Editing an existing excel in C# with NPOI - excel

I need some help to solve an issue I'm facing using NPOI 2.3
I've created an excel with 1 jpeg picture and some shapes (just to group the fields)
In some cell I've put a value that starts with ##
I need to open the excel, replace cell containing ## with correct values coming from db and save the result.
All works well except when I try to reopen the modified xslx file I got an error about Drawing shape corrupted. The values are ok but all shapes and the picture are removed.
Here you can find the link TemplateFile
Can someone helps me to identify the problem ?
Many thanks
Fab

Related

Excel display wrong values from XML file

Can somebody help me with this problem?
We are receiving XML files with some data, but then I open that XML file using Excel values are not the same like when I use notepad to open same XML file.
For example
This is what is diplayed when I open using Excel
And when i open it using Notepad in the same place value is different
as you can see, values are different in last digit.
Excel reads it as "0" for last digit, but in Notepad last digit is "1".
Does somebody knows a reason why this is happening?
Since there is no response over here, i am putting link from microsoft community where i also started a dispute and there are some replays (not exactly solutions) but explanation why this scenario is happening
https://answers.microsoft.com/en-us/msoffice/forum/all/opening-xml-using-excel-values-wrongly-imported/87b69b13-bbd4-4c02-9776-b2644084935b?page=2

Epplus generated charts missing in Numbers

I've found out a compatibility issue, trying to save .xlsx file with Epplus.Core library.
If I open generated file in Excel 2016, everything is perfect, but if I use macOs or iOs Numbers application, then all the charts dissapear.
I get an error:
"Charts of unsupported type or size were either imported as an image or removed".
Also want to notice, that during tests sometimes charts appeared in file, but axis had wrong scale (values were about 4kk, but axis max limit was just 4).
It's very important for me to create file, that could be read correctly in both Excel and Numbers applications.
I've thought about exporting worksheet to .pdf, but I have several worksheets, and it would be problem to export two files (one .xlsx with data and another one .pdf with charts) in one moment.
Is there any other solution for this issue?
Finally the problem was in naming of worksheet with chart's datatable.
It should be no spaces in worksheet name, then Apple Numbers successfully display all the charts.
Also chart with type = eChartType.BarClustered can become a problem.
I don't know why, but Apple Numbers throw an error, if there is chart with this type on worksheet.

Docx4J Generated XLSX file is always corrupt

TL;DR: Excel Workbook generated by Docx4J always says corrupted but I can't determine what Excel doesn't like about the underlying XML, let alone how to fix it.
My use case is as follows:
I am trying to produce an excel workbook with charts and graphs automatically on a regular basis. Only the raw data will change but everything else will dynamically update as the raw data is changed.
So I built an excel workbook which has a number of charts and graphs being generated by a sheet of raw data. I am using it as a template. All values of the raw data are numeric. The intent was to use Docx4J to read this 'template' and to populate the raw data sheet, then save it as a new file whereupon opening will initiate the recalculation and the charts and graphs will update. Since I am new to Docx4j, I basically decided to do baby steps by first seeing if I could open and read the contents of the cells; which I could. So far so good. I also could change the values of the cells but I could only verify this programatically by writing out to the console the location and value before a change, then the location and value after the change (ex. A1=45 followed by A1=55).
My problem starts when I try to open the resulting file. It generates, looks to be about the right size but Excel claims it is corrupted. It does try to recover what it can, but ultimately fails and the workbook won't even open. For troubleshooting, I opened up the generated xlsx and confirmed all the various XML files that make up an xlsx file were present and readable so I am concluding either something is missing or some part of the XML coming out the other side is not what Excel wants. Further troubleshooting involved creating an empty workbook (no data, 1 sheet) as my 'template', opening it and then saving it back to the file system with a different name and simply trying to see if I could open it in Excel but no dice. This has me ruling out anything to do with my attempts to write or add data to the sheet.
Relevant Environment Information:
'template' workbook is being generated on a Windows 10 64bit machine
My docx4j code is executing on a Debian 10 Linux machine running OpenJDK 11.0.4
My version of Excel both to create the 'template' and open the copy is Excel for Office365
I am running Docx4J v11.1.3 but I also tried with v8.1.5(both cases I had to use the Reference Implementation of JAXB to get around a marshalling error when trying to save)
I did see another post on Stackoverflow here about an issue related to fonts in Linux environments so I made sure to install the MS TT Corefonts but it didn't help my problem.
I ran the entire unzipped directory through BeyondCompare and there are some differences but I don't know which are just artifacts of the two different OS' or even which differences matter. Mostly they are:
small differences in file size
boolean values showing as "1", "yes", or "true" but not the same way for both files
namespaces and attributes in one file but not the other
Sheet1 from my blank workbook, before and after
All ideas are welcome.
Please try the just-released docx4j 8.1.6, which fixes handling of xlsx files created by recent releases of Excel. This was https://github.com/plutext/docx4j/issues/389

Excel - Inserting a pdf picture using a formula

I want excel to recall a certain PDF document and insert it into the worksheet if certain cells match the allocated PDF info.
I've tried using the object insert but it only gives me an un-editable formula which of course is:
=EMBED(" Forms.CommandButton.1")
Which does not work.
I then moved on to trying to nest IF & AND statements, but that doesn't get me very far, seeing that I don't know how, or whether it is possible to add a PDF document into that formula.
I've tried using hyperlinks but it seems that the hyperlinks are set and do not work with IF or AND statements.
Any suggestions or solutions are welcome.
Thanks!

Excel Error: Removed Records: Sorting from /xl/worksheets/sheet10.xml part

I'm almost sure I will have to create a new excel file, but maybe at least here I get some ideas what was the source of the problem.
My excel file is constantly giving the following error:
Excel found unreadable content in 'filename.xlsm'. Do you want to recover the contents of this workbook? If you trust the source of this workbook, click Yes.
So I do. And the file opens as repaired showing:
Removed Records: Sorting from /xl/worksheets/sheet10.xml part.
The detail is that I don't even have a sheet10
Its a big excel file full of custom-objects. But I have no DB connections or autofilter so could not relate to AutoFilter Criteria Using Array (Error) - Too Large String? or xlsx error: "Removed Records: Named range from /xl/workbook.xml part" when tried to resolve errors.
Anyone has a clue what's going on?
tks in advance
try clearing the sort before saving down the workbook. When this happened to me I had my sheet references mixed up so the sort wasn't cleared
Sheets(yoursheetname).Sort.SortFields.Clear
I am afraid I cannot explain what is going on, but I had similar experience several times - always with XLSM file. In the latest case I learnt that Excel did not like the same range name used twice, when defined as Worksheet range name (we assumed it is safe to use it that way).
Our troubleshooting path is:
try to save file as XLSB (binary macro file) and either use XLSB file or save it back to XLSM
check file history (we always keep daily snapshots) and find when the problem firstly occurred; use previous version and port your changes
extract the code (via SVN code), create a new workbook and import the code back
Usually Step 1 solves the problem, but Step 3 never failed us.
Awesome,
This issue has been driving me crazy!
It seems that saving as the xlsb (binary) file PLUS adding the clearing of sort fields appears to have sorted out my issue.
I added the following code to the BeforeClose sub, it appears to clear the fields really quick, changes to my Dashboard and prompts for saving.
The xlsb file saved over a mb in file size and appears to load a little quicker!
Thanks for the pointers & support!
Private Sub Workbook_BeforeClose(Cancel As Boolean)
Dim Sht As Worksheet
' Clear all Sort Fields prior to Save & Exit
For Each Sht In Application.Worksheets
Sht.Sort.SortFields.Clear
Next Sht
aa1_Dashboard1.Select
aa1_Dashboard1.Activate
End Sub
I would like to add my own confirmation regarding clearing sort fields in your spreadsheet, as first suggested by Chris. I specifically had the error occur after I used column sorting in a VBA macro, so I deduced that the problem must be column/field-Sort related. It was.
Adding the line:
Sheets(yoursheetname).Sort.SortFields.Clear
after the sort command allowed the sorted columns to remain sorted (in my case), but cleared whatever was causing the
"Sorting from /xl/worksheets/sheet10.xml part." error when the file was next opened.
Many thanks for your support.
I don't know if this will help anyone but it's solved my problem. I had an excel sheet, nothing complex, just contacts, a much used file in Excel 2010 on Win7. Today I was using the 'filter' to select specific groups to email targeted content to. In the middle of selecting and copying to paste into Outlook, the document came up with a pop up as if I was installing something, then the 'installer' both of which I cancelled out of. The Document closed and then on trying to reopen, I was getting the error message. If I chose 'yes' to repair I was given just the subset of my filtered list, so about 40 of my 350 records, the rest lost. I googled and tried different things, including opening in Googledocs google sheets and nothing worked. I never 'saved' the repaired version as my old data wasn't in that. Just now, I right clicked on my document in explorer and chose "restore previous versions" and it brought me to the version of yesterday - thankfully, nothing added to it since then. Opened that one and bingo, it opened fine with ALL the data in it. I know the filter had corrupted it, so will be cautious next time I use it. I don't know why it doesn't like the filter but 4 hours on, i can now calm down and relax! Hope this helps someone.
was having this issue as well. I have a spreadsheet with multiple tabs (maybe 30 tabs?) and had filters on each sheet, and shared on SharedPoint. The error was not enabling editing of the file on SharePoint. I removed the filters on every sheet and uploaded back to SharePoint and the issue is gone!
I did what Chris mentioned above. Clear the sort fields in your spreadsheet.
Sheets(yoursheetname).Sort.SortFields.Clear
Also, save the file as *.xlsb.
That should get it to work.
When you get a message telling that Excel found unreadable.... just click "Open" and then close all the following messages you get.
-In the VBE open the project showing the name of Addin or the .xlsm.. the click anywhere in any module of the workbook as you are going to edit the text of the macro, then click save, select workbook type like Addin select the folder where you want to save it, give it a new name then click "Save", that is all you have to do, the new file you created will ok.

Resources