Epplus Vs Exceldatareader

2 Adds the new C#5 async features for. Download Test Project. It is recommended to use NuGet through the VS Package Manager Console Install-Package or using the VS "Manage NuGet Packages" extension. Excel 라이브러리를 사용하지 않고 어떻게이 작업을 수행 할 수 있습니까?. This article shows how to import and export csv data in an ASP. X Object Library, located in the COM tab of the Reference Manager. How to import Excel file to DataTable in C# and VB. Builds on top of EPPlus, ExcelDataReader and AutoMapper, adding POCO. ExcelDataReader github. 聽說EPPlus讀寫Excel檔寫法較簡潔,用了後真的感覺不錯. EPPlus is a very helpful open-source 3rd party dll for exporting data to excel. This type implements the IDisposable interface. Cross-platform on Linux and Windows Docker Containers, powered by. Compatible with net20, net45, netstandard1. Visual Studio - The Power of NuGet (Installation Of NuGet Extension) 4 thoughts on " Reading And Writing CSV Files In ASP. When you have finished using the type, you should dispose of it either directly or indirectly. Core as EPPlus didn’t have. For this, I use ExcelDataReader. 2 个回复 - 153 次查看. Install the ExcelDataReader. 2 Adds the new C#5 async features for. Spreadsheet Free is a free. 后来就自然而然的接触到了Nuget,用了几次后发现真好用,就拿上面的例子来说,只要在项目中安装Newtonsoft. Here Mudassar Ahmed Khan has explained how to write (insert) data to Excel file Sheet (. VSTO: как заставить Visual Studio запустить новый экземпляр Excel Автоматическое заполнение строк в соответствии с другим содержимым ячейки Переупорядочить таблицу в Excel Не удалось извлечь. 0 のα版がリリースされました。 NPOIは現在 1. The console application uses the EPPlus package in the Repository to generate the Byte Stream and output SQL Server data into a MultiSheet Excel File. It offers a different variety of features and allows users to manage, format, organize and calculate data in a spreadsheet system. Office Interop needs Excel driver to be installed on the machine which is using it. Convert Excel tables to HTML using "Save as Web Page" option Using this method you can save an entire workbook or any portion of it, such as a selected range of cells or chart, to a static web page (. 5 projects AsyncCTP 0. Then I test samples from EPPlus and are faster than my approach so I think in use EPPlus instead of Microsoft. VBA删除命名范围。 获取#NAME? Excel VBA中的条件格式使用格式条件中的当前月份和年份值 使用Excel包库将图像添加到Excel中 Excel:返回不同表格中相同单元格的结果 Excel VBAfunction识别只读模式 条件格式 – 如何设置“每行一个条件”的范围?. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. 聽說EPPlus讀寫Excel檔寫法較簡潔,用了後真的感覺不錯. Like in the case of reading, the Open XML SDK provides two approaches for writing Open XML files: 1. An essential tool for any modern development platform is a mechanism through which developers can create, share, and consume useful code. Access Protected Excel File with ExcelDataReader. net library that reads and writes Excel 2007/2010 files using the Open Office Xml format (xlsx). follow us on twitter @expandframework or simply Star/watch this repository and get notified from GitHub and its verbose RSS feeds. The Excel table contains 2 rows with about 6 lines filled up. 0} A package including the NUnit TestAdapter for Visual Studio 2012/13/15. We could iterate the rows using INSERT statement, but there is an easier way. Create advanced Excel spreadsheets using. Spreadsheet is a. 0 EPPlus是一个使用Office Open XML格式(xlsx)读取和写入Excel文件的. 2 个回复 - 153 次查看. 0 has introduced many new features along with neat coding. In previous versions of ASP. Here Mudassar Ahmed Khan has explained how to write (insert) data to Excel file Sheet (. You can use the C# methods provided in this tutorial for reading an excel file for your own C# projects. In fact, many such popular libraries lacked support for. A library for Excel export/import. Our customers often have to import data from very simple Excel *. At several places the remark "2do" indicates an incomplete section of the documentation. Example Excel table: //ID Name Display Order Active //1 John 1 1 ID, DisplayOrder and Active columns are read as double, so I have to convert them to long, int and bool types respectively. CodeLineage - Easy access to a cumulative diff view between file revisions (supports svn, git, mercurial, perforce). NET core support. This is a collection of DataTables. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. 2 was also released. Bonus points if someone can answer this question for the EPPlus package as well. FileInfo finfo; Excel. This project has been started in June 2001 and is still in progress. In previous versions of ASP. EPPlusはOpen Office Xml形式(xlsx)を使用してExcel 2007/2010ファイルを読み書きする. 3 Lightweight and fast library written in C# for reading Microsoft Excel files ('97-2007). Methods for Exporting Data to Excel "Number" tab, and then select "Text" from the Category box and click on [OK]. 概要 Excelファイルを読み込んだ時に、空欄のセルがNullになる場合と空文字になる場合がありまして、これが原因のバグを埋め込んでしまいました。. Builds on top of EPPlus, ExcelDataReader and AutoMapper, adding POCO. Writing Large Datasets to Excel Files Using EPPlus in C# Recently, I had to resolve an issue of a corrupt report file of an enterprise application in production. Una vez que JET decide sobre el tipo, se adhiere a él. The package name is EPPlus, and I have written about it before. This type implements the IDisposable interface. The Open XML SDK 2. This package is considered a SemVer 2. Using Excel Object Model in one way and another way is using Microsoft Jet Engine to connect Excel from CSharp. 0 のα版がリリースされました。 NPOIは現在 1. EPPlus has no dependencies other than. たかだか数十万セル程度であればなんら問題なしですが、何故Excelシートに 万行も書くのでしょうね? これOutOfMemoryなしに出力できたとしても読み込めないのでは. Read Data From an Excel File (. This post shows you how you can create the functionality to export data as a CSV file to download and open in Excel. xslx" file (or maybe something completely unrelated!) etc. For the Core Location source used in this example, see the LocationHelper class in the solution that accompanies this post. Or you can change the display format after you paste the data into Excel. Also you can see how to find Named Ranges in Excel and get the range of occupied cells (Used area) in excel sheet. Use sample C# source codes for Excel reading and writing. NET version of POI from Apache Foundation. How to read excel (*. Visual Studio Code - Excellent free editor from Microsoft, based on GitHub Atom. CodeLineage - Easy access to a cumulative diff view between file revisions (supports svn, git, mercurial, perforce). raw download clone embed report print text 372. NET Core support available now for both SelectPdf Commercial Library and Community Edition. Net, How do I iterate all the rows in Excel. As of ExcelDataReader version 3. The SDK also uses the. Visual Studio Code でWPF アプリを作ってみます。MSBuildを使います。 Windows ユーザーで、Visual Studioを使うまでもないけどC#でWPF アプリを作ってみたいという変人向けです。 はじめに OS. The main issue I have is the "normies" use Excel. NET Core as the framework was not mature enough then. xlsx) and the file will be downloaded in ASP. I've implemented a low-level class called ExcelData which uses the ExcelDataReader and does things like figuring out if it is an ". Excel 라이브러리를 사용하지 않고 어떻게이 작업을 수행 할 수 있습니까?. We can automate an Excel file from C# in two ways. Create advanced Excel spreadsheets using. How to use the Dapper ORM in C# Take advantage of the lightweight, open source Dapper to simplify data access and ensure high performance. html) so that anyone can view your Excel data on the web. EPPlus Apparently a lot of folks have had the same issue using the library and many suggested different workaround or alternative libraries. Net, Excel, SQL Server. Not a member of Pastebin yet? Sign Up, it unlocks many cool features!. Our customers often have to import data from very simple Excel *. Reading Excel Files in C# - posted in C# Tutorials: IntroductionIn this tutorial we will look on how to read a cell value in a worksheet in excel (xls or the newer one xlsx is supported). 用的vs2015,把项目打成dll文件在unity里面运行,debug. ddl檔下載(Visual Studio要加入參考). How to import Excel file to DataTable in C# and VB. ClosedXML - 让开发人员能很方便创建Excel 2007+(. Then I test samples from EPPlus and are faster than my approach so I think in use EPPlus instead of Microsoft. 0 EPPlus是一个使用Office Open XML格式(xlsx)读取和写入Excel文件的. The package name is EPPlus, and I have written about it before. XLS file and run the code from task scheduler automatically. 0 has introduced many new features along with neat coding. Office Interop needs Excel driver to be installed on the machine which is using it. I'm trying to investigate the topic from some threads of the forum, and the MSDN of MS. 1} This project is the. Install the ExcelDataReader. com Source Code Docs Changelog EPPlus is a. I'm using C# in Visual Studio 2005. NET programming. 5 projects AsyncCTP 0. light-years better than EPPLUS that after. The line chart is based on worldwide web search for the past 12 months. ExcelDataReader 2. NET, without the need of interop. It is very common task for web developers. VBA删除命名范围。 获取#NAME? Excel VBA中的条件格式使用格式条件中的当前月份和年份值 使用Excel包库将图像添加到Excel中 Excel:返回不同表格中相同单元格的结果 Excel VBAfunction识别只读模式 条件格式 – 如何设置“每行一个条件”的范围?. Find out more. io monitors 4,472,581 open source packages across 37 different package managers, so you don't have to. have used ExcelDatareader as the root namespace for the new projects. c#利用EPPlus读取excel实例。 简介:Epplus是一个使用Open Office XML(Xlsx)文件格式,能读写Excel 2007/2010文件的开源组件 功效:支持对excel文档的汇入汇出,图表(excel自带的图表基本都可以实现)的列印. strings vs numbers. * [Orleans](https://github. The purpose of this article is to demonstrate, by example, how to utilize the advanced features of EPPlus and create professional-looking Excels. Net, How do I iterate all the rows in Excel. Looking for a way to access a password protected excel file with ExcelDataReader and Epplus, can't find a proper answer. Select the column, {Format} "Cells" and choose "Custom" and set the format to display as 000000 or however many characters wide the data must contain. Core as EPPlus didn't have. Top 10 Excel Libraries in 2017 Microsoft Excel is a program developed by Microsoft for Windows, Andriod, iOS, and macOS. Net, How to get the range of occupied cells in excel sheet in VB. Convert an XML file into an Excel spreadsheet with this technique by Edmond Woychowsky in Software on March 1, 2007, 8:39 AM PST. NET Core as the framework was not mature enough then. What is the common knowledge about NPOI, EPPlus and Koogra as of 2015? Ask Question Asked 4 years, 3 months ago. ddl檔下載(Visual Studio要加入參考). Lightweight and fast library written in C# for reading Microsoft Excel files ('97-2007). 还有一个原来是一个sheet一个文件的纯文本数据(2003xls格式),直接用excelDataReader读到dataSet去再用epplus合并为一个xlsx就简单几句。。顺带修改一下数值格式,还可以加上几个参数。。速度提升10几倍. You can't explain these things to these people. NET Framework COM interop capability. Excel 라이브러리를 사용하지 않고 어떻게이 작업을 수행 할 수 있습니까?. Cross-platform on Linux and Windows Docker Containers, powered by. Actualización:. I can see that Automating Excel tasks from VS C# is a big concern. 2 Console Application to create an Excel file using EPPlus. exe' (CoreCLR: DefaultDomain): Loaded 'C:\Program Files\dotnet\shared\Microsoft. NET core support. 2 Adds the new C#5 async features for. Hi Srikanth, I need your help to convert from *. Once you've installed the provider, this is most frequently a 64-bit vs 32-bit problem: Solved - The Microsoft. net library that reads and writes Excel 2007/2010 files using the Open Office Xml format (xlsx). 用的vs2015,把项目打成dll文件在unity里面运行,debug. 3 and netstandard2. Net, Excel, SQL Server. 2: New GetNumberFormatIndex() method returns the index of the built-in or custom number format in a cell; New GetColumnWidth() method returns the width of a column, or 0 if collapsed or hidden. EPPlus is a. 說明:使用EPPlus作為伺服器端產生Excel檔案的好處是在伺服器上無需安裝Office,動態叫用EPPlus的方法產生Excel檔案,提供網頁下載Excel報表。 EPPlus的說明可參考:. NET Core, using an unofficial version of EPPlus. xlsx) file using ExcelDataReader c# excel programming tutorial c# windows forms application. VSTO: как заставить Visual Studio запустить новый экземпляр Excel Автоматическое заполнение строк в соответствии с другим содержимым ячейки Переупорядочить таблицу в Excel Не удалось извлечь. There are many ways to export. 1 and Docker engine. Hi Srikanth, I need your help to convert from *. NET应用程序移植到Linux和Mac OS X,为所有人保留单一代码库平台。 rider - 基于IntelliJ平台和ReSharper的跨平台C#IDE。 Omnisharp - 开源项目系列,每个项目都有一个目标:在您选择的编辑器中实现出色的. 兼容unity的System. The main issue I have is the "normies" use Excel. HttpPostedFileBase. NET API that can be used to create, read, write, convert and print Excel files in any type of. Subsets de reference (columnas) de una tabla en Excel Convierta las celdas (1,1) en "A1" y viceversa Cuadro de dialog de selección de carpetas (VBA, Excel 2010) que hace que los files sean ilegibles Usando una hoja de copy de VBA macro y fórmula r1c1 Detener VBA para bloquear la hoja de Excel al ejecutar una function Valores únicos del recuento de tabla dinámica de Excel Cómo saber el. NET 4 projects AsyncBridge. NET Framework COM interop capability. Visual Studio Express - The free lightweight version of Visual Studio for. This project has been started in June 2001 and is still in progress. Methods for Exporting Data to Excel "Number" tab, and then select "Text" from the Category box and click on [OK]. I want to read data from an excel sheet into VB net and display it in a gridview. How to read entire content of an excel file using VB. Not a member of Pastebin yet? Sign Up, it unlocks many cool features!. NET之外,EPPlus没有任何依赖关系。 访问GitHub主页. Packaging API and provides strongly typed part classes to manipulate Open XML documents. All of my examples on this blog have been around using the Open XML SDK DOM to write Open XML files. x to the current Excel 2003. Packaging API and provides strongly typed part classes to manipulate Open XML documents. Lightweight and fast library written in C# for reading Microsoft Excel files ('97-2007). An essential tool for any modern development platform is a mechanism through which developers can create, share, and consume useful code. Например, NPOI и EPPlus. paket add ExcelDataReader --version 3. The package name is EPPlus, and I have written about it before. 1} This project is the. Spreadsheet Free is a free. io monitors 4,472,581 open source packages across 37 different package managers, so you don't have to. NET programming. net library that reads and writes Excel 2007/2010 files using the Open Office Xml format (xlsx). Ik mis gewoon de integratie in VS. I want to read data from an excel sheet into VB net and display it in a gridview. Compatible with net20, net45. html) so that anyone can view your Excel data on the web. Example Excel table: //ID Name Display Order Active //1 John 1 1 ID, DisplayOrder and Active columns are read as double, so I have to convert them to long, int and bool types respectively. EPPlus is a. ExcelDataReader for Protected Excel Files. net library that reads and writes Excel 2007/2010 files using the Open Office Xml format (xlsx). Core as EPPlus didn't have. I'm using C# in Visual Studio 2005. 0 EPPlus是一个使用Office Open XML格式(xlsx)读取和写入Excel文件的. dll from Visual Studio Async CTP Samples folder AsyncFunc 0. NET 4 projects AsyncBridge. NET Framework Language-Integrated Query (LINQ) technology to provide strongly typed object access to the XML content inside the parts of Open XML documents. NET implementation. Es la forma mas óptima y consiste en descomprimir el archivo XLSX y leer los XML donde se encuentran definidos los datos y las hojas. A library for Excel export/import. Through the automation from C# we can achieve creating a new workbook, adding data to a. 2 Adds the new C#5 async features for. Find out more. I choose to start by using PIAs. With amazing performance and functionality EasyXLS™ for Java has all the features needed to export data from Java to Excel as well as read and write data from or to Excel files using XLS, XLSX, XLSB, XLSM, XML, HTML, CSV file formats. SqlBulkCopy class as the name suggests does bulk insert from one source to another and hence all rows from the Excel sheet can be easily read and inserted using the SqlBulkCopy class. 聽說EPPlus讀寫Excel檔寫法較簡潔,用了後真的感覺不錯. I am using ExcelDataReader to import an Excel file to a dataset. Core as EPPlus didn’t have. The NuGet Gallery is the central package repository used by all package authors and consumers. Top 10 Excel Libraries in 2017 Microsoft Excel is a program developed by Microsoft for Windows, Andriod, iOS, and macOS. Es la forma mas óptima y consiste en descomprimir el archivo XLSX y leer los XML donde se encuentran definidos los datos y las hojas. NUnitTestAdapter {2. ExcelDataReader - 用C#编写的轻量级快速库,用于读取Microsoft Excel文件 详细内容 问题 43 同类相比 13 发布的版本 v3. EPPlus is a. NET Web API Solution in Docker. Compatible with net20, net45. There are even many articles related to it but we are still often frustrated when we encounter problems. DevExpress XAF extension framework. NET应用程序移植到Linux和Mac OS X,为所有人保留单一代码库平台。 rider - 基于IntelliJ平台和ReSharper的跨平台C#IDE。 Omnisharp - 开源项目系列,每个项目都有一个目标:在您选择的编辑器中实现出色的. 0, the project was split into multiple packages: Install the ExcelDataReader base package to use the "low level" reader interface. Net, How to get the range of occupied cells in excel sheet in VB. I'm trying to investigate the topic from some threads of the forum, and the MSDN of MS. currently i have VB macros on back off an Excel, unfortunately I cant run that macro on my Prod server as no office installed. A simple example to submit multiple rows in form using Spring 3 MVC. 環境はVisual Studio 2012の環境下で、言語はVB2012、. We could iterate the rows using INSERT statement, but there is an easier way. An essential tool for any modern development platform is a mechanism through which developers can create, share, and consume useful code. VSTO: как заставить Visual Studio запустить новый экземпляр Excel Автоматическое заполнение строк в соответствии с другим содержимым ячейки Переупорядочить таблицу в Excel Не удалось извлечь. NET应用程序移植到Linux和Mac OS X,为所有人保留单一代码库平台。 rider - 基于IntelliJ平台和ReSharper的跨平台C#IDE。 Omnisharp - 开源项目系列,每个项目都有一个目标:在您选择的编辑器中实现出色的. Cualquier cosa que se haga después de eso no tiene ningún efecto; como lanzar los valores a la cadena en el SQL (por ejemplo, Cstr ([Columna])) solo se devuelve una cadena vacía. Add-ins created with Excel-DNA can export high-performance user-defined functions and macros, and can be packed into a single file for easy distribution and installation. dll后,无法正常打出Unity4. Writing Large Datasets to Excel Files Using EPPlus in C# Recently, I had to resolve an issue of a corrupt report file of an enterprise application in production. js Android windows git spring html5 multithreading string excel algorithm wordpress facebook image. Compatible with net20, net45, netstandard1. Visual Studio Code でWPF アプリを作ってみます。MSBuildを使います。 Windows ユーザーで、Visual Studioを使うまでもないけどC#でWPF アプリを作ってみたいという変人向けです。 はじめに OS. Top 10 Excel Libraries in 2017 Microsoft Excel is a program developed by Microsoft for Windows, Andriod, iOS, and macOS. функции для обработки $50, то добавляется. follow us on twitter @expandframework or simply Star/watch this repository and get notified from GitHub and its verbose RSS feeds. This type implements the IDisposable interface. The location data is captured using the Core Location framework. EPPlus is a. Read Data From an Excel File (. 0 has introduced many new features along with neat coding. EPPlus has no dependencies other than. * [Orleans](https://github. Last year around this time I wrote about Import and Export xlsx in ASP. 2 was also released. NET Standards. EPPlus is a very helpful open-source 3rd party dll for exporting data to excel. Actualización:. PDF for Java is a 100% free PDF API that enables Java applications to read, write and save PDF documents without using Adobe Acrobat. net library that reads and writes Excel files using the Open Office Xml format (xlsx). The SDK also uses the. NET library that reads and writes Excel files using the Office Open XML format (xlsx). [Consultare] Links & discussioni utili, Forum ASP. It is recommended to use NuGet through the VS Package Manager Console Install-Package or using the VS "Manage NuGet Packages" extension. Convert Xlsb To Xlsx. NET applications. EPPlus is a. GitHub brings together the world’s largest community of developers to discover, share, and build better software. NET Framework 4. Net: commenti, esempi e tutorial dalla community di HTML. Come per tutte le sezioni di questo forum, aggiungiamo anche a questa una raccolta di links e threads utili alla risoluzione dei problemi. NET core support. 1 and Docker engine. But we do not want to use large DLL's or third party software for that. This article shows how to import and export csv data in an ASP. XLSX file to *. Net, How to get the range of occupied cells in excel sheet in VB. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. The Open XML SDK 2. Using this Java PDF library, developers and programmers can implement rich capabilities to create PDF files from scratch or process existing PDF documents entirely on Java applications (J2SE and J2EE). Cualquier cosa que se haga después de eso no tiene ningún efecto; como lanzar los valores a la cadena en el SQL (por ejemplo, Cstr ([Columna])) solo se devuelve una cadena vacía. NET, an uploaded file was represented by an instance of System. The line chart is based on worldwide web search for the past 12 months. config files for Visual Studio web (Id='EPPlus ',Version='4. This post shows you how you can create the functionality to export data as a CSV file to download and open in Excel. Our customers often have to import data from very simple Excel *. com/dotnet/orleans) - Orleans is a framework that provides a straight-forward approach to building distributed high-scale computing. People suggested I use EPPlus, and. 3 AsyncCtpLibrary. People who understand what a MB is vs an MiB can use Excel or other tools as needed. Through the automation from C# we can achieve creating a new workbook, adding data to a. With amazing performance and functionality EasyXLS™ for Java has all the features needed to export data from Java to Excel as well as read and write data from or to Excel files using XLS, XLSX, XLSB, XLSM, XML, HTML, CSV file formats. NET library that reads and writes Excel files using the Office Open XML format (xlsx). Top 10 Excel Libraries in 2017 Microsoft Excel is a program developed by Microsoft for Windows, Andriod, iOS, and macOS. How to create Excel file in C# The following C# code example shows how to use COM interop to create an Excel file. ExcelDataReader github. In those days there weren't many options available to create Office files, but for small applications it was possible to automate Office programs on the server with COM. Builds on top of EPPlus, ExcelDataReader and AutoMapper, adding POCO. FileInfo finfo; Excel. NET data provider, extract data and then display the data in a GridView. EPPlus is a. Firstly, we will create an ImportExcel in Home Controller which returns a View. This document contains a description of the binary file format of Microsoft Excel, including all available Excel versions (for Windows) from Excel 2. Read more. xlsx,xlsm ファイルの読込・作成ができます。 読むだけならExcelDataReader. Una vez que JET decide sobre el tipo, se adhiere a él. The console application uses the EPPlus package in the Repository to generate the Byte Stream and output SQL Server data into a MultiSheet Excel File. Excel을 열고 처리해야합니다. But we do not want to use large DLL's or third party software for that. Discover new software. EPPlus Console App - Excel File with Multiple Worksheets. The Excel table contains 2 rows with about 6 lines filled up. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. 0} A package including the NUnit TestAdapter for Visual Studio 2012/13/15. Net , Reading Named Ranges in Excel using VB. Compare ExcelDataReader and EPPlus's popularity and activity Popularity. The attached Visual Studio 2010 C# and VB. xlsx) in ASP. SqlBulkCopy class as the name suggests does bulk insert from one source to another and hence all rows from the Excel sheet can be easily read and inserted using the SqlBulkCopy class. Cross-platform on Linux and Windows Docker Containers, powered by. I want to read data from an excel sheet into VB net and display it in a gridview. Ik ben zelf ook bezig met GiT, maar ik heb enorme moeite met de integratie met Visual Studio 2010. Una vez que JET decide sobre el tipo, se adhiere a él. Excel 라이브러리를 사용하지 않고 어떻게이 작업을 수행 할 수 있습니까?. Convert Excel tables to HTML using "Save as Web Page" option Using this method you can save an entire workbook or any portion of it, such as a selected range of cells or chart, to a static web page (. EPPlus Apparently a lot of folks have had the same issue using the library and many suggested different workaround or alternative libraries. 5 for Microsoft Office is built on top of the System. There is a newer version of this package available. We will connect to a Microsoft Excel workbook using the OLEDB. 3 Lightweight and fast library written in C# for reading Microsoft Excel files ('97-2007). 3つ目は、Excelを確認するだけだったので、EPPlusではなく ExcelDataReaderを使用してみた。 これは、xls、xlsxを高速に読み込めるライブラリで、書き込みは出来ない。 読み込むだけなら、最高速なので、こっちにしてみた。. The purpose of this article is to demonstrate, by example, how to utilize the advanced features of EPPlus and create professional-looking Excels. NET library that reads and writes Excel files using the Office Open XML format (xlsx). c# - create excel xlsx file from dataset Create Excel files from C# without office C# Convert Excel 2007 (xlsx) file into Excel 2003 (xls) file Creating Excel spreadsheets. In those days there weren’t many options available to create Office files, but for small applications it was possible to automate Office programs on the server with COM.