epplus

问题 I'm using EPPlus 2.9.0.1 with Visual Basic. I have a DataTable with 35 Rows and 4 Columns and the code below: Dim FullFilePath As String = "c:\Report.xlxs" Dim newFile As FileInfo = New FileInfo(FullFilePath) Using package As ExcelPackage = New ExcelPackage(newFile) Dim worksheet As ExcelWorksheet = package.Workbook.Worksheets.Add("Relatório") worksheet.Cells.LoadFromDataTable(gSystemTable, False) package.Save() End Using When method 'LoadFromDataTable' is called, I get an ArgumentException

问题 The objective is to create an excel file in memory and download it in the browser by using an API built in ASP.Net Core, however saving the excel as a stream and converting it to a byte array and then opening it on excel (Office 365 version 1803) gives the error: Code Byte Array: public IActionResult Export() { byte[] bytes; MemoryStream stream = new MemoryStream(); using (ExcelPackage package = new ExcelPackage(stream)) { ExcelWorksheet worksheet = package.Workbook.Worksheets.Add("Employee")

问题 I've tried to follow this one: Conditional Formatting by Expression using EPPlus But in my case, the excel file was corrupted and give me option to recover with rule removed. I want to achieve this (simplified): screenshot Here's my codes (for column A): ExcelWorksheet ew = ep.Workbook.Worksheets.Add("Sheet1"); var cells = new ExcelAddress("A2:A5"); string formula = "ISNUMBER(SEARCH($A$1;C2))"; var condition = ew.ConditionalFormatting.AddExpression(cells); condition.Formula = formula;

问题 I'm trying to use the standard .Clear() method for an EPPlus spreadsheet without any luck. Anyone know how to clear all the data in a column using the EPPlus plugin? Below is what i have so far. Does not throw an exception but doesn't work at all. if (File.Exists(path)) { //Connect to spreadsheet FileStream stream = File.Open(path, FileMode.Open, FileAccess.Read); FileInfo file = new FileInfo(path); _package = new ExcelPackage(); //Pull data into EPPlus object _package.Load(stream); _sheet =

问题 I'm trying to create this chart using EPPlus: Area Imports Exports North America 9.00010837 14.54751448 South America 7.878137347 4.878011063 Europe 32.41924303 39.37317481 Middle East 6.859031587 12.94288951 Africa 7.611513341 2.938054884 Asia 36.23196633 25.32035526 The result should look like: Here's my code: dataSheet.Cells["A1"].Value = "Area"; dataSheet.Cells["B1"].Value = "Imports"; dataSheet.Cells["C1"].Value = "Exports"; var row = 2; foreach (var item in items) { dataSheet.Cells["A"

问题 I would like to generate a HTML table from an excel file. The EPPlus package provides a .net API for manipulating excel file. I would be happy to know whether it is possible to generate a HTML table code from an Excel file using EPPlus? I couldn't find anything on the documentation, but intuition tells me that there should be a way to do it Thank you! 回答1: If you are looking for something built into EPPlus, I havent seen anything that will export directly HTML. Best thing would be to bring in

问题 I'm using EPPLUS to build custom Excel spread sheets. One functionality that I'm missing is to change the name of a cell. Is this somehow possible with EPPLUS? If not are there any other ways of doing it? 回答1: Suppose that book is your workbook and sheet is your worksheet. Let try this code snippet var cell = sheet.Cells["C2"]; // Cell or Range you want to name sheet.Names.Add("The_Name_Here", cell); The name will be added to sheet. If you want to access the name in the whole workbook, try:

问题 Is it possible to get a cell value from excel sheet using EPPlus and Linq? Example: I have an excel sheet with 3 columns Column 1 = Userid Column 2 = Email address Column 3 = Full name Now i would like to return the email address where userid = x I hope it's more clear now. 回答1: Suppose Column 1 is a , Column 2 is b : var sheet = excelPackage.Workbook.Worksheets[sheetname_orSheetIndex]; var objs = from cell in sheet.Cells["a:a"] // a:a is the column a, Userid where cell.Value.ToString()

问题 Is it possible to create a copy/clone of a shape in an Excel worksheet using the EPPlus library? I know I can get an existing object with var shapeExisting = ws.Drawings["ShapeName"]; ( ws being the Worksheet object) and a create new shape with var shapeNew = ws.Drawings.AddShape("NewName", eShapeStyle.RtTriangle); However, I'm unable to find a way to clone shapeExisting . 回答1: Seems like there's no built-in functionality, so until I find a better solution, I added the following method to

问题 I am using this code: ExcelPackage pck = new ExcelPackage(newFile); var wk = pck.Workbook.Worksheets.SingleOrDefault(x => x.Name == "Content"); pck.Workbook.Worksheets.Delete(wk); But in delete it gives me "IndexOutOfRangeException", but I am trying to delete from object, I have tried to delete by index "1", I just have two worksheets, and the same exception. The file and worksheet is not null, but when I execute delete in anyway I receive the "IndexOutOfRangeException". What's happening?