Epplus Save Excel File

You can export to Excel from a GridView using a StringWriter and an HtmlTextWriter. How can I give line break in excel epplus. Pls help me out i am Downloading a File with a Save As Dialog in ASP. How to save Excel chart as image, copy or export it to Word & PowerPoint by Alexander Frolov | updated on June 27, 2018 40 Comments In this article you will learn how to save your Excel chart as an image (. that if a person pays the ransom, a key is provided to unlock the files. EPPlus is a. c#,epplus To provide more context, if I simply want to export my model to an Excel file in my ActionResult, I have that worked out. NET library, which reads and writes Excel 2007/2010 or higher files, using Open Office XML format. I am using Epplus library to convert dataTable in excel. So you can see that how easy it becomes to read and write an excel file if you use EPPlus dll Note:When you host the project on the IIS (for my case) don't forget to give ' write or modify ' permission to all the user for the folder that contains your excel file in your project. The sample applciation demonstrates that how you can export the datatable object in c# to excel format. A CSV file is sometimes referred to as a flat file. · Hello, See the answer in the following post. What is EPPlus? A library to manage excel spreadsheets. One was to generate some documentation for business rules so we can have it up to date and share with our users at all times. As a quick example, if your working in C# there is a good chance you already have the app data held in a DataTable. Additionally, if all the users of a shared workbook save and then close the workbook, the workbook may not decrease in file size as it should. The problem is that when I save the file through. Turns out there's a. NET Core using EPPlus; Read/Write Excel file in. By using EPPlus. You have to pass both CSV and the EXCEL file path where it should be saved. Thank you for reading this blog. First, add the reference to Microsoft Excel XX. xlsm excel file format. NET The following sections you can find how to open and edit an Excel worksheet through VB. var data = file. How to generate excel file with charts, table data, image and shape using c# and Epplus. I chose EPPlus. NET technologies (Language C#). Bottom line is that this tool is going to save you a lot of time: In simplifying your task of putting the Workbook and Worksheets together and I can't stress enough how much time this will…. To alter files with interop you have to operate a local Excel. Using EPPlus Library to Convert XLSX to CSV The EPPlus library for Excel data is great, but it has no built-in functionality for converting. Core支持Excel 2007/2010 xlsx文件导入导出,可以运行在Windows, Linux和Mac。 EPPlus. cs file: public s. Comments: Yes, EPPlus could not handle encoded url's. In EPPlus web site, you can find a help file describing all the EPPlus classes and methods you can use. 0 Object Library in you project. "Cannot open the file because the file format or extension is invalid" opening Office files. xlsx), which is stored on D: drive of the computer. SaveAs - 30 examples found. ) XlsxWriter. However, in the past I have used an external library, EPPlus, which has actually worked exceptionally. Upload and Read Excel File (. You will most likely see and use the XLSX file more often because it is compressed to save space and is easier to share with other users. We also have two use cases where we need to generate Excel file on the server. Excel file to space delimited text file? by KellyWelch | September 25, 2007 1:23 PM PDT I know how to import a text file as space delimited into an excel file but I want to do the opposite. xlsx " to " ERI_Cover_001. The file has a first spreadsheet that contains data that is used for populating pivot tables in the following sheets. I use EPPlus to export excel 2007 file. This fantastic, easy to use (and free) library enables the use of Excel in ASP. Verify that the file has not been corrupted and that the file extension matches the format of the file. This is to try to understand if the problem is in how the file is created or if it is in how it is transferred to the browser. Net, Excel, SQL Server. In which line break is also there. One disadvantage of EPPlus is lacking ability to work with old format XLS…. Here is a sample (posted here because I discovered a pitfall, and it's not a slam dunk) for doing just that. Step 5 : Create a new class (EmployeeViewModel. We are going to use EPPLus library in this article. Now I have to generate the same report, but in PDF format. The problem is, I am trying to load the contents of a very large excel file, it has 7 tabs, with one tab haveing more then 200k rows, and another tab with 70k. Write to Excel file from your application:. Using something like EPPlus or the XML SDK you can manipulate files directly (and EPPlus in my experience is much easier). EPPlus is a. C# - EXPORT DATATABLE TO NEW EXCEL XLSX - USE EPPLUS. 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. xlsx file containing our DataSet's data, then open the file in Excel for you to admire. There are many. Spreadsheet lacks an API support for direct exporting GridView and/or DataGrid controls to an Excel file. *** My requirement was to replace oData connections. EPPlus is a. xlsx) and the file will be downloaded in ASP. Our internal tool uses EPPlus to read the file and generate user profiles. EPPlus - Read the Excel table Using EPPlus, I want to read an excel table, then store all the contents from each column into its corresponding List. NPOI is another very popular package for reading/writing excel files, and it also has. Bài viết hôm nay, mình giới thiệu các bạn sử dụng thư viện EPPlus, một thư viện dùng để xử lý file Excel bá đạo trong lập trình C#. The Buttons extension for DataTables provides three plug-ins that provide overlapping functionality for data export:. (∩´ω`∩)< C#でエクセル操作が出来るライブラリを紹介します。 機能も優れていて、使いやすいのでオススメです。 使い方を忘れないように、忘備録として書きます。 字ばっかりで. This post shows how to import and export. Many people has asked me that how we can read the contents of an excel file using EPPlus. XLSX Template with EPPlus and Web API, save as XLSX or PDF I've been using NPOI for years to create/edit XLS documents via C#, and it works perfect. To alter files with interop you have to operate a local Excel. With OpenXML you are simply constructing an XML structure which represents an Excel file. 2 de EPPlus. Excel)を使う必要はありません。. Recommend:c# - Writing an Excel file in EPPlus. 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。. 2 Save Methods: XL. I've made a method to extract Excel data out of an existing Excel file. Sample: Constructing an Empty Excel File. NET Core using OpemXML SDK; We shall be looking into one more simple approach of dealing with office excel using the EPPLus. Subsequent overloads are uniquely renamed by appending to the method name '_2', '_3', etc (method, method_2, method_3), an integer that corresponds to the order of declaration that can be found in EasyXLS. Here Mudassar Ahmed Khan has explained how to create an Excel file using the data (records) from SQL Server Table and then download it in ASP. Launch the Demo. 这篇文章主要给大家介绍了关于ASP. Save(); } When the file generated is saved and opened, i got this error: "unreadable content", around "xl/styles. NET Core中如何使用EPPlus导入出Excel文件的相关资料,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面来一起学习学习吧. Như cái tiêu đề ở trên thì trong series này mình sẽ hướng dẫn các bạn cách xử lý file excel trong C# một cách đơn giản nhất với thư viện. Does anyone know a way to export a DataTable to Excel with these?. To read the data from csv or excel file, I used EPPlus Library which you can get and download from the link given. The whole thing needed to be created in-memory, then sent to the user, who would be presented with the file open/save dialog in their browser. Unreadable content in Excel file generated with EPPlus I'm having a little problem when I generate an Excel file from a template, using the EPPlus library. com EPPLUS 导出excel,包括文本,图片 标签: int sp 数据 nb com sql. Hi Anaguib, According to your description, as far as I know that EPPlus supports VBA, so you could write VBA code to Excel file by using EPPlus. Intenté crear nuevos files de Excel, volver a save los existentes pero eso no funcionó. Now add dll called EPPLUS from NuGet which is used for reading and writing files. save chart as image ; Besides the examples above, this free Excel library also supports to generate, edit, save Excel file in both xls and xlsx format. xlsm file, I get message that the file format is invalid 1 EPPlus - saving an excel created in memory and opening it on excel gives an error. dll(测试环境Win7+V2010旗舰) 3 添加using引用. Note the use of HtmlSaveOptions to set the worksheet options that are supported when saving an Excel file in HTML format. How to save a simple tabular Excel file from C# using EPPlus Posted on September 7, 2016 by Jerome An application I wrote was exporting a couple of different sets of objects as CSV files, but the people using it wanted Excel files. The file has a first spreadsheet that contains data that is used for populating pivot tables in the following sheets. The file can export normally but i have some problem with setting column format. public string[] EXPORT_DATATABLE_TO_EXCEL_XLSX_NEW_FILE_USE_EPPLUS(DataTable DATA_TABLE, string SHEET_NAME. NET Web API to allow users to export data from a SharePoint list into an excel. But I don't want to do that, I need to open Excel from the app. With OpenXML you are simply constructing an XML structure which represents an Excel file. Then I add MemoryStream instance to Attachment. When you click on the button, it'll create a DataSet and fill it with some sample data, and prompt you for a location to save our example Excel file to. Open an Excel file. cs file: public s. Edit>Replace paragraph mark with space 4. save chart as image ; Besides the examples above, this free Excel library also supports to generate, edit, save Excel file in both xls and xlsx format. OutOfMemory exception that originated from ClosedXML. Creating Universal Excel Sheets Using c# and EPPLUS. The advantage of this approach is that you don't need Excel installed to create one (of course you'll need Excel to open the created workbook). This is the code that I have in my ExportDocument. NET Core中如何使用EPPlus导入出Excel文件的相关资料,文中通过示例代码介绍的非常详细,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面来一起学习学习吧. I don't take any credit. FileInfo("test. Feedback and Support This project is sponsored by E-iceblue. It is specified as a number. It is a great library, very fast and full feature. For Example:-. I am making a tool to read 3 input files in CSV and then filling an XLSX file with the information from the CSV. net In the below example we have a dataset contains student details and product details. How to define Excel margins with EPPlus I need to be able to set the margins (printer settings) of an Excel workbook programmatically. NET Framework written in C#, and is released under the MIT License. EPPlus is a. EPPlus nuget package EPPlus is a. 2 The NuGet Team does not provide support for this client. This library can be installed from NuGet as a package. EPPlus supports many properties like cell ranges, cell styling (border, color, fill, font, number, alignments), charts, pictures, shapes, comments, tables, protection, encryption, pivot tables, data validation, conditional formatting, formula calculation etc. The excel file being created had 5 sheets with around 400,000 rows each and ClosedXML could not handle this large amount of data. NET 4+ allows C# to read and manipulate Microsoft Excel files, for computers that have Excel installed (if you do not have Excel installed, see NPOI). supports: Cell Ranges Cell styling (Border, Color, Fill, Font, Number, Alignments) Charts Pictures Shapes Comments Tables Protection Encryption Pivot tables Data validation Conditional formatting VBA. For example, you can convert Excel file to a different spreadsheet format (XLSX, XLS, ODS, CSV, or HTML) or to PDF, XPS, and image formats. Questions: i want to export data table to excel file with EPPlus that data table have property with int type,so i want to in excel file,the same format will be. Core导入导出Excel xlsx 文件,EPPlus. One disadvantage of EPPlus is lacking ability to work with old format XLS…. I want to know if I am repeating myself and if I can make it better and faster. I use this to generate excel files on the server: CodePlex EPPlus-Create advanced Excel spreadsheets on the server. Hello, Is it possible to save a xlsx file as a PDF file? Been looking for this over weeks now for this feature in a. That is the reason why you got message Package object was closed and disposed, so cannot carry out operations on this object or any stream opened on a part of this package. Copy(strSource, strNewNotePa, ID #4365342. Build 1705 on Excel 2016 - Save As corrupts VBA Code/Macros Prior to Build 1705 on Excel 2016 (like from Excel 2010-2016), we could open a XLSM file and login to a web service and work with the dashboards within Excel. Errore - errore di networking durante il download di file excel fatta da EPPlus. This API has been very useful for me. Check here for more information. xlsx) and the file will be downloaded in ASP. Net, Excel, SQL Server. NET core application without Microsoft Office dependencies. Excel Graphs with EPPlus In my last post I showed how to write data to an Excel file using the EPPlus library. xls' (name of my file). dll in c# and asp. Text|some text that will be used Stack Exchange Network 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. XlsxWriter is a Python module that can be used to write text, numbers, formulas and hyperlinks to multiple worksheets in an Excel 2007+ XLSX file. NET The following sections you can find how to open and edit an Excel worksheet through VB. Build the project and Run. Your question is slightly ambiguous. There are countless articles that demonstrate exporting ASP. 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 使用EPPlus. When I save the Excel file to a text file in Unicode format, the text which contains the double quote is saved as three double quotes, for example """text""". Copy(strSource, strNewNotePa, ID #4365342. C# (CSharp) OfficeOpenXml ExcelPackage. net library that reads and writes Excel 2007/2010 files using the Open Office Xml format (xlsx). Capitulo II. The data from database will be written (inserted) into the Excel file Sheet (. I dont know from which version onwards but EPPlus's SaveAs method accepts a FileInfo. Open with your visual studio. NET and are having trouble learning how to format certain cells or cell ranges, then this little tip will come in handy. net library that reads and writes Excel 2007+ files using the Open Office Xml format (xlsx). This is a common task for ASP. Epplus Read Excel Vb Net How To Create A Hyperlink Using Excel Hyperlink() Function In EPPlus. There are countless articles that demonstrate exporting ASP. This kind of works, but the resulting file is actually an HTML file masquerading as an Excel file. EPPlus nuget package EPPlus is a. Hello, Is it possible to save a xlsx file as a PDF file? Been looking for this over weeks now for this feature in a. Step 4 : connect your database. I find HTML fine for creating simple reports or sometimes log files from C# applications, but these reports were churning out at around 50MB, which Internet. The advantage of this approach is that you don't need Excel installed to create one (of course you'll need Excel to open the created workbook). But when the data comes from a database or any datasource it becomes difficult for us to import them into the excel sheet. (Sample code to create the above spreadsheet. If you want to work with XLS on your server without installing Office and using COM, check out NPOI and I'm sure you won't be disappointed. using OfficeOpenXml; //give reference in you cs file. It contains 3 tabs where info should be extracted from. Read Excel file in C# with the help of the code below. /* Save workbook as a file */ oPackage:SaveAs(NEW System. ExcelLibrary seems to still only work for the older Excel format (. Drop an execute task onto a new package control flow surface. And one of the most popular. I will shorten the code to be easier to review. NET without using COM in C#, so I decided to use this approach to create extension methods for DataTable and DataSet classes. Read a Excel blob file using Excel Data Reader in Azure Azure Blob storage is a service for storing large amounts of unstructured data. net MVC C# and open source EPPLus & NPOI ASP. More information. Any question, bug report, comment and feedback are welcome. EPPlus 는 닷넷으로 엑셀 자료를 핸들링 할 때 매우 편리하며, 가벼운 라이브러리 입니다. NET Excel 2016复制所有在Excel VBA中重复的第一个字符之后的所有内容 Excel Online. I'm using EPPLUS to generate Excel files so far, so good. Beim Suchen im Internet fand ich viele Libaries und auch natürlich die Application Com-Object Variante von Microsoft. NET Standard Excel library that allows to create, read, and edit Excel files in. Like CSVHelper, you can create a file by reading an IEnumerable object. Open an Excel file. cs, to create an Excel file and save the Excel document as a physical file and open the file for viewing. Many people has asked me that how we can read the contents of an excel file using EPPlus. To alter files with interop you have to operate a local Excel. I found this file: ExcelPrinterSettings. 49000001) be. Sending excel file generated using EPPlus as a response in Web API I created a web service using ASP. EPPLus generates only the necessary minimum of XML for the Excel program to read it. EnableAutoRecover: Gets or sets a value that indicates whether Microsoft Office Excel saves changed files, of all formats, on a timed interval. UPDATE: have determined that the files are encrypted with a private and public key. I was building a small CRM tool for a client. We need to create an instance of the client-side ExcelIO component that we can use to actually open the file: var excelIO = new GC. The file size of a Microsoft Excel workbook may unexpectedly increase exponentially. Creating an Excel Workbook with VB. The ExcelTextFormat class has more conditions, based on that it reads the CSV file. To export text files, execute the following steps. NET Core MVCでExcelファイルを操作する方法を調べてみました。 ASP. EPPlusを初めて使用したのは今回が初めてで、プログラムでExcelをエクスポートすることに全面的に精通していないので、ここで失われてしまったようです。. Program works fine, i recei. Using EPPlus Library to Convert XLSX to CSV The EPPlus library for Excel data is great, but it has no built-in functionality for converting. I want it to recognize the table's heading and categorize the contents based on that. Getting data from database in DataTable format and then generating Excel sheet and formatting it using EPPlus is very easy in C# MVC. $FileNameCSV = "h:\t. The data should be stored to use local so it's always fast available. It is possible using the EPPLUS. Intenté crear nuevos files de Excel, volver a save los existentes pero eso no funcionó. Do you mean "without opening it"? That can't be done. I using EPPlus to fill data to excel file and after that client can download, this is OK. In some cases, we may want to convert Excel 2007 or higher xlsx file to Excel 97-2003 xls file or PDF file. can anyone help me out. SaveAs (new FileInfo (outputPath));} Unlike the Save method SaveAs method overwrites file as well in case file name already exists. this is my code. xlsx) and the file will be downloaded in ASP. ADDRESS Formula has five parts: ADDRESS (row_num, col_num, ref_type, ref_style, sheet_name) row_num is the row number in which the cell for which you are trying to generate the address is located. Properly Generating Excel Files in. You can use it to bind to data source controls, such as SqlDataSource. In which line break is also there. (∩´ω`∩)< C#でエクセル操作が出来るライブラリを紹介します。 機能も優れていて、使いやすいのでオススメです。 使い方を忘れないように、忘備録として書きます。 字ばっかりで. Get the most of this tutorial by learning the source samples. Cells生成Excel帮助类 真爱无限 2016-08-24 14:54:03 浏览669 开源Excel库. NET Web applications display data in data controls. com Use EPPlus to open a template Excel file, update workbook property. However, now i want to save file after fill data above step to others folder name as " Download " and change name " ERI_Cover_Sheet_V1. I dont know from which version onwards but EPPlus's SaveAs method accepts a FileInfo. There are countless articles that demonstrate exporting ASP. dll - is available after installing GemBox's spreadsheet software. NET applications without the need to install the Access Database Engine (ACE) or having to mess about with unsupported Office Automation on the web server. Excel Graphs with EPPlus In my last post I showed how to write data to an Excel file using the EPPlus library. c# - Load large amount of excel data with EPPlus I have a basic winforms app that a user can upload an excel file (. Create a Worksheet You can add a new worksheet into the Workbook through Create method of IWorkbook interface. Using EPPlus Library to Convert XLSX to CSV The EPPlus library for Excel data is great, but it has no built-in functionality for converting. Locking a worksheet in Excel 2013 gives you the freedom to share the file with someone, without worrying about that person making unwanted changes to the data or its formatting. IO(); Then we need to add a function to import a file. I have been stuck on this for days and despite all of the help out there, none of these solutions have been working for me. 2 Save Methods: XL. You can create new Open XML spreadsheets, or work with existing Open XML spreadsheets that are compatible with Microsoft Excel 2007/2010/2013 and LibreOffice Calc. dll Utilizza "LoadfromCollection" con un elenco che contiene un altro elenco all'interno Ecco un esempio di fusione di più file in una copiando tutti i fogli di lavoro dai file excel di origine. epplus documentation: Saving the Excel document. net library that reads and writes Excel 2007/2010 files using the Open Office Xml format (xlsx) is EPPlus. xlsx to other type of formats (Image, PDF, CSV, XML), inserting OLE object and etc. What is EPPlus? A library to manage excel spreadsheets. The Sheets will contain one or many Sheet which each associated with a WorksheetPart. Most of these pages refer specifically to recovering data, not to recovering the macros in a module associated with a workbook. 49000001) be. Re: Excel completed file level validation and repair. Beyond setting cell values, EPPLus also allows you to change the appearance of the sheet. EPPlusを初めて使用したのは今回が初めてで、プログラムでExcelをエクスポートすることに全面的に精通していないので、ここで失われてしまったようです。. Core 是基于EPPlus 更改而来,在Linux 下需要安装libgdiplus 。. can anyone help me out. 1) Create Excel Pakage object for saving file. Recientemente actualicé mi aplicación. Excel cannot open the file ‘A. Step 2: click on visual studio and create new project. I'm easily distracted, and Doug only gave us a taste, so time to write a module! [Edit: Doug has expanded his solution to a full module with a number of bells and. MS Excel also complains about the file after saving from LibreOffice, but does at least open it. Does everyone knows why it happened? Thank you!. Its easy-to-use interface allows you to create PDF files by simply click. Excel file to space delimited text file? by KellyWelch | September 25, 2007 1:23 PM PDT I know how to import a text file as space delimited into an excel file but I want to do the opposite. You can create new Open XML spreadsheets, or work with existing Open XML spreadsheets that are compatible with Microsoft Excel 2007/2010/2013 and LibreOffice Calc. 501 beta, when I try to save a. Step 3: Now we need to connect our project with database, so get your database from SQL server and connect it with your MVC project, here I am using my local database "Students", with table "Student_details" here is the snapshot of database, with its current dummy data. 0 Object Library in you project. NET Core library and helps reads and writes Excel files using the Office OpenXML format. This is a common task for ASP. You can use it to bind to data source controls, such as SqlDataSource. HTML Markup Code To Import CSV Data in SQL Server – [. XLSX files (there's the compatibility pack). On the Excel worksheet, select the cells with numbers that you want to format. EPPlus 是使用Open Office XML格式(xlsx)读写Excel 2007 / 2010文件的. Simple Excel Export with EPPlus This entry was posted in Coding and tagged excel reporting on 2013-10-30 by Jesse Anyone I've ever met who works with an application that sits in front of a lot of data loves it when they can get that data exported to an Excel file for them to mess around with offline. I'm using EPPLUS to generate Excel files so far, so good. Unreadable content in Excel file generated with EPPlus I'm having a little problem when I generate an Excel file from a template, using the EPPlus library. EPPlus nuget package EPPlus is a. aspx] Now add the following HTML markup code in your. net library. Reading an Excel 2007 (*. Every now and then, when I try opening an Excel file, I get a message saying that "Excel cannot open the file 'file. xlsx (Excel files) in ASP. NET Framework written in C#, and is released under the MIT License. Because you can customize the protection for any worksheet, it's important to review what the user can and cannot do once its locked. It contains 3 tabs where info should be extracted from. Spreadsheet lacks an API support for direct exporting GridView and/or DataGrid controls to an Excel file. Excel import in Dynamics AX 365 Now Dynamics AX 365 is running on Web browser so import the data in AX using Excel, CSV, text etc. Now EPPlus has released beta package which supports. net library that reads and writes Excel 2007+ files using the Open Office Xml format (xlsx). net In the below example we have a dataset contains student details and product details. I learned the commends to assign values to the workbook properties and cell formatting and the exported Excel file appears correctly. Note, just like when we open a file to read, SaveAs does NOT take a file name as a parameter, but a FileInfo object instead. 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. Excel to PDF Converter is the fast, affordable way to create professional-quality documents in the popular PDF file format. It is the Sheet data which the actual values goes in rows and cells. Note:When you host the project on the IIS (for my case) don’t forget to give ‘ write or modify ‘ permission to all the user for the folder that contains your excel file in your project. net; Import Excel File To A Data Table; Save Listview Data To Same Excel File But Different Sheet; How To Read ASCII File ( 1 Byte 8 Bits) DataGridView To Excel File - Export Data From A DataGridView To Excel File; How To Read A Ghostscript File In VB. 0 package(s). How to save a simple tabular Excel file from C# using EPPlus Posted on September 7, 2016 by Jerome An application I wrote was exporting a couple of different sets of objects as CSV files, but the people using it wanted Excel files. NET Core what we covered today in this article. NET The following ASP. xlsx' because the file format or the file extension is not valid. Interacting with Microsoft Excel from C# using EPPlus - Part 1 I've been working on moving the reporting functionality of an existing application from HTML to Microsoft Excel format. EPPlus是一個可以在Server-side產生Microsoft Excel 2007格式的檔案,為LGPL license的開放原始碼的函式庫。 2. 0 Object Library in the C# project. It's writing the data with the EPPlus. from your c# application. Works with me with 15000 rows containing a "A" in column A, although Word doesn't really like a line of 30. 今回も EPPlus の使い方ではありません(タイトルに偽りあり)。 EPPlus は、 Office 2003 までの binary 形式のファイルが開けません。 しかし、未だに xls 形式のファイルは届きますし、xsl 形式のファイルを配布する自治体もあります。. NET with C# via EPPlus Good day, I have searched for a solution on the subject the last days, and I found that this library EPPlus allows retrieving formatting and charts from Excel files which is what I am aiming at the moment. It is licensed under GNU.