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Is there any way to determine if and where previous versions of an application have been installed?

Save the ENCRYPTED information in the registry. Use a PRIVATE function to encrypt or decrypt a string. Each time the user log on, check to see if variables is still the same (for example processor id). Finally I would recommend that you use dotfuscator to obscure your code (.Net programs can...

OK, problem solved. Apparently it's just VB's way of telling me that the parameter's must be passed in the same order that it was specified in during the SP's creation.

Nope. I tried passing the oledb data type through the oledbparameter constructor, but unfortunately this did not do the trick. I still get the same error message. I think Microsoft should hire me to do product testing. If there's a bug, I WILL stumble accross it.

OK, thanks. I'll try that and post again if that doesn't solve the problem. Regarding Access: That is not the only possible bug I know of. When I copy a database (that contains stored procedures) from one computer to another, the stored procedures does not show (under queries) of the...

Thanks, but this same error popped up on several more places. Now I am not sure anymore whether it is the "empty strings" causing this problem. I have been pulling my hair out about this because it has really been slowing down my progress. Another problem: when setting the input and display...

OK, here follows the statement that creates the stored procedure. The stored procedure creates successfully and displays under queries: Here follows the procedure that passes the parameters through as an arraylist to the next procedure that executes the stored procedure: And here is the...

Hi everyone. I get the error: "Data type mismatch in criteria expression", whenever I try to insert a record that contains an empty string value in one of it's fields. I'm using MS Access as the database, and I know the error is due to the fact that Access is very stronly typed. Is there a...

Hi everyone. I need to use arraylists as datasources for a few crysal reports. (These arraylists will be populated during run-time). I can not connect the crystal reports directly to the database or a dataset for that matter, because I am using multi-tier development. In other words, I have...

Nevermind, just one frikkin line (out of a few thousand) that I forgot. But I guess that's what happens when you work for 2.5 days without any sleep.

Nevermind, seems that a datagrid cannot bind properly to an arraylist that contains an object-hierarchy. Turns out I had to create viewer-classes and bind to them

Does anyone know of a way to get the next "autonumber" ( or the last one that was created) in MSAccess using VB.Net? It would really save me a few hundred lines of programming. Thanx in advance.

I have a button which executes the following (pseudo) code when clicked: dim tmp as new employee tmp.Name = txtName.text tmp.Surname = txtSurname.text Arraylist1.add(tmp) ... 'do something that calls each element of Arraylist1 Now, the code executes perfectly the first time. The second time I...

You should look at Microsoft's 101 Code Samples, which also contains a example of how to create a program that can send e-mails. Look at www.msdn.com, under most popular developer downloads.

Yeah, sorry mate. I also need some fingerprint reader SDK's and I have been searching my butt of. Unfortunately, it seems that no-one were enthusiastic enough to create opensource/freeware fingerprint modules/SDK's or whatever. (BTW, my device did not provide any SDK's or dll's or COM's)...

While we are on the topic of weird functions... is there a way by which functions can be called through parameters? I know that when you start a new thread you need to pass a function as a constructor parameter. My question is: How do I do this with my own sub's or functions. (How do I create...

Hi guys. When binding a datagrid to an arraylist I receive a message that says: system.argumenterror - cannot create a child list for "EMPLOYEE". Usually i just say: datagrid.dataource = arraylistname datagrid.datamember = nameOfAListElementsType I've tried the setdatabinding equivalent but...

Maybe you should try providing more info...

Firstly, do anyone know of good tutorials/source code for programming a fingerprint scanner in vb.net? I'm also looking for advice/tutorials/source code on generating e-mails. Lastly, is it possible to convert crystal reports and word documents to pdf? If yes, then how? Again, source code or...

Well, for a newbie the easiest way would be to "cheat". Take a panel, slap a few buttons on, fiddle a little with the buttons' and panel's attributes... If your looking for something fancy you should firstly familiarize yourself with OO programming and control creation in VS.Net.