I am having issue reading in some worksheet from a workbook using C# and EPPlus.
Error Message
name contains invalid characters
Even after multiple checks on the worksheet name, file name and column headers within the workbook to make sure there is no invalid characters, I am still facing the same error.
However, when I move the worksheet that i need from that same workbook to a new Excel file and save it with the same file name and worksheet name, I have no error while reading in.
Does anybody know how to solve or even encounter this problem?
Code
using (ExcelPackage xlPackage = new ExcelPackage(mStream))
{
//WorksheetId = 5
var ws = xlPackage.Workbook.Worksheets[WorksheetId]; //This is the part that is causing error
for (int i = 1; i <= ws.Dimension.End.Column; i++)
{
dt2.Columns.Add((i - 1).ToString());
}
}
Came across this LINK and realized this is actually a bug in EPPlus for version 4.5.2.2 onward.
After reverting back to the older version, everything works fine.
There is a change the "name" as mentioned in the error is not the sheet name.. There is a section in the Formular tab of the Excel software called "Name Manager".
There you will find list of names and references there. The error above per the source code of EPPlus is generated when EPPlus tries to validate the name range.
I had to modify the EPPlus source code to ignore the error since the file i was dealing with was locked and needed to be preserved as it was.
Related
I am currently comparing different files with each other and put the output in an Excel Workbook with multiple worksheets (one per file comparison) using EPPlus 4.5.3.3.
The worksheets are simple ranges - no tables.
Sometimes it is required to move the content of one Excel Sheet to a certain row in another Excel Sheet.
For this I am using the InsertRow function of EPPlus. The function itself does the trick and inserts the content at the desired row.
However, when opening the Workbook I receive these errors:
The content of that XML file is the following:
<?xml version="1.0" encoding="UTF-8" standalone="true"?>
-<recoveryLog xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main">
<logFileName>error044200_02.xml</logFileName>
<summary>Errors were detected in file 'C:\Users\...\test.xlsx'</summary>
-<repairedParts>
<repairedPart>Repaired Part: /xl/worksheets/sheet5.xml part with XML error. Load error. Line 1, column 0.</repairedPart>
</repairedParts>
When I am adding the content at the last row without using InsertRow everything is working fine.
Also, if I save the ExcelPackage immediately after using InsertRow the error is also present, so it definitely has something to do with this function (also if I am only using one Worksheet). After using InsertRow it seems like the whole formatting of the respective Excel Sheet is screwed up. The inserted content appears to be right though.
The excel is initially created from an empty template excel that contains nothing but the header names (also had the same issue with a template without anything inside):
The following code can be used to reproduce (this is just an example - in my case every sheet has more than 50 rows):
FileInfo filePath= new FileInfo(fileName);
excel = new ExcelPackage(filePath);
ExcelWorkbook wb = excel.Workbook;
foreach (ExcelWorksheet ws in wb.Worksheets)
{
int i = 5;
ws.InsertRow(i, 1);
//same effect with ws.InsertRows(i, 1, i-1)
ws.Cells[i, 1].Value = "test";
ws.Cells[i, 2].Value = "test";
//excel.Save();
}
excel.Save();
Although my answer is not based on EPPlus, have you looked at this post ?
Inserting new rows and moving exsisting ones with OpenXML SDK 2.0
I am guessing that you are getting errors because the newly added rows from the ws.InsertRow function are not updating the required row indexes. This is mentioned in the post.
Also there is a recommendation in the comments "To anyone who is getting an error when opening the file try this line before you save your document'... xlsFile.WorkbookPart.DeletePart(xlsFile.WorkbookPart.CalculationChainPart);
i've got this very strange error while trying to get the worksheets (just worksheet names) from excel (xlsx) file with EPPlus.
using (var ep = new ExcelPackage(new FileInfo(filePath)) {
foreach (var ws in ep.Workbook.Worksheets)
....
}
This works flawlesly (why shouldn't it right), but from time to time i find excel file that just throws System.NullReferenceException while trying to get worksheets.
Exception thrown: 'System.NullReferenceException' in EPPlus.dll
The thing that baffles me the most is that when i debug this and go step by step everything works fine.
This is the StackTrace:
at OfficeOpenXml.ExcelRangeBase..ctor(ExcelWorksheet xlWorksheet, String address)
at OfficeOpenXml.ExcelNamedRangeCollection.Add(String Name, ExcelRangeBase Range)
at OfficeOpenXml.ExcelWorkbook.GetDefinedNames()
at OfficeOpenXml.ExcelPackage.get_Workbook()
at isef.winformapp.Helpers.ExcelUtilities.GetWorksheets(String filePath) ...
Im just wondering whether someone has encountered a similar error
You can download and try one of those 'not working' xlsx files here if you want to try it yourself.
It's an empty xlsx file with two empty worksheets.
The error occurs because there are defined names in the workbook that refer to a sheet/table/range that no longer exists. Referenced from here
First I was able to duplicate your error. Second, I deleted these Names and your code worked fine.
Unfortunately, the exception happens anytime you reference the workbook so I see no clear way to solve this outside the package.
var wb = ep.Workbook; //also throws error when wb has invalid names
I am generating several excel copies from a template (its really big).
For that First I am taking the template from a file location, then based on a loop for every iteration I am creating a new ExcelPackage(newFile,Template).
After that I am taking the exact ExcelWorksheet that I have to edit.
Then after editing I am Saving as the file as newFile. The time of opening the saved file Two problem is occurring:
If there is no Excel instance is running on the PC then the saved file is opening but with no data.
If the Excel instance is running then the saved file is opening with Warning message but working. "Problem with some content with Excel. Do you want us to recover?" and "Excel was able to recover some unreadable content "
string templateExcel = #"Location\template.xlsx";
FileInfo templateFile = new FileInfo(#"Location\newFile.xlsx");
using (FileStream templateExcelStream = File.OpenRead(templateExcel))
{
using (ExcelPackage copyExcel = new ExcelPackage(templateExcelStream))
{
ExcelWorksheet presentWorkSheet = copyExcel.Workbook.Worksheets["Name"];
presentWorkSheet.Cells[4, 2].Value = Value from condition;
copyExcel.SaveAs(templateFile);
}
}
Thanks all of you for your valuable time. I got the solution.
For me the issue was in the template itself as it contained invalid references to lookup tables. I found this in Formula -> Name Manager.
I suggest that you check the template if you face this issue.
I am creating an excel with drop down values using Open XML (DocumentFormat.OpenXML). There are no errors in the code and excel gets created. But I get couple of errors while opening the excel. Excel gets opened with data correctly if I click OK to the errors and go ahead. It looks like the problem is due to the addition of namespace in order to have the dropdown values.
Question is, Is there any way to get rid of the error?
Error 1:
We found a problem with some content in 'sample.xlsx'. Do you want us
to try to recover as much as we can? If you trust the source of this
workbook, click Yes.
Error 2:
Errors were detected in file 'Sample.xlsx'
Repaired Records: Cell information
from /xl/worksheets/sheet2.xml part
Repaired Records: Cell information from
/xl/worksheets/sheet3.xml part
C# Namespace addition for creating excel:
worksheet1 = new Worksheet() { MCAttributes = new MarkupCompatibilityAttributes() { Ignorable = "x14ac" } };
worksheet1.AddNamespaceDeclaration("x14ac", "http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac");
I have a C# application which purpose is to store a big amount of data. I am using Microsoft.Office.Interop.Excel (Microsoft.Office.Interop.Excel.dll Version 14.0.0.0) to help me accomplish this. I have Excel 2007 installed.
I use the following lines:
excelApp = new Microsoft.Office.Interop.Excel.Application();
excelWorkBook = excelApp.Workbooks.Add(misValue);//*--------> LINE NOT WORKING */
excelWorksheetBeingWritten = (Excel.Worksheet)excelWorkBook.Worksheets.get_Item(1);
My code then iterates through a big list of objects, and each time a row must be written I do something like:
var startCell = excelWorksheetBeingWritten.Cells[excelLineCounter, 1];
var endCell = excelWorksheetBeingWritten.Cells[excelLineCounter, 2];
string[] tmpArray = new string[2] { stringVar1, stringVar2 };
tmpRange = excelWorksheetBeingWritten.Range[startCell, endCell];
tmpRange.Value = tmpArray;
When excelLineCounter exceeds 65536, the "HRESULT: 0x800A03EC exception" is thrown. I am perfectly aware of the (in)famous pre-Excel2007 row limit (which is precisely 65536). What I don't understand is why the interops are using that limit, when Excel 2007 (my version) has a documented limit of 1.048.576 rows.
On the other hand, if I replace the above "LINE NOT WORKING" by the following, it seems to use the Excel 2007 row limit, and the exception vanishes:
excelWorkBook = excelApp.Workbooks.Open(#"H:\Workbook1.xlsx");//*--------> LINE WORKING */
Note: "Workbook1.xlsx" is an empty workbook previously saved as "Excel Workbook (*.xlsx)"
Can someone please tell me what kind of sorcery do I need to do in order to configure the Excel Interop objects to use the Excel 2007 limits by default, preferably without having a previously saved empty .xlsx file laying around?
I encountered a similar issue yesterday and the solution is to change your Excel settings to create xlsx files by default.
In Excel: File -> Options -> Save -> Save files in this format
Your default is probably 'Excel 97-2003 (*.xls)' like mine was. If you change it to 'Excel Workbook (*.xlsx)', your code will work.