by datareader, sometime it will add one more autoFilter column #352

1.24.3

• [Bug] Fixed multiple threads Async error 'The given key N was not present in the dictionary' #344
• [Bug] Fixed when CultureInfo likesff-Latn , datareader field type is datetime that will get error OA Date format #343

1.24.2

• [Bug] Fiexd Query multiple same title will cause startcell to get wrong column index #I4YCLQ
• [OPT] Optimize Query algorithm

1.24.1

• [Bug] Fiexd QueryAsync configulation not working #338
• [Bug] Fixed QueryAsync not return dynamic type

1.24.0

• [New] Query support strict open xml, thanks Weilence (Lowell) #335
• [New] SaveAs use the configured CultureInfo to write format cell value, thanks 0xced (Cédric Luthi) #333
• [New] SaveAsByTemplate default ignore template missing parameter key exception, OpenXmlConfiguration.IgnoreTemplateParameterMissing can control it. #I4WXFB
• [New] SaveAsByTemplate will clean template string when parameter is IEnumerable and empty collection. #I4WM67

1.23.3

• [Bug] SaveAs CSV when value is DataTable, if Key contains " then column name will not show "。 #I4WDA9

1.23.2

• [New] Support System.ComponentModel.DisplayName's [DisplayName] as title #I4TXGT
• [Bug] Fix when CultureInfo like Czech will get invalid output with decimal numbers #331

1.23.0

• [New] Support GetReader method #328 #290 (Thanks 杨福来 Yang )

1.22.0

• [New] SaveAs support to custom CultureInfo #316
• [New] Query support to custom CultureInfo #316
• [New] New efficiency byte array Converter #327
• [Breaking Change] Remove Byte Array to base64 Converter
• [Breaking Change] Replace ConvertByteArrayToBase64String by EnableConvertByteArray

0.21.5

• [Bug] Fix SaveAs multiple sheet value error "Excel completed file level validation and repair. Some parts of this workbook may have been repaired or discarded." #325

0.21.4

• [New] Remove LISENCE_CODE check

0.21.1

• [New] Check License Code

0.21.0

• [New] ExcelFormat support DateTimeOffset/Decimal/double etc. type format #I49RZH #312 #305
• [New] Support byte file import/export
• [New] SaveAs support to convert byte[] value to base64 string
• [New] Query support to convert base64 value to byte[]
• [New] OpenXmlConfiguration add ConvertByteArrayToBase64String to turn on/off base64 convertor
• [New] Query support ExcelInvalidCastException to store column, row, value data #309

0.20.0

• [New] SaveAs support image #304
• [Opt] Improve SaveAs efficiency

0.19.3-beta

• [Fix] Excelnumberformat 1.1.0 valid date expired (Valid from: 2018-04-10 08:00:00 to 2021-04-14 20:00:00) link

0.19.2

• [New] SaveAsByTemplate support datareader #I4HL54

0.19.1

• [New] QueryAsDataTable remove empty column keys. #298
• [Bug] Error NU3037: ExcelNumberFormat 1.1.0 #302
• [Bug] Prefix and suffix blank space will lost after SaveAs #294

0.19.0

• [New] SaveAs default style with autoFilter mode. #190
• [New] Add ConvertCsvToXlsx、ConvertXlsxToCsv method. #292
• [New] OpenXmlConfiguration add AutoFilter property.
• [Bug] Fix after CSV Query then SaveAs system will throw "Stream was not readable." exception. #293
• [Bug] Fix SaveAsByTemplate & convert to & I4DQUN

0.18.0

• [New] SaveAs support enum description #I49RYZ
• [New] Query strong type support multiple column names mapping to the same property. #I40QA5
• [Breaking Change] SaveAs by empty IEnumerable will generate header now empty rows now. #133
• [Bug] SaveAs sheet enum mapping cell number type #286

0.17.5

• [Bug] Fix xlsx file header column name with &,<,>,",', the file cannot be opened.

0.17.4

• [Bug] Fix v0.17.3 SaveAs xlsx file will cause "XML error : Catastrophic failure"

0.17.3

• [New] Support set column width #280
• [Bug] Fix csv not support QueryAsDataTable #279
• [OPT] Clearer exception message when file is illegal excel zip format. #272

0.17.2

• [Bug] Fix v0.16.0-0.17.1 custom format contains specific format (eg:#,##0.000_);[Red]\(#,##0.000\)), automatic converter will convert double to datetime #267

0.17.1

• [New] Add QueryAsDataTableAsync(this Stream stream..)
• [OPT] More clear strong type conversion error message #I3X2ZL

0.17.0

• [New] Support Async/Task #52, contributor: isdaniel ( SHIH,BING-SIOU)

0.16.1

• [New] SaveAsByTemplate support DateTime custom format #255, contributor: 网虫 (landde) - Gitee.com

0.16.0

• [New] Query support custom datetime format mapping datetime type #256
• [Bug] Fix Query call convertValueByStyleFormat method repeatedly, cause waste of resources #259

0.15.5

• [Bug] Chinese env datetime format InvalidCastException #257

0.15.4

• [Breaking Change] Set CSV Reader/Writer default encoding : UTF-8 => UTF-8-BOM
• [Breaking Change] Rename CsvConfiguration GetStreamReaderFunc => StreamReaderFunc
• [New] Csv SaveAs support custom StreamWriter

0.15.3

• [New] Csv SaveAs support datareader

0.15.2

• [New] Support Custom Datetime format #241
• [Bug] Csv type mapping Query error "cannot be converted to xxx type" #243
• [Bug] No error exception throw when reading xls file #242
• [Breaking Change] Stream cannot know the file type, please specify ExcelType manually

0.15.1

• [Bug] Fix Sheetxml writer error, it contains two ">" #240

0.15.0

• [New] SaveAs change default style and provide style options enum #132
• [New] Support SaveAs by DataSet #235

0.14.8

• [Bug] Fix csv Query split comma not correct #237 #I3R95M
• [Bug] QueryAsDataTable type check problem, e.g A2=5.5 , A3=0.55/1.1 will case double type check error #233

0.14.7

• [New] SaveAs Support Create Multiple Sheets
• [Breaking Change] Change GetSheetNames type IEnumerable -> List

0.14.6

• [Bug] Fix SaveAs by datareader error "Invalid attempt to call FieldCount when reader is closed" #230

0.14.5

• [Breaking Change] Rename OpenXmlConfiguration FillMergedCells

0.14.4

• [New] Query support Fill Merged Cells Down #122
• [Bug] Fix QueryAsDataTable error "Cannot set Column to be null" #229

0.14.3

• [Opt] Support Xlsm AutoCheck #227
• [Bug] Fix SaveAsByTemplate single column demension index error #226

0.14.2

• [Bug] Fix asp.net webform gridview datasource can't use QueryAsDataTable #223

0.14.1

• [Bug] Fix custom m/d format not convert datetime #222

0.14.0

• [New] Query、GetColumns support startCell #147
• [New] GetColumns support read headers

0.13.5

• [New] Support QueryAsDataTable method #216
• [New] SaveAs support IDataReader value parameter #211
• [Bug] Fix numeric format string will be cast to numeric type #I3OSKV
• [Opt] Optimize SaveAs convert value type logic to improve performance

0.13.4

• [Changed] DataTable use Caption for column name first, then use columname #217
• [New] Type Query support Enum mapping #89
• [OPT] Optimize stream excel type check #215

0.13.3

• [New] Support open with read only mode, avoid error of The process cannot access the file because it is being used by another process #87
• [Breaking Change] Change CSV SaveAs datetime default format : "yyyy-MM-dd HH:mm:ss"
• [Bug] Fixed SaveAsByTemplate when merge cells will cause collection rendering error #207
• [Bug] Fixed MiniExcel.SaveAs(path, value,sheetName:"Name"), the actual sheetName is Sheet1

0.13.2

• [Bug] Fix Column more than 255 rows cannot be read error #208

0.13.1

• [New] SaveAsByTemplate by template bytes, convenient to cache and support multiple users to read the same template at the same time #189
• [New] SaveAsByTemplate support input IEnmerable<IDicionary<string,object>> or DapperRows or DataTable parameters #201
• [Bug] Fix after stream SaveAs/SaveAsByTemplate, miniexcel will close stream #200

0.13.0

• [New] Support .NET Framework 4.5
• [Bug] Fix template excel that with namespace prefix will cause parsing error #193
• [OPT] Optimize template paresing performance

0.12.2

• [Bug] Template concating cell value type problem #179
• [Bug] Template fix non-nullable numeric type cell type is 'str' #180

0.12.1

• [OPT] Optimize performance of filling excel
• [OPT] Template IEnumerable generate support type auto mapping (Issue #177)
• [New] Support GetColumns method #174
• [New] Template support $rowindex keyword to get current row index
• [Bug] Dimension without x prefix #175

0.12.0-beta

• [New] Support Filling Excel by SaveAsByTemplate method to fill data into excel by xlsx template

0.11.1

• [New] Support ColumnIndex Attribute #142 & #I3I3EB
• [Bug] Fix issue #157 : Special conditions will get the wrong worksheet name
• [Update] issue #150 : SaveAs input IEnuerable should throw clear msg exception

0.11.0

• [New] Added GetSheetNames method support multi-sheets Query
• [New] Query support by sheet name
• [New] Csv SaveAs support DataTable/Dictionary parameters
• [New] CsvConfiguration support custom newLine & seperator & GetStreamReaderFunc
• [OPT] Optimize SaveAs/Query excel file type auto-check

0.10.3(Don't use this version)

• [Bug] Fix Query SharedStrings control character not encoding (issue Issue #149)

0.10.2(Don't use this version)

• [Bug] Fix SharedStrings get wrong index (issue #153)
• [Bug] SaveAs support control character encoding (issue Issue #149)

0.10.1(Don't use this version)

• [New] SaveAs support POCO excel column name/ignore attribute

0.10.0(Don't use this version)

• [New] Query dynamic with first head will ignore blank/whitespace columns
• [New] Query type mapping support Custom POCO excel column name/ignore attribute

0.9.1(Don't use this version)

• [Bug] Solve cannot convert Cell value to Nullable (issue #138)

0.9.0(Don't use this version)

• [Bug] Solve System.IO.Compression referencing twice (issue #97)
• [Bug] StrongTypeMapping Query empty row will be generated repeatedly

0.8.0(Don't use this version)

• [New] Add MiniExcel.Query by file path method

0.7.0(Don't use this version)

• Optimize SaveAs logic
• [Breaking Change] SaveAs value parameter change type check logic

0.6.0(Don't use this version)

• [New] SaveAs support parameter IEnumerable deferred execution
• [Breaking Change] Remove SaveAs by object, now only support Datatable,IEnumerable,ICollection
• [Bug] Fix empty rows generate excel error (issue: #128)

0.5.0(Don't use this version)

• [New] Support OpenXml Xlsx SaveAs writer mode that avoids OOM
• [Breaking Change] Remove SaveAs startCell parameter
• [Bug] Fix SaveAs dimension printHeader:true not correct

0.4.0(Don't use this version)

• [New] Support create CSV by file path or stream
• [New] Support csv custom configuration setting
• [New] Support auto/manual specify excel type (xlsx or csv)
• [Breaking Changes] Remove Query First/FirstOrDefault/Single/SingleOrDefault, user can use LINQ method do it.

0.3.0(Don't use this version)

• [New] Support SaveAs by IEnumerable of DapperRow and IDictionary<string,object>
• [New] Support dynamic query timespan style format mapping to timespan type.

0.2.3(Don't use this version)

• [Bug] Fix ShMemory leak and static problem.
• [New] Support style datetime format mapping to datetime type.

0.2.2(Don't use this version)

• SavaAs support xl/sheet dimension
• [Breaking Changes] SaveAs value type from object to DataTable & ICollection
• [Bug] Fix ICollection with type but no data error (https://github.com/shps951023/MiniExcel/issues/105)

0.2.1(Don't use this version)

• [Optimize] Optimize type mapping bool and datetime auto check
• [New] Query Support xl/worksheets/Sheet Xml Xml <c> without r attribute or without <dimension> but <c> with r attribute, but now performance is slow than with dimension ()

0.2.0(Don't use this version)

• Release to nuget.org

0.1.0-preview(Don't use this version)

• [New] Add Query strongly typed mapping
• [New] Add QueryFirstOrDefault、QuerySingle、QuerySingleOrDefault

0.0.7-beta(Don't use this version)

• [New] Add QueryFirst method

0.0.6-beta(Don't use this version)

• [Breaking Changes] Replace Create by SavaAs

0.0.5-beta(Don't use this version)

• Release remove assembly: InternalsVisibleTo

0.0.4-beta(Don't use this version)

• [New] Support SaveAs Stream

0.0.3-beta(Don't use this version)

• [New] Support Query dynamic and IEnumrable Deferred Execution to avoid OOM
• [New] MiniExcelHelper.Create value type change to ICollection
• [New] Encode XML Value ' " > < &
• [New] Check Multiple Sheet Index Order
• [New] Dynamic Query support A,B,C.. column name key
• [New] Support insert empty Rows between rows

0.0.2-beta(Don't use this version)

• [New] Add MiniExcelHelper.Read Method
• [Breaking Changes] Remove System.IO.Packaging.Package Dependency, and replaced by System.IO.Compression.ZipArchive

0.0.1-beta(Don't use this version)

• [New] Add MiniExcelHelper.Create

0.0.0

• Init