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