Given is the following scenario: A .net-class-library with business logic and Excel 2010 Add-In (VSTO) to make it available for users. All is working fine. Now, we need to call some of the logic from VBA. Just something like addLog("no issue") or getString("for ID").
(I know, standard solution is: creating a COM-visible dll and reference it within the VBA-project. However this wouldn't work in the current environment because of missing admin-credentials.)
Now, I am searching a way to make this happen. What I found is:
DDE - but everyone is screaming that it is really outdated
WCF-Service hosted within the VSTO Add-In - but I couldn't find any example that fits vaguely
So, do you have any suggestion?
Thanks a lot in advance
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I need your help in deciding the best strategy and technology to choose from for the continuing development of a successful in-house VBA application.
In our company (a web-based distributor of financial information), over the years, we have developed a VBA XLA Add-in application for use only inside our company, which helps in the linking of our database of financial information with Excel worksheets, through the use of several UDF's, supported by ADO/SQL and other business objects logic. This app became a solid, fast, and useful tool for us, somewhat similar to old DDE links, but much more sophisticated and flexible than that.
Recently we replaced the ADO/SQL portion of the system with a SOAP based Web-Service and XMLHTTP MSXML 6.0 technology, literally putting our database into the cloud. The goal was to transform the application into a product which could be used outside of our company. That work is already done, and its behaving quite well, with all functionality, load at startup, user authentication and session control login/logout, seamless integration with EXCEL, user-friendly messages, all done in a single 2.036Kb XLA Add-In file, spanning more than 15.000 lines of good VBA code. However, we feel that it cannot yet be distributed like it is...
We feel that in order to be successfully published as a product to our clients, this application must be transformed into compiled code instead of the interpreted VBA. There are many reasons to justify doing that, including security, speed, robustness, etc.. but we don't need to go into these details right now.
Our fist thought was to use VB6 and Automation Designers to quickly transform our VBA code into a VB6 Automation Add-in. Apart from the fact that VB6 is old technology, it seems that Automation Add-in's are not the ideal solution, for our app requires some interaction with Excel events and the End-User, at least during the "login" and "logout" into the web-service based database (and some other functionality that requires user interaction through forms), BUT is seems that Automation Add-ins are not suitable to anything other than UDF's only. Here we would like to learn about other's experiences with Automation Add-ins and end-user interaction.
So, COM Add-in's are the next option. Again, these allow interaction through menu buttons and commands, but do not allow UDF's in the worksheets. Or so we've read. Also, we have read that COM Add-ins can be made as Automation Add-ins (allowing UDF's after all), but that they will work as two separate entities inside the Excel environment (one COM and one Add-In), one half not communicating with the other. That's not acceptable to us. Again, we'd like to learn more about other's experiences in that regard.
Then there is Managed Code (.NET, Interop, and VSTO) as other viable options. However, while simple to get started with, it is not clear that Interop came to stay, and it is not clear what is the best strategy with managed code. Again, we'd like to learn about other's experiences in this realm.
So, the questions final is: given our requirements (i.e., load at startup, access to data through SOAP based web-service (MSXML 6.0), UDF's functions, login/logout session control, user-friendly error handling, etc.), and the fact that we already have 15.000 lines of good VBA code, which is the best technology for us to continue to develop this Excel component, in order to make it into an easily and safely distributable product? All comments and thoughts in that regard are very welcome.
I would take a look at Excel DNA: https://github.com/Excel-DNA
I had a very similar problem developing a VBA add-in that communicates with an ASP.Net Web API. Couldn't really give all the code out in VBA, so we needed a way of giving out compiled code. Connecting to the web service was freezing up excel making it harder for users working with massive spreadsheets with multiple API calls.
You can develop them in visual studios easily using VB so a lot of the code could just be copied and pasted over then changed slightly to fit the later version of VB you're using.
Add-ins compile to .xll 64-bit and 32-bit versions.
We handle all login and connection to the API in the Ribbon: https://exceldna.codeplex.com/wikipage?title=Ribbon%20Customization&referringTitle=Documentation
And you can use newer VB forms which are more user-friendly.
Connect to other .dll files for sharing logic across multiple add-ins.
The UDF we use which call the API can all run asynchronously freeing up Excels main thread.
https://exceldna.codeplex.com/wikipage?title=Asynchronous%20Functions&referringTitle=Documentation
It can run any VBA specific or CAPI code by queuing as a macro.
Pretty much do everything that you could do in VBA plus more.
Govert the Developer https://stackoverflow.com/users/44264/govert is very active on StackOverflow and forums. He's helped us out loads in the development. And Excel DNA is still being updated and worked on.
Let me know if you want some more details.
great summary of your project.
I'm also curious what other thinks about the "right" solution for such task. It won't be an easy decision though.
My short answer will be "stick with VBA" unless you are really concerned about stealing your code from the great VBA add-in.
The reason I'd go for VBA is that the longer I've been working with VSTO/COM the better I've found VBA to be the best for handling tasks that are closely related to Excel (understand MS Office) object model. I'm saying that even I have written almost zero lines of VBA code in last 4 years. I do understand that you are using webservices and other dependencies but I'd say that if you have good progress and the add-in is working as expected I'd NOT throw myself to a completely new world of development (VSTO & C#) just to be cool, you will gain not too much value of this, especially if you know that
deploying managed code is harder that just copy your add-in to a
folder, set registry, done
troubleshooting is a way harder with managed code, basically you will have to log much more and trying to reproduce issues that may not happen in your environment but happens in clients
re-engineering of managed code is not such hard so if people really wants to steal your code they can do that unless you use obfuscation
and the last and probably the most important for you as much as I'm aware there is no easy way to do UDFs in VSTO
I have very minimal experience with VB6/ COM Automation so I'd love to hear opinion of guys who have done something similar before
Re: the VSTO & UDF, at my job, we have a VSTO add-in that somehow handles UDFs for a large project. I'm not the main developer of the application but I believe we use Excel DNA there so do check it to explore the managed code option further
Hope that helps
My question might sound stupid but please bear with me :-)
I have an excel file, was doing some manual task, converted them to VBA code in order to automate. Works well.
I then decided why not distribute this. So, I went about searching for ways to protect the VBA code and found none. The most probable way was to convert it to DLL and call the DLL using "Tools-> add references->mytoolsDLL" inside excel. As the DLL code is not seen it does offer some protection. So, I looked up how to convert my VBA to DLL. Solution found "Visual Studio-> Class Library Project"! SO converted almost all VBA to DLL using Class Library Project, compiled, registered my DLL, used it inside Excel, all good, works well.
Now, this DLL I have compiled I dont know if it is classified as "COM add-in" or ".NET" DLL! Today I realised that it was very easy to "de-compile" a .NET DLL. I tried looking at "code" difference between a COM ADDIN and .NET there is almost none. When coding this "DLL", I was using google and MSDN a lot but they all referenced it as "VB"
If I am converting VBA to something, should it be "COM ADD-IN" or ".NET"? I read about VSTO today and was wondering how does VSTO come inbetween Visual Studio and COM ADDIN/.NET? What techniques can I use to ensure that the DLL when distributed can be license controlled? i.e. after first "install" the DLL cannot be copied to other machines? Is it possible to do license management/control via VSTO?
p.s: If you think I am mixing up terms/terminologies please feel free to correct me
Why not just right click your project once you are in the developer environment, select VBAProject Properties, select Protection Tab and set a password to protect your vba project ?
I have created a working Powerpoint add-in (.ppam) that offers several time saving features, and added a custom UI ribbon tab to improve accessibility.
As I look to distribute this add-in to users, I'm looking to improve code security by compiling it into a COM add-in (.dll) via VS Express.
I have looked all over the web for documentation on this, and have found some promising source, such as:
http://www.cpearson.com/excel/creatingcomaddin.aspx
Unfortunately, nearly everything I find appear to be quite outdated and based on Office XP or 2003, when I'm looking at Office 2010. I'm probably doing something wrong here, but I'm having trouble replicating their instructions on my end, running into errors like being unable to add a reference library or the code they suggest is not recognized. I actually am even unsure how to open for example the sample VB project that the Pearson site provides from the link above to imitate. I think all this may be because of the different versions of Office and Visual Studio, but could certainly be wrong.
Could anyone point me in the right direction? My understanding is that it's actually quite simple to convert the code from VBA to VB (just involves adding "Powerpoint.Application." in front of things like "activewindow"). So I just need to figure out how to convert a very simple VBA add-in into a COM add-in in VS Exp 2012 for Office 2010, and then can leverage the process to convert the full add-in.
Apologies if I'm using any of the terms incorrectly.
I would like to access a WCF service through VBA functions/macros in Excel (2007 or 2010).
It seems there are a number of possibilities, each with its own particular shortcomings. ...
Microsoft SOAP Toolkit
WCF Service Moniker
COM Interop
VSTO
Excel-DNA
Can anyone advise on the best way of doing this?
I don't think there is a clear-cut answer to your question; it depends a bit on what you want to do with the data returned from the service, how you intend to deploy your solution, and how much is done with VBA, as opposed to .NET.
My gut feeling is that VSTO is probably right, because it gives you a full-fledged .NET project, which will likely be the most convenient to handle the WCF services. Assuming that what you are trying to do is retrieve data and give your user choices as to what to pull and how to display it, you can then build a user interface for it (maybe in a task pane), and write the results to Excel, while writing code in Visual Studio.
However, you mentioned VBA, and I am not quite sure how much you want to use it. I found ExcelDNA to be easier to use if what you want to do is create a VBA user-defined function which calls a .NET dll. If VBA is what you want to focus on, this may be the way to go.
Hope this helps!
I need interop in my programs to automate several functions in Word and Outlook. Does anyone know a good place to start. My goal is to kick off a mail merge, create several different files and save them accordingly, then e-mail the different files to different people based upon who needs what. Any help learning how to use the interop properly would be greatly appreciated.
I am currently using Visual Studio 2008 and Office 2007 and use vb.net to write my programs.
A good way to get started is to use the macro editor to record the steps you are trying to perform. You can take the generated macro code and modify it for your purposes to suit. Click on the names of functions and variables of which you do not know the purpose and hit "F1" to get context specific help.
Add COM references to Outlook 12.0 Object library and Word 12.0 Object library.
This web page really helped kick me off: http://support.microsoft.com/kb/316383
Then, by recording macros you'll expose a lot of the stuff you'll likely want to work with. Word of warning, however, is that not everything exposed in VBA (macros) is accessible within VB .NET. I don't know why this is, but I've actually had to construct and execute a macro from VB.NET, written in VBA, within Excel to accomplish something that seemed ridiculously easy if it weren't for the strange disconnect between the two.
Some good info on Mail Merge: http://support.microsoft.com/kb/258512
Here's an article with some basic steps to get you up and connected with Outlook's Interop: http://support.microsoft.com/kb/313787
Hope this helps. I'll keep an eye out for questions from you here--I'd say I know quite a bit when it comes to interop.
You might want to start here: http://msdn.microsoft.com/en-us/office/bb266408.aspx.
There are a number of tutorials.