Library to parse Excel Formulas - language-agnostic

I'm looking to make an AddIn for excel that modifies formulas in cells. Looking at Microsoft's C# and VBA API, I don't even see a Formula object. All I can get is the string that is displayed. Is there a formula parser for excel so that I can mess with something like an AST graph? (I'm language agnostic)
Thanks.

There is not an accessible built-in parser with an API, but several people have written Excel formula parsers (although the Excel team keep moving the goalposts). See
Ewbi's c# and Rob Van Gelder's VBA

Related

Fetching specific data from consumerfinance.gov into excel using VBA programming

I want to fetch data from consumerfinance.gov and import it into an Excel spreadsheet. Any ideas on how to accomplish this?
Why don't you try out our OData API, which would allow you to consume those datasets directly within Excel without needing to write any VBA at all?
Edited: All right, since it sounds like OData isn't an option, how about a Web Query? You can us the CSV export (Export -> Download -> CSV) or the CSV format from SODA and I think that'd still work in 2007.

Working with Excel Files in AS3

I'm trying to save some data to an Excel file from Adobe AIR. I'm using the as3xls library hosted on Google Code, but it doesn't seem to SAVE formulas. For example, if I set the value of a cell to =SUM(B1:B38), it evaluates it as a string when I open the saved document. I was curious if any export here has any sort of knowledge on how to build in formulas into an Excel document. I'm not too saavy on the XLS or XLSX data format.
I am familiar with many other programming languages, so if someone knows of a really great library for doing this sort of thing, let me know!
I have been not try it, but Try it:
as3xls.swc

Save Google NGram result as .csv

Is there an easy way, to save a Google Ngram result
http://books.google.com/ngrams/
as a csv?
So that I get a list like
1900 peace 500000times
1901 peace 540000times
and so on?
I downloaded their raw data but have no idea how to handle it. When I open those csv in OpenOffice, I can't even see a single word.
It can be done, and it's actually quite easy. Generate the graph you want on the Google Ngram viewer, then use your browser's function to show the page source code (this might be hidden under advanced or developer options). Then in the code (probably on line 297), you will find the data simply listed. You can use any word processor and/or spreadsheet software to clean up the data and export them as CSV.
No, you'd have to go to their datasets, which would be daunting to find what you wanted, or you could try Microsoft Research's N-Gram service.

SSIS Excel Destination with format

I try to export excel file with some format like:
Interior.Color
HorizontalAlignment
Font.Bold
and etc..
So the question is, can we do like that is SSIS..
and how to do it?
Not natively no.
If you always have the same output format you could create a formatted template spreadsheet, then make a copy of that to fill with data. I have seen this done before, the formulas and formatting were in the template, the SSIS job copied the template, then populated the copy.
SSIS is primarily a tool for moving data. Although it may be possible to write a script task or a custom component to do what you want, a better way would be to use a tool that is designed for presentation of data (a reporting tool, for example: SSRS) to do what you are trying to do.

Convert excel spreadsheet into html using vb.net?

I would like to see some code/tutorials on reading an excel spreadsheet (a calender) into VB.NET. I'm pretty much okay from there. I want to convert it to an HTML table and output it into an html file for inclusion on a website.
Where can I find tutorials OR can someone post some code with a desciption to get me startd?
BONUS:
Is there a better way to include a xls file in a webpage?
There is an excel reader available on Codeproject here. The article covers the Excel file format layout, and the related material from Sun, in respect to how OpenOffice reads in the Excel spreadsheet.
AFAIK, there is no way to include an xls in a webpage unless you are talking about showing the actual data, it may be possible under IE only, to trigger the end user's Excel application, but IMHO that would be a dangerous assumption as that assumes the user has MS-Office installed.
Hope this helps,
Best regards,
Tom.