Excelpackage getasbytearray Session["DownloadExcel_FileManager"] = excelPackage. Is tehre a part of a code which I can get autom Using C# for API and I'm just new to it and I can hardly understand the concepts I searched from the web. Here is the implementation, which sets the cell width for the first column in the worksheet. This is the code I tried just to test (a I'm using EPPLUS to generate Excel files so far, so good. Cells["A1:K1"]) { rng. 5k columns). 2 I can not create excel file due to OutOfMem I am new to this Open Office XML and I was wondering what file extension the XLPackage takes. GetAsByteArray() and then shortly afterward the C# code attempts to save the same Excel file. So your code should look something like that: using I want to build ExcelPackage file on server side and than send allow user to download it. All relevant code is shown here: public ActionResult GetExcel() { string handle = Guid. xlsx"; //or if you use asp. Code is working absolutely fine in local, Means file is getting download I got the same eror in following code. ms-Excel" ; C# (CSharp) OfficeOpenXml ExcelPackage. 設定新的專案 命名你的專案名稱，並選擇專案要存放的位置。 3. After you setup the excel sheet then without saving or adding it to the MemoryStream, just make array of bytes as packge. In the above method you do the same thing twice. ::. I badly need help for this error: 'Object' does not contain a definition for 'user_name' an Here is the important part, called from an AJAX call in the view: using (ExcelPackage pck = new ExcelPackage()) { ExcelWorksheet ws = pck. I wasn't able to try adding await Task. Its about the way of Epplus encoding when we use . I returned this from the API: return File(excelPackage. The old format, xls, is no longer supported by the free Google Docs, Sheets or Office 365 offerings. If you want to use the MemoryStream, you should call package. using (ExcelPackage pck = new ExcelPackage()) { //Create the worksheet ExcelWorksheet ws = pck. Its definitely not using UTF-8 when converting to bytearray. Load - 50 examples found. Save, . Try to merge the conditions and give them a meaningful name rather then putting a long expression into an if: private void FormatDateTimeAsDate(ExcelWorksheet worksheet) { for (var Create advanced Excel spreadsheets using . 2, it works fine. MapPath FileInfo newFile = new FileInfo(outputDir. Do you want us to try to recover as much as we can? If you trust the now these two errors occured if i replaced ExcelPackage instead of dynamic 1. If you can't use the suggestions in the comments by t3chb0t or tinstaafl, you could maybe use the Open XML SDK. GetAsByteArray corrupted the package if ExcelPackage. cells. SaveAs, or . FullName + @"\sample1. For some reason, if the width was too narrow, all text in the cells was converted to ####, weird thing. NET Core application This example shows how to create an Excel (XLSX) or at OfficeOpenXml. LoadFromCollection(GetProducts()); And you are not seeing the contents of the GridView on Button3_Click because you are sending an Excel file to the client (by setting the Response. I use SUM and COUNT, so you have to change it to RANGE (not familiar with it). Generic. If your application can't do it, it is no use telling the user that it is too difficult, because it isn't, as Nick Harrison explains. /// <summary> /// Generates a FileStreamResult containing a zip file with the EXCEL file in it /// & Since EPPlus internally uses a version of DotNetZip , (take a look at the source code) try and do the same. And because of Excel storing all numbers and dates as double you have to deal with alot of unboxing and type Example //create a new ExcelPackage using (ExcelPackage excelPackage = new ExcelPackage()) { //create the WorkSheet ExcelWorksheet worksheet = excelPackage. NET Core app. GetAsByteArray() method. NET Core example: GemBox Create Excel (XLSX) or PDF from ASP. Add(fileName); Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers I have an ASP. Created Workbook. bytes = package. It accepts the list, a sheet name (so that the excel tab as a specific name. NET MVC: Export Data to Excel from Database using EPPlus Updated on September 20, 2015 Kisan Patel This tutorial will teach you how to export data to Excel file from Database using LINQ in ASP. Is there a way that I can acomplish this? Preferably, I'd like to use the Excel file itself, because the datasets that I use to feed the Excel files, are ASP. Same code works for lesser no of rows Eg. OpenRead(path)) { pck. ms-Excel"; //convert the excel package to a byte array. hi everyone i want the button that generate excel report take all field except the field that contain image i already made the button and its work correctly but it take all field that shown in grid so i want the images show in grid but didn't export to file report how can i do The problem was with the width of the columns. ExcelPackage' 2. After insert data, the user could save the file on his computer, I doesn't know anything about EPPlus so, i made this : Dim ExistFile = Server. Every browser has its own limitations and I&#39;m afraid that in most cases we don&#39;t have control I am trying to generate an Excel file using the following code: public static Stream GenerateFileFromClass<T>(IEnumerable<T> collection, int startrow, int startcolumn, byte[]templateRes Yes, EPPlus provides an overload of the . Stack Overflow for You've said in the comments that the line giving the NPE is: Iterator<Row> rowIter = mySheet. AutoFitColumns() Worksheet. BinaryWrite(ExcelPackage. GetAsByteArray(); //the path of the file. 1 (3. Worksheets. You'll have to use a paid subscription. xlsx file (which works). Now, the problem is that both the Tables' collection and Table objects in EPPlus are ExcelPackage. 5. 'OfficeOpenXml. 5 - 3MB) using EPPLUS. I have a package being created, and then being output to the response. In your controller, you can just return the FileContentResult like this: return File(package. Worksheets Foreword With v5, EPPlus switched to a paid-for licensing model for commercial use. sheet"; [HttpGet] public IActionResult WebSample1() { using(var I tried to use your code but it still returns 'System. GetAsByteArray(); Then, we called the Download() method for downloading the Excel file. UpdateCacheLookupFromItems(System. This is my main problem. net, get the relative OfficeOpenXml. It supports advanced functions. This works fine in the development environment ( How to make columns to be auto width when texts in columns are long? I use this code Worksheet. Office. net application in which I have a js file and an ashx file. We have some C# code that calls ExcelPackage. In this Simply avoid xls. 設定新的專案 命名你的專案名稱，並選擇專案 I have what appears to be a strange problem with C# that I've not been able to figure out, hoping for some help here. GetAsByteArray() to return an array out of dimension range exception. When I upgrade to 5. I've set my using as: using Excel = Microsoft. I have made it into an extension method and refactored it. SaveAs to a MemoryStream), or slower (using ExcelPackage. Occasionally, that save operation throws the below exception: The process cannot access the I am trying to open an Excel document using EPPlus reference/package. Instead of expecting the memory stream to write directly to array and download file wont help, What i did is in my code: Write data to stream and read that back. I want that when excel downloaded it will ask for password. Delete(); // ensures we create a new workbook newFile = new OfficeOpenXml ExcelPackage. . it does not give me anything In our Asp. I know the GetAsByteArray() closes the package but why would that prevent me writing a FileStream? It's nothing to do with the GetAsByteArray() function, it's because the stream is still holding the file open, preventing another function from opening a Introduction We can use multiple approaches to export multiple Excel files. Another method involves using Base64 strings, though it&#39;s less efficient due to increased file size. Making statements based on opinion; back them up with ExcelPackage. My code: using System; using System The problem is not solved but now I know exactly why. NET library that reads and writes Excel 2007/2010 files using the Open Office Xml format (xlsx). WriteAllBytes using (ExcelPackage excelPackage = new ExcelPackage()) { //create a new Worksheet ExcelWorksheet worksheet = excelPackage. Loop through the DataTable columns and determine which ones are DateTime values. 其他資訊 直接進行下一步 D83D is in the UTF-16 high surrogates block, i. Note that the package is closed upon save Namespace: OfficeOpenXml Assembly: EPPlus (in EPPlus. SaveAs(FileInfo(filePath)) (which works just fine and as expected), while the GetAsByteArray Method ExcelPackage Class Example See Also Send Feedback Saves and returns the Excel files as a bytearray. I have some section in application from where user can download data in excel file. AddEntry("File Name", fileContent) multiple times before calling zipFile. Either the entire worksheet is locked (if I include the IsProtected statement) or nothing at all. string filePath = "C:\\ExcelDemo. 5 (my project is using . Here is my code for file creating: private byte[] ExcelFileCreate() { using (var excelPackage = new ExcelPackage()) { excelPackage. By it is resolved by commenting How can I delete a column of a . xlsx"); if (newFile. Contribute to JanKallman/EPPlus development by creating an account on GitHub. This is the top-level object to access all parts of the document. Save() and package. 1 release of EPPlus library to try to access a worksheet in an Excel file. Using the xlsm file of size 10MB loading into ExcelPackage and performed some read/write operations into the xlsm template. For example you have a folder called 'temp' inside the wwwroot folder to contain all the newly generated excels. Font. IsolatedStorage. I want to be able to write the fine contents in the HTTP response object and send it along such that the client would then get a file save as dialog and could choose a location to save the file. ExcelPackage and Writing it to Excel using GetAsByteArray. If you find one, then set the format for the column as shown below. Note that the package is closed upon save Saves and save See Also I have a weird issue here using EPPlus to create some . When I create file and open up the file, the following pop up message shows: We found a problem with some content in 'ExcelDemo. Workbook the path variable currently is not being used. But after i deployed and try to download from client, it returns nothing. These are the top rated real world C# (CSharp) examples of OfficeOpenXml. Its a tough nut to crack since you would have to use reflections if you truly want it to be generic. Response. Cannot implicitly convert type 'OfficeOpenXml. The issue is that when I export a CSV file it displays a warning "file format and extension of fileName. GetAsByteArray() to return a generate Excel file. Workbook; var wsheets = wb. GetAsByteArray(), "application/vnd. ArgumentException : An item with the same key has already been added. GetAsByteArray ExcelPackage package=new ExcelPackage(); /**** Create the document ****/ Byte[] bin = package. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 1. Worksheet Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Is there any way to encode the ExcelPackage() to UTF-8 format. Worksheets Your ExcelPackage object is an IDisposable which means it gets disposed at the end of your using{} block. GetAsByteArray(), "application The limit of records (row items) that can be exported to Excel from client-side function varies between browsers. Before you start to code against EPPlus you need to set the static ExcelPackage. 3. Problem: I want to access the sheet without having to save the file. xlsx"); UPDATE: ExcelPackage package= new ExcelPackage(); /**** Create the document ****/ Byte[] bin = package. ExcelPackage. LoadFromDataTable(dt [C#] EPPlus 讀寫(read/write) Excel檔案 懶人包範例程式碼 You cannot add a formula like that to EPPlus. This "Table1" thing wasn't a named range but a table, which I can access through the "Tables" collection of the worksheet. ExcelReportGenerator. NET MVC application. 建立新專案 選擇ASP. sheet", "test. net Framework is 4). Add("Sheet 1 Example //Using File. You can fill your stream by doing var stream = new MemoryStream(pack. I've got a button that when clicked, I'm using javascript to call a controller. ExcelPivotTableCacheField. See my full demo below. I am making an API using C# that takes excel files and transforms and saves its data to database. You'll either need to enhance EPPlus to I was trying to create excelpackage download function. GetAsByteArray Method ExcelPackage Class See Also Send Feedback Overload List Name Description GetAsByteArray () Saves and returns the Excel files as a bytearray. cs. Is there a way to reduce the byte I'm trying to fill an existing xls file with EPPlus, but i never use it before. The reason is that it's expensive. multiple worksheets in a single Excel file. e. zip extension and open it with 7zip I am developing a class (in a C# MVC 5 project) that originally had a using block within a single method, and it got to be very huge after placing formatting statements and other code in the using block. net-core-mvc export-to-excel epplus Share Improve this question Follow edited Oct 16, 2016 at 2:36 MJH 2,307 7 7 gold badges 19 20 Marius Istudor 165 FileInfo newFile = new FileInfo(outputDir. 1 from v. openxmlformats-officedocument. BinaryWrite(byte[] arr). CopyToDataTable(); is caused by the fact that CopyToDataTable is an extension method for IEnumerable<DataRow> but your query is an IEnumerable<anonymous type> . I wanted to include how I used it in my project. Collections. SaveAs(stream). Just use it directly. Table. The way it is written now, it is the ExcelPackage package object is using its save method and then I am calling that ExcelPackage in the codebehind file where I am writing it out using Response. For example I assumed I just needed to input the file location of a CSV file I am using, but it does not Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers The Problem I'm trying to create a small program that uses an Excel template to create an Excel document and then writes to several cells using EPPlus. The only relationship is it copies its bytes in your call to Load afterwards they are separate. 0 Hi i am using EPPlus to create xslx file with some data dump. xlsdoc. 4, it gives an error: "An item with the same key has already been For some reason, passing in a concatenated string like this would cause the excelPackage. Delete(); // ensures we create a new workbook newFile = new FileInfo newFile = new FileInfo(outputDir. It allows you to create Excel spreadsheets on the server. . xlsx"); using (ExcelPackage package = new ExcelPackage(newFile I am using a POST method to get a byte array of an excel file c# server side implementation: downloadExcel() { . It is unable to copy the image. rowIterator(); Your problem is that you're not checking if the sheet you tried to fetch really existed. if public Task<InvoiceFileModel> GenerateAsync(Invoice invoice) { using (var excelPackage = new ExcelPackage()) { var excelWorksheet = excelPackage. Net Core API application we load a templated Excelfile using EPPlus. It's been replaced over 10 years ago by xlsx. If you try to fetch a sheet with an invalid name, you'll get back null. It adds 3 sheets, 2 of which have values. The issue is at the line: ExcelPackage. GetAsByteArray(); //create a SaveFileDialog instance with some properties. ContentType), not an updated html page where the GridView has been filled with FileInfo newFile = new FileInfo(outputDir. Format("FileName There is no such method native to EPPlus unfortunately. XLSX files. I'd recommend looking into the Microsoft. Interop. My my function which i want to format is as follows private void GenerateXLSXFile(DataTable tbl) { ExcelPackage excelPackage = new ExcelPackage(); ExcelWorkSheet excelWorksheet = excelPackage. GetAsByteArray(); return File(bytes, "application/vnd. I'm adding multiple files, so I need to use zipFile. Excel; I'm guessing you'll want the application to be invisible: C# (CSharp) OfficeOpenXml. spreadsheetml. I tried converting to bytearray and using other types but to no avail. But i have a case where i have 40,000 rows in dataset. Depending on I am facing a problem in my application. GetAsByteArray xlsdoc is a properly loaded ExcelPackage object. If I run the following code with the second line commented out as shown, no exceptions are thrown. Cells["A1"]. LicenseContext property. You can rate examples to help us improve the quality of I have an asp. byte[] bin = excelPackage. Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand Rename the xlsx to . FileResultDto fileResultDto = new FileResultDto { Data = FileInfo newFile = new FileInfo(outputDir. Col I know this is an old question, but I use the code below and it Context I create an Excel file with OfficeOpenXml, but nothing is returned to browser. Parsing issue in the Value function Version 5. wsDt. Net MVC. Delay(5000); because it is only available in Framework 4. This controller should create an excel file and return it to the user giving them Your method looks fine. Using base64string, download multiple files next article. GetAsByteArray(Boolean save)\r\n at OfficeOpenXml. i found some code from a post but this is not working I am looking for code to download a file to a clients pc, I would like to not store the physical file and worry about deleting it at a later stage. It is again working perfectly on local machine. What version of EPPlus are you using? What o/s do you run on your server? Did this occur when you changed something in your environment or upgraded EPPlus to a newer version? We upgraded to v. – amartin unfortunatelly problem is caused by none of these. You do not manipulate your output stream, hence you will get no result. but on Here's a method to export any arbitrary list into an excel sheet. PivotTable. If I comment out the first line and uncomment the second line, ExcelPackage. SaveFileDialog saveFileDialog1 = new at OfficeOpenXml. You need to add proper Address. as I applied it on live server as select top I have two controller actions and js in a view in an ASP. GetAsByteArray()). So you would need to Why don't you return a FileContentResult? Since the Excel library you are using can return the sheet as a byte array, this could work for you. it's part of a single codepoint split into two parts. I would like to create the Excel file in memory and then allow the u I've looked into ways of manipulating Excel files using c#. When I try either of the following methods I get a System. GeneratePackageBytes(List1 columns, IList I'm not sure what to do with that example. NET. You can rate examples to help us 目的 將資料匯出成excel 同步更新於個人部落格 EPPlus範例 1. net MVC. GetAsByteArray()\r\n at Serenity. For downloading, please check our ASP. AutoFitColumn() 'on all columns' Worksheet. NET page where a user provides an ID, and then we pull some data from the DB and put it into an Excel spreadsheet. Add("Sheet 1"); //add some text to cell A1 Please, give me an opinion, how to make automated table with headers (row1)? I took some of teh code from the Internet, and I adjusted to my needs. Using AutoFit() in all 目的 將資料匯出成excel 同步更新於個人部落格EPPlus範例 1. In that case you just need to use a html form to post instead of using the js function. Delete(); // ensures we create a new workbook newFile = new GetAsByteArray causing delay of 2-3 minutes to generate the byte[] response from the package. xlsx) file and store it using EPPLUS for some huge records (around 20k rows and 1. You need to persist it somewhere outside of the using block before it gets disposed. The problem is that I want to remove one of the columns of information in the report file by Mubashar Ahmad's answer helped me, thank you for that. The binary equivalent to xlsx is xlsb, not xls. ExcelPackage()) { using (var stream = File. It seems to work great on windows. 0 Features Support for extended chart types and Stock charts: Four types of stock charts: High-Low-Close, Open-High-Low-Close I'm late to this question but may be it will be helpful for others. XLSX file with EPPlus in a web application? I use EPplus for generating Excel reports and a stored procedure to get the data from database. When i try it on my server or on my local development server, the download button works and it sends Excel file to the browser. 0 license) or Commercial if you have a commercial license. Use EPPlus. Numberformat. Delete(); // ensures we create a new workbook newFile = new I added a sample web app to show how to use this library in an ASP. Now I have to generate the same report, but in PDF format. And then you can serve it as static content on the page. Add("Sheet 1"); //add some text to cell A1 The scenario is simple - I need to have many worksheets in a single excel file. I have tested for 5. Save(stream); and returning the zip file to the client. OutOfMemoryException' on that same line. I think in order to return the sheet you need to need to refactor code a little. ToArray() method. GetAsByteArray()); Is there a way to stream the response directly from the ExcelPackage Here are some number format options for EPPlus: //integer (not really needed unless you need to round numbers, Excel will use default cell properties) ws. Here's how you can achieve that. GetAsByteArray(); Response. worksheet I am downloading the excel file with password using epplus library. 0 Features Support for extended chart types and Stock charts: Four types of stock charts: High-Low-Close, Open-High-Low-Close ExcelPackage Class ExcelPackage Members ExcelPackage Constructor ExcelPackage Constructor ExcelPackage Constructor (FileInfo) ExcelPackage Constructor (Stream) ExcelPackage Constructor (FileInfo, Boolean) ExcelPackage Constructor (FileInfo To export multiple Excel files, various approaches can be used, including downloading a zip file, creating multiple worksheets in a single Excel file, or calling APIs multiple times to retrieve files. 0. But, when invoking the GetAsByteArray() method, (ExcelPackage xml = new ExcelPackage()) { foreach (var mainValueItem in values) { using (ExcelWorksheet {mainValueItem I'm trying to have a website export a . ExcelPackage' does not contain a FileInfo newFile = new FileInfo(outputDir. Option 1: save to wwwroot You can generate the Excel and save it to the wwwroot folder. I have tried following code. Making statements based on opinion; back them up with I don't know what the datatype is of products, but why not bind it directly to the sheet? worksheet. To use v5 in a non-commercial setting you need to put this static line of code somewhere that will run: ExcelPackage. 2. LicenseContext = LicenseContext. Then on the first sheet a formula is added that references a different sheet. Worksheets; var settings = wsheets wb is fast wsheets is really slow when my sheets are hidden, really fast when not. GetAsByteArray and using that in the Response). GetAsByteArray(Boolean save) Do you know what could I check? c# asp. NewGuid(). GetAsByteArray - 21 examples found. I am creating an Excel file using the EPPlus library. Generating small output is fine, but generating big output produces an error: System. It is working perfectly on local machine as well as on web server for small amount of data. I need to have 2 SaveAs, 1st SaveAs which is a save dialogue to allow user Open/Save/SaveAs and my 2nd SaveAs to allow the Excel file to be saved Anytime you call . ExcelWorksheet' to 'OfficeOpenXml. However, the I'm using the 3. I can't get the Excel application to open. ) the var header declaration is only for styling purposes and doesn't have any impact on the actual output. Provide details and share your research! But avoid Asking for help, clarification, or responding to other answers. dll) Version: 3. LoadFromCollection<T>() method with a MemberInfo[] parameter for the properties you wish to include. Here is what I have written for a quick test but it deletes all the existing sheets: Print the column names on row 1 ws. GetAsByteArray - 38 examples found. Esses são os exemplos do mundo real mais bem avaliados de OfficeOpenXml. Load extracted from open source projects. I've written the below demo that creates what is essentially the same file, but one Saves the ExcelPackage to a file using ExcelPackage. I have to search my data in a DB. Step 3. What code am I missing? protected void BtnTest_Click(object sender, EventArgs e) { Try this in ASP NET Core to avoid win32 exception: private Using EPPlus I want to add a new sheet to an Excel file but I do not want to delete the existing sheets in the file if any, and I want to insert it as the first sheet in the file. The downloading part is working fine. ElementAt(i) for each property on the same data element. Using the xlsm file of size 10MB loading into ExcelPackage and performed some ExcelPackage package=new ExcelPackage(); /**** Create the document ****/ Byte[] bin = package. FileInfo newFile = new FileInfo("sample. Dispose(), before accessing the memoryStream. GetAsByteArray extracted from open source projects. Call from View We are writing this code from the View side so as to display a button for exporting the If That is because you’re saving it directly to that path, you’re not downloading it. I guess EPPlus doesn't know how to assemble these back together so it can then reencode the single code point in UTF-8. At the moment i create a physical file and then download it, the file name remains the same so it replaces the previous one. ContentType = "Application/vnd. I'm now trying to save the file to a directory and. Save was called before. Worksheet using OfficeOpenXml. I figured it out because it was only a visual glitch, the values in the cells where the right ones. Bold = true; rng this code download the file but i want to save this also on server folder. Some options: 1. GetAsByteArray em C# (CSharp) - 38 exemplos encontrados. As alternative pack. if you have a commercial license. I'm not sure about copying cells There are many ways to achieve that. In your current code it is rather inefficient that you are calling datasource. Unfortunately, the files appear to be corrupt no matter what I try. net without using the Excel interop and have come across EPPlus. Load(stream); } // The next exception on query. NET MVC application to generate and download an Excel file. I have already tried ExcelTextFormat() but does not resolve my issue. Excel reference. Thanks for helping! :) – JosephLYapcengcoJr Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Column(colIndex). GetAsByteArray() and from your action return it as a File instead of FileStreamResult. csv does not match". I am using the Nuget Epplus package to export a model's My excel file is corrupted. Delete(); // ensures we create a new workbook newFile = new I am exporting data in Excel form using EPPLUS Excel Library. Delete(); // ensures we create a new workbook newFile = new Represents an Excel 2007/2010 XLSX file package. LoadFromDataTable(tbl, true); //Format the header for column 1-3 using (ExcelRange rng = ws. I wish there was more intellisense, but it's pretty easy to figure out. @using OfficeOpenXml; FileInfo newFile = new FileInfo(outputDir. IsolatedStorageException: Initialization failed. getting settings one wsheets is loaded is fast. I can also use the ExcelPackage constructor to make an excel file from a byte array like this: var memoryStream = new MemoryStream(excelpackageByteArray) var I'm trying to generate an excel report which may sometimes contain large amount of data (approximately 25,000 records &amp; 2. Zip file download. Here is sample code to use this libarary in ASP. API calls were made multiple times to I have a text file with some information and I convert it to ExcelPackage Object using EPPlus, now I want to know if there is a way to open this object with excel without saving it to a local file? if is not possible can I use a temp directory to save it into a file, and then private static void Main(string[] args) { using (var package = new ExcelPackage(new FileInfo(@""))) { var wb = package. GetAsByteArray() throws exception "Cannot access a closed Stream". But how can I get it to work in Mono (our server is a Linux server). SaveAs(context. GetAsByteArray em C# (CSharp) extraídos de Problem : Want to generate Excel from the datatable. IO. I now need give the user the ability to download this file as a PDF as well. Any idea why ? Code [C#] : public ActionResult ExportToExcel(string[] mails) { using (var ep = new ExcelPa When we see a grid with some interesting data in it in an MVC application we, as users, expect to be able to download it as an Excel spreadsheet. Here's a simple example I'm using to test building a . This can have two different values: NonCommercial if you use EPPlus for noncommercial purposes (see the Polyform Noncommercial 1. So far, after searching a I'm trying to generate excel (. So you need to return the C#如何操控Excel網路上一大堆都是NPOI，但是用過之後個人不太喜歡就找找看其他的套件，就找到了EPPLUS用過之後還滿喜歡的，就在這裡記錄一下如何使用 FileInfo newFile = new FileInfo(outputDir. I haven't tested the code, but it should be the general logic to follow. NonCommercial; - 這一行程式碼設定了EPPlus庫的許可上下文，以確保你遵循其非商業使用許可。 ExcelPackage excel = new ExcelPackage(); - 這一行建立一個新 I can convert it to a byte array using the ExcelPackage class's GetAsByteArray() method. 4. So all header related lines can be removed if not needed. Add in the data from the database and use . HttpContext. xlsm file and I can't seem to find anything that helps. I am using EPPlus for my export to Excel function. 其他資訊 直接進行下一步 DRY Don't Repeat Yourself. using (ExcelPackage package = new I have tried other methods of saving the file, but they are either about equal (such as using ExcelPackage. Empty; using (ExcelPackage I'm not sure what I'm missing here. Not sure if this is right or not. 0 Released: 2020-06-24 Features Support for extended chart types and Stock charts: Hi @KrzysztofSkowronek, Sorry for taking long time to reply this. I have the folowing function to return a FileStreamResult for my ASP. List<object>) in ExcelPivotTableCacheField. Here in a download button click Im calling handler file in ajax call and retrieving sql table data in a json formatted string/ Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers Problem : Want to generate Excel from the datatable. But for my issue it is because I got image inside the other worksheet. Exists) { newFile. How can download this file to my local machine? This is my code public void CreateExcelFirstTemplate() { var fileName = "C:\ExcelDataTest\ExcellData The stream object is not tied to the package. Delete(); // ensures we create a new workbook newFile = new I'm writing data to Excel using the EPPlus library. So I had to remove it first and add the image back after copying. NET Core Web API專案範本，並執行下一步 2. Save the file to disk first with something like this: var 目的 使用epplus製作長條圖 同步更新於個人部落格 EPPlus圖表範例 1. I have created a package as follows: var file = new FileI I am using the EPPlus library to generate an excel file which I successfully save in a folder on the server. What am I Learn epplus - Save to disk with SaveFileDialog Example //Using File. GetAsByteArray() (might be others) in EPPlus they have the side effect of closing the package. Cells["A1:A25"]. private const string ContentType = "application/vnd. Reporting. public FileContentResult Download() { var fileDownloadName = String. ToString(); using (MemoryStream EPPlus is a . You do not need to even use a stream - better to let the package handle it on its own like this: var fileinfo = new FileInfo(path); if I am using the code below to export records in a datatable to an excel file using EPPlus. Result EPPlus version 6. If you are using the GetAsByteArray, it's not necessary to pass a MemoryStream to the ExcelPackage. Delete(); // ensures we create a new workbook newFile = new In this a assembly, i was exporting excel file directly to the local disk but now i am trying to do this in two steps: first to write it to memorystream , and then save the memory stream to the local disk. I've used it and it worked great. 0 in attempt to correct the problem, but C# (CSharp) OfficeOpenXml ExcelPackage. Cells GetAsByteArray corrupted the package if ExcelPackage. public ActionResult DownloadExcel() { string sFileName = string. When I use EPPLUS 3. The only GetAsByteArray causing delay of 2-3 minutes to generate the byte [] response from the package. Workbook. I am transforming the excel sheet to base64 and then convert it using epplus to excel sheet. However, if I try and get the byte array then write the stream before closing the stream the file doesn't save. xlsx'. NonCommercial If you're using (var pck = new OfficeOpenXml. Dim excelPackage = New ExcelPackage Dim excelWorksheet = excelPackage. Is there a way to make a column or group of cells locked or read only using EPPlus? I've tried the code below both separate and together however neither seems to have the desired effect. OutputStream); I've also tried: context. Format = "0"; //integer without displaying the number 0 in the cell ws. Style. hws lwd peu vfikok chh xlcsgeser gvdl jpegn fitow jwcst