epplus

I am the middle of writing a program which has to create an excel file on a client machine and then, after they have saved and updated it then I need to import it again and apply the changes to my database. The export bit of it works fine, however when I import from the web application I get zero worksheets in my workbook. If I run it on my development machine, i.e. the website is running on the same machine as the file is located then it works fine. My code is as follows: try { Productsfile = new FileInfo(PathandFileName); } catch (Exception ex) { lblStatus.Text = string.Format("Error getting

I want to use the ExcelWorksheet object from the EPPlus library and retrieve all the cells with values as well as their positions. At the end of the day, I want a dictionary similar to this. Dictionary<KeyValuePair<int, int>, object> values. I am looking for a nice and clean way to extract the cell values into this dictionary for use. I am quite aware that you can reference the cell values directly as below, but is there a nice clean way of extracting all the data ? worksheet.Cells[row, column]; There is no native function in EPPlus to convert a the cells collection to a another collection

//use EPPlus.dll using OfficeOpenXml string path = @"C:\Users\Superman\Desktop\recc\1996.xlsx"; ExcelPackage package = new ExcelPackage(new FileInfo(path)); var sheet3 = package.Workbook.Worksheets[3]; sheet3.Cells["A1:B5"].Merge = true; var mergedId = sheet3.MergedCells[1, 1]; sheet3.Cells[mergedId].First().Value = "123"; // error: System.InvalidOperationException : Sequence does not contain any elements package.Save(); What's wrong? How to do it? To answer why the exception from using the First() method - I would bet money that your sheet3 in excel is empty. Remember that the Cells object

When I read a cell by doing Worksheets.Cells[2,5].value.ToString(); I get a error "System.NullReferenceException: Object reference not set to an instance of an object." What would be a good way to check for null and then assign the value, without having to have a "if" statement. string strValue = Worksheets.Cells[2,5].value==null ? string.Empty : Worksheets.Cells[2,5].value.ToString(); or object objValue = Worksheets.Cells[2,5].value ?? string.Empty 来源： https://stackoverflow.com/questions/11964271/reading-a-empty-cell-gives-object-reference-error

When I published my project and ran it on the server, it worked. EPPlus found all 4 worksheets, iterated through them, and uploaded my data to SQL. But when I run it through my browser, or my coworkers browser, it shows 0 worksheets. Any idea why this might be happening? There's not much to the code at that point, but here's that part: using (ExcelPackage package = new ExcelPackage(new FileInfo(strFile))) { if (package.Workbook.Worksheets.Count <= 0) strError = "Your Excel file does not contain any work sheets"; else { foreach (ExcelWorksheet worksheet in package.Workbook.Worksheets) { EPPlus

I try to download an excel file made by EPPlus.dll from an asp.net c# web form application. but i get Failed - network error. It should be noted that mentioned error just occurs in chrome and the job can be done successfully in another browsers. by the way this error does not occure on my localhost and it happens only on the main server. It would be very helpful if someone could explain solution for this problem. http://www.irandnn.ir/blog/PostId/29/epplus Try this: using (ExcelPackage p = new ExcelPackage()) { //Code to fill Excel file with data. Byte[] bin = p.GetAsByteArray(); Response