I am trying to use EPPlus to use an existing Excel file to return a result. this excel file has a lot of formulas and calculations. so rewriting it with EPPlus is not feasible. Is it possible to use EPPlus to trigger existing formulas in an Excel file?
I have tried using the calculate command as well as trying the different modes
workSheet.Workbook.CalcMode = ExcelCalcMode.Automatic;
From what I was able to find searching online, is that the formula's have to be written in a certain way. I could not rewrite the entire file so we ended up going a different route all together
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Here is what I need to do:
I have around 1000 folders, within each of these folders is an excel file that I need to reformat (all the excel files are similarly formatted), I imagine the actual programming part is quite easy but that is besides the point. If I need to run a script on each of these excel files, should I use VBA or VBS?
As far as I understand, VBS can be run from the command line and doesn't require any Excel files to be open but VBA does require Excel to be open in order to run the script but that seems counter intuitive since I need to run a script on not just one workbook but a thousand.
Any help will be appreciated.
Many thanks.
Edit: I should say explicitly, I am trying to convert around 1000 CSV files to XLSX, I have tried python packages such as OpenPYXL and XLSXwriter but they are just terribly slow - it takes around 5 minutes per file.
I suggest you to use Python with the openpyxl package to implement your idea. The openpyxl package is intuitively easy to use, while Python's flexibility will allow you to get the job done in short term.
I am trying to use VBA to select three rows of data in a PDF file and copy them to the clipboard. I have tried third party libraries but I still can't seem to find a simple solution. I can use the cursor to select the data and copy it, so I just want to automate this step with VBA.
I have looked high and low for an answer to this and I feel like it might be really simple and I'm just missing it. I assume I could just use the "highliteList" method in the acrobat library to select the rows, but I don't know how to specify where to begin the selection. There is a header on each page, so I just want to say something like:
For Each header In pdf.pages
NextLine.SelectRow
NextLine.SelectRow
Next header
Selection.CopyToClipboard
Is this possible? I know those methods probly don't exist, I was using it as an example. Does anyone have experience with doing this? Thanks in advance for any help
I found a solution for all those interested. I used Bytescout PDF extractor library to convert the file to .xls format. Then I just parsed out what I needed in Excel since Excel is easy to work with via vb.net.
I guess this question is already out in the internet a lot. I have gone through many of them but still stuck with this problem
My requirement is to get one of the Dataset Tables to a Excel file. I have all the data I need in a Dataset.Table object. Lot of the code on the internet talks about looping through the columns and rows and assigning it to the cell in Excel file. I am able to do that but that really doesnt solve the purpose as large datasets wiht a few thousand rows takes more than 5 minutes to execute and get an output.
Is there any other efficient way to do it? Any input is appreciated as every bit of information is useful to me.
Thank you
EPPlus is free, very fast and very powerful Excel tool for visual studio using the and can do everything you want - They have the functionality to output a datatable directly to Excel using the LoadFromDataTable() function.
You could create a CSV file, and then open it with excel and convert within excel.
If I am understanding correctly you want to do an excel file from a "dataset". You can try using CSV (http://en.wikipedia.org/wiki/Comma-separated_values); the format for CSV is really simple. For performance, store as much as data in the memory and finally write to a file, otherwise if you are writing to a file everytime you are reading a row from a dataset, then it will take much longer. Make sure your file ends with the extension of .csv otherwise MS excel will not open it. Hopefully this helps a bit.
Use GemBox Spreadsheet library (http://gemboxsoftware.com/). It does what you need.
They also have a free version.
The managing director at our company wants me to produce an automated monthly document that saves to a certain place on our system so that he doesn't have to manually input all of the data. I have set up so that the document can save to the correct place in the correct format but my knowledge of VBA is not great.
Tackling this from a 1 question at a time point of view I suppose my question would be is it possible to create 1 very long macro that will accomplish many different tasks over several workbooks. For example we have a report that comes from our ERP (Baan) and shoves all of the data into one cell. Is it possible to create a macro that will accomplish formatting text to columns, then copy data from a cell based on a row reference and then take said data and paste it in to a different workbook? Would it then be able to save the workbook all from just running one macro and if so how long will all of that take once the macro is executed?
Yes I believe this should be do-able, keeping in mind that the file names + location remain the same (otherwise you'll have to edit each month). Create different Subs/Functions and call them in one main macro.
The easiest way is probably to do it step by step. Record macro's and see whether that already helps you out and if not use google & stackoverflow for help! :)
it is entirely possible - but in my Opinion VBA is not well suited to the task. The editor is atrocius at best and it is easy to produce highly specific "spaghetti code".
File operatione are possible, but are not nice. Error handling is 80s style with lots of goto.
So if you want to build something maintainable, build an external Application using Interop or epplus (.net package for reading /writing to excel documents) or an .net addin for office.
I have an Excel workbook that I want to use as a template. It has several worksheets setup, one that produces the pretty graphs and summarizes the numbers. Sheet 1 needs to be populated with data that is generated by another program. The data comes in a tab delimited file.
Currently the user imports the tab delimited file into a new Workbook, selects all and copies. Then goes to the template and pastes the data into sheet1.
This is a large amount of data, 269 columns and over 135,000 rows. It’s a cumbersome process and the users are not experienced Excel users. All they really want is the pretty graphs.
I would like to add a step after the program that generates the data to programmatically automate the process the user currently must do manually.
Can anyone suggest the best method/programming language that could accomplish this?
POI is the answer. Look at the Apache website. You can use java to read the data and place it in cells. The examples are very easy.
You can can solve this, for example, by a simple VBA macro. Just use the macro recorder to record the steps the user does manually now, this will give you something to start with (you probably will have to add a function to let the user choose the import file).
You said you have some data generated by another program. What kind of program? A program that you have developed by yourself and where you can add the excel-import functionality? Or a third party program with a GUI that cannot be automated easily?
And if you really want to create an external program for this task - choose whatever programming lanuguage you like as long as it can use COM objects. In .NET, you have the option of using VSTO, but I would only suggest that for this task if you have already some experience with that (but than you would not ask this kind of question, I think :-))
Look here:
Create Excel (.XLS and .XLSX) file from C#
There's NPOI (.NET Framework version of POI) so that you can code in C# if you want.
If you use two workbooks - one for data and one for graphs - and don't update links automatically you can use a macro to get the data (maybe an ODBC connection if the file is in a format it can read - long shot) and then link the charts to the data workbook.
Use a macro to update the links and generate the charts and then send them out and hope no one updates the links.