Excelpackage getasbytearray GetAsByteArray(), "application/vnd. Worksheets; var settings = wsheets["Settings"]; } Console. GetAsByteArray(), "application/xlsx", "YourReportName. xlsx")) Dim _SheetToCopy As ExcelWorksheet = _Exc I want to build ExcelPackage file on server side and than send allow user to download it. 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 Thanks @BenVoigt appreciate your help. See my full demo below. Add in the data from the database and use . spreadsheetml. I know the GetAsByteArray() closes the package but why would that prevent me writing a FileStream?. Fixed issues. When I use EPPLUS 3. xlsx"); Result is your collection of data (Which Dim bin As Byte() = _ExcelApplication2. For example I assumed I just needed to input the file location of a CSV file I am using, but it does not work, do I have to convert the file to . Occasionally, that save operation throws the below exception: The process ca Represents an Excel XLSX file package. In our Asp. xlsx or is there something other then the XLPackage that I should use?. 3. Thanks for the heads-up here though. sheet", "test. 1. ms-Excel"; //convert the excel package to a byte array. 5k columns). When I create file and open up the file, the following pop up message shows: We found a problem with some content in 'ExcelDemo. You'll need to tweak a bit of your code but nothing major. ZipPackage. Save(); 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I was trying to create excelpackage download function. using (var xls = new ExcelPackage()) { var ws = xls. GetAsByteArray(); } } And send it The limit of records (row items) that can be exported to Excel from client-side function varies between browsers. UpdateCacheLookupFromItems(List`1 It seems that an exception containing the message "Par already exist" is thrown when GetAsByteArray method is called. ExitingMethod)); return File(package. Exporting large amounts of data during export will generate strings that might be too long for the given browser. Add("Demo"); //Load the datatable into the sheet, starting from cell Why don't you return a FileContentResult?. Is there any way to encode the ExcelPackage() to UTF-8 format. HttpContext. SaveAs(context. Value = "processor cell"; return excelPackage. . csv does not match". return File(excel. Save, . CommonConstants. Generating small output is fine, but generating big output produces an error: System. xlsx'. xlsx"); using (ExcelPackage package = new ExcelPackage(newFile) { ExcelWorksheet ws = package. I was searching for a efficient way of mapping the PropertyInfo and the Column into a List, nice use of Func and nice use of Linq, I have reduce the time consuming for the same operation in 7. You can rate examples to help us I have an asp. 00; const double maxWidth = 50. I did flush the MemoryStream too but still get a 0kb file. public static void Createxlsx(string filename) { MemoryStream stream = new MemoryStream(); //create a package using (var package = new ExcelPackage(stream)) // disposing ExcelPackage also disposes the above MemoryStream { var worksheet = package. Name = bookName; p. EPPLUS version 5. 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company 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. It allows you to create Excel spreadsheets on the server. my function which i want to format is as follows private void GenerateXLSXFile(DataTable tbl) { ExcelPackage excelPackage = new ExcelPackage(); ExcelWorkSheet excelWorksheet = excelPackage. Cells["A1"]. Add("worksheet"); package. ), and then about 10 seconds for saving the file, to a location on my C: drive. SaveAs(stream). The formula parser did not handle exponential numbers in calculation correctly. LoadFromDataTable(dataTable, true); pck. 0. BinaryWrite(excelPackage. ms-Excel" ; ExcelPackage package=new ExcelPackage(); /**** Create the document ****/ Byte[] bin = package. at OfficeOpenXml. Here in a download button click Im calling handler file in ajax call and retrieving sql table data in a json formatted string/ The issue is at the line: ExcelPackage. Response. Since you already have the package in memory why not just copy the bytes and save that twice avoiding This is about 4 seconds for creating the EPPlus ExcelPackage, about 1 second to do some formatting (cell comments, dropdowns, etc. BinaryWrite(pck. GetAsByteArray()). When clearing a formula and then insert a row into the worksheet an exception was thrown. xlsx"; //or if you use asp. AddHeader("content-disposition", "attachment; filename=" + departmentName + ". Text. Contribute to JanKallman/EPPlus development by creating an account on GitHub. net application in which I have a js file and an ashx file. Table. FileInfo("file1. GetAsByteArray()); Is there a way to stream the response directly from the ExcelPackage instead of allocating a block of memory You cannot add a formula like that to EPPlus. PivotTable. IO. ExcelWorkbook. WriteAllBytes instead of p. Add("Demo"); //Load the datatable into the sheet, starting from cell A1. I've used it and it worked great. 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I am new to this Open Office XML and I was wondering what file extension the XLPackage takes. GetAsByteArray(); solved my issue! Everything else stayed the same but Excel will actually open the files now! Here's my final code for anyone who has the same issue: I am exporting data in Excel form using EPPLUS Excel Library. You do not manipulate your output stream, hence you will get no result. I have tried following code. I know this is an old question, but I use the code below and it seems to directly address what you have tried to do. In your controller, you can just return the FileContentResult like this:. ContentType = "Application/vnd. Is there a way to r I'm currently using EPPlus and right now I'm trying to copy existing worksheet from an excel file and add the copied worksheet to another excel file. private static void Main(string[] args) { using (var package = new ExcelPackage(new FileInfo(@""))) { var wb = package. EncoderFallbackException' occurred in mscorlib. xlsx")) Dim _ExcelApplication2 As ExcelPackage = New ExcelPackage(New IO. IsolatedStorage. Introduction. GetAsByteArray(); return File(bytes, "application/vnd. Released: 2023-02-24, Github release. I have an Excel file generated on the server by using EPPlus the file is correctly made and using a window. If your fields are defined as int EPPlus will properly cast the columns into a number or float. ExcelPivotTableCacheField. GetAsByteArray() (might be others) in EPPlus they have the side effect of closing the package. Workbook. Value = "My second EPPlus spreadsheet!"; //convert the excel package Ask any epplus Questions and Get Instant Answers from ChatGPT AI: Anytime you call . CreateVBAProject(); before Byte[] bin = p. Add("Sheet 1"); //add some text to cell A1 worksheet. Generic. LoadFromText(file, format); Still giving me errors in An exception of type 'System. To answer your question: try using last two lines File. xlsx"); UPDATE: ExcelPackage package= new ExcelPackage(); /**** Create the document ****/ Byte[] bin = package. 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company private void DumpExcel(DataTable tbl) { using (ExcelPackage pck = new ExcelPackage()) { //Create the worksheet ExcelWorksheet ws = pck. GetAsByteArray() using (ExcelPackage package = new ExcelPackage(newFile)) // add a new worksheet to the empty workbook . public ExcelPackage getSheet(string templatePath){ FileInfo template = new FileInfo(templatePath); ExcelPackage p = new ExcelPackage(template, true); ExcelWorksheet ws = p. ReadKey(); } wb is fast wsheets is really slow when my sheets are hidden, really fast when not. I'd have a look at the EPPlus library, which is based on ExcelPackage. Represents an Excel 2007/2010 XLSX file package. FileInfo newFile = new FileInfo("sample. Every browser has its own limitations and I'm afraid that in most cases we don't have control over them. xlsx"); Response. When clearing a formula and then insert a row into 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. I tried converting to bytearray and using other types but to no avail. Is there a way to r 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company I am exporting data in Excel form using EPPLUS Excel Library. End(); Share. The issue is a normal report with 15k rows and 0. 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Similar problem faced, this worked by just giving me back the template. If I run the following code with the second line commented out as shown, no exceptions are thrown. 5k columns takes 4-5 minutes in 3. ArgumentException HResult=0x80070057 Message=An item with the same key has already been added. ConstructNewFile(String password) I'm not aware why those breaking changes had to be introduced, they're mentioned here: //Read the Excel file in a byte array return pck. It adds 3 sheets, 2 of which have values. Workbook; var wsheets = wb. Save(); // see the various ways to 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company GetAsByteArray causing delay of 2-3 minutes to generate the byte[] response from the package. Unicode; wsData. Using GetAsByteArray() results in data being written, but the file is corrupted. This is the top-level object to access all parts of the document. ) at OfficeOpenXml. GetAsByteArray xlsdoc is a properly loaded ExcelPackage object. I now need give the user the ability to download this file as a PDF as well. 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company 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. OutputStream); I've also tried: context. You need to add proper Address. You can bytes = package. Dim excelPackage = New ExcelPackage Dim excelWorksheet = excelPackage. Insert(TKey key, TValue value, Boolean add) at using (ExcelPackage pck = new ExcelPackage(newFile)) { ExcelWorksheet ws = pck. foreach. The problem is that once it gets to the using a new Xiaoy312 nailed the issue! Adding p. GetAsByteArray(); //the path of the file. I use EPplus for generating Excel reports and a stored procedure to get the data from database. Encoding = Encoding. So you would need to rebuild your package by doing something like package = new ExcelPackage. Some options: 1. GetAsByteArray - 21 examples found. I am using the Nuget Epplus package to export a model's contents to an Excel document, and all of the tutorials I can find place the ExcelPackage variable within a Create advanced Excel spreadsheets using . Source=mscorlib StackTrace: at System. These are the top rated real world C# (CSharp) examples of OfficeOpenXml. Save() at Represents an Excel XLSX file package. NET. ThrowHelper. The stream was closed but not disposed when calling ExcelPackage. You can fill your stream by doing var stream = new MemoryStream(pack. GetAsByteArray() throws exception "Cannot access a closed Stream". 00; C# (CSharp) OfficeOpenXml. Cells. SaveAs, or . Using the xlsm file of size 10MB loading into ExcelPackage and performed some read/write operations into the xlsm template. string filePath = "C:\\ExcelDemo. It accepts the list, a sheet name (so that the excel tab as a specific name. Net Core API application we load a templated Excelfile using EPPlus. I want that when excel downloaded it will ask for password. the file, but they are either about equal (such as using ExcelPackage. Any idea why ? Code [C#] : public ActionResult ExportToExcel(string[] mails) { using (var ep = new ExcelPa I'm writing data to Excel using the EPPlus library. Being new to EPPlus and not very experimented with Excel, I don't understand where I'm doing wrong. Worksheet. openxmlformats-officedocument. xlsx) file and store it using EPPLUS for some huge records (around 20k rows and 1. I am using the code below to export records in a datatable to an excel file using EPPlus. xlsx"); I am creating an Excel file using the EPPlus library. location works fine on the local machine but does nothing when its deployed to a server. Here is my code for file creating: private byte[] ExcelFileCreate() { using (var . Add("demo"); 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Represents an Excel XLSX file package. Add("Accounts"); ws. return File(package. protected virtual void CreateWorksheet (ExcelPackage excelPackage, string name , List < string > fileContents , object model , ViewContext viewContext ) 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Your ExcelPackage object is an IDisposable which means it gets disposed at the end of your using{} block. 1 Dim _ExcelApplication As ExcelPackage = New ExcelPackage(New IO. SaveAs to a MemoryStream), or slower (using ExcelPackage If I run the following code with the second line commented out as shown, no exceptions are thrown. GetAsByteArray() to return a generate Excel file. 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[]templateResource) { using (Stream template = new MemoryStream(templateResource))//this is an excel file I am using for a base/template { using Represents an Excel 2007/2010 XLSX file package. using (ExcelPackage pck = new ExcelPackage()) { //Create the worksheet ExcelWorksheet ws = pck. System. Worksheets. 2. Use EPPlus. Packaging. 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company EPPlus version 6. 2 and I can generate excel file. But i have a case where i have 40,000 rows in dataset. GetAsByteArray(); Response. dll but was not handled in user code Additional information: Unable to translate Unicode Here I have shown to write data into exiting excel file by creating a new sheet in same file. XLSX file with EPPlus in a web application?. Flush Represents an Excel XLSX file package. You need to persist it somewhere outside of the using block before it gets disposed. byte[] bin = excelPackage. Represents an Excel XLSX file package. and somehow re-read the file. getting settings one wsheets is loaded is fast I'm trying to generate excel (. I have already tried ExcelTextFormat() but does not resolve my issue. As alternative pack. The problem is that I want to remove one of the columns of information in the report file by EPplus (stored procedure should not be changed. GetAsByteArray(), contentType How can I delete a column of a . ExcelWorksheet worksheet = at OfficeOpenXml. I have tried these ExcelTextFormat format = new ExcelTextFormat(); format. GetAsByteArray extracted from open source projects. I can also use the ExcelPackage constructor to make an excel file from a byte array like this: var memoryStream = new MemoryStream(excelpackageByteArray) var excelPackage = new ExcelPackage(memoryStream) It might be worth raising an issue on the ExcelPackage site if this is a library you're going to be using a lot (I don't) EDIT: It seems that the ExcelPackage library is quite old and not maintained. Then on the first sheet a formula is added that references a different sheet. Collections. Here's how you can achieve that. It supports advanced functions. . IsolatedStorageException: Initialization failed. Response. 3 Fixed issues. FileInfo("file2. Save(); } That should do the trick for you. 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. sheet", "Reports. WriteAllBytes using (ExcelPackage excelPackage = new ExcelPackage()) { //create a new Worksheet ExcelWorksheet worksheet = excelPackage. Here's a method to export any arbitrary list into an excel sheet. What I want to do is create an excel file using the EPPlus library with some basic data in it that I am pulling from a stored procedure. GetAsByteArray()); // send the file Response. But then, Ive encounter this error: Full Stack I can convert it to a byte array using the ExcelPackage class's GetAsByteArray() method. Dictionary`2. Version 6. Save the file to disk first with something like this: 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company There already is a "Table Name" in the template called "Table1", but I can't seem to access it through the ExcelPackage. Passing FileStream works, but that means the SaveAs saves to disk, which I would like to avoid (I need to pass on a MemoryStream to a service). Worksheets[1]; //position of the worksheet ws. GetAsByteArray(); } } it fails at using (ExcelPackage pck = new ExcelPackage()) The stream was closed but not disposed when calling ExcelPackage. I have learn a lot from this answer. Worksheet GetAsByteArray causing delay of 2-3 minutes to generate the byte[] response from the package. ) 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; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company Hi i am using EPPlus to create xslx file with some data dump. I returned this from the API: return File(excelPackage. 5% which doesn't seems to much, but it goes from 680k ms to 50k ms This solution would be faster if you apply Parallel. Add("demo"); My excel file is corrupted. However, if I try and get the byte array then write the stream before closing the stream the file doesn't save. Zip file download. The EPPlus plugin is open-source and easy to use. multiple worksheets in a single Excel file. We can use multiple approaches to export multiple Excel files. These are the top rated real world C# (CSharp) examples of OfficeOpenXml. Context I create an Excel file with OfficeOpenXml, but nothing is returned to browser. Since the Excel library you are using can return the sheet as a byte array, this could work for you. Save(). The issue is that when I export a CSV file it displays a warning "file format and extension of fileName. Improve xlsdoc. GetAsByteArray(). If I comment out the first line and uncomment the second line, ExcelPackage. It is working perfectly on local machine as well as on web server for small amount of data. CreatePart(Uri partUri, String contentType, CompressionLevel compressionLevel) at OfficeOpenXml. 2 and using (ExcelPackage pck = new ExcelPackage(newFile)) { ExcelWorksheet ws = pck. Add("Some Name"); //**Add Column Names to worksheet!** //**Add data to worksheet!** const double minWidth = 0. 2 I can not create excel file due to OutOfMemory issue, and now I'm using EPPLUS 4. ExcelPackage. net, get the relative In this article, we will learn how to export an Excel file using the EPPlus plugin in MVC. Names collection. We have some C# code that calls ExcelPackage. ThrowArgumentException(ExceptionResource resource) at System. GetAsByteArray()); Response. So your code should look something like that: Example //Using File. GetAsByteArray() and then shortly afterward the C# code attempts to save the same Excel file. 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. BinaryWrite(ExcelPackage. However, the documentation seems limited on this.
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