Ive used drools before; its easy to understand and implement.

1.in the same class, you can not directly create objects 2.in other classes, you must create an object to call by value for objects 3.the class can be defined as static ,or you can directly call the class' name April Comm100 - Leading Live Chat Software Provider

mesho wrote: i don't think that the problem is with encrypted data That is what the Padding Exception seems to be saying! You may need to look at the encryption side to see how the data looks at the end and then make certain that you reconstruct it in the same way during the decryption phase. Obviously if your key is wrong this may also affect the result.

Hi, if the release build also works well, then you can claim you solved the problem. if not, you just closed your eyes. switching to debug mode does not solve anything that turning off the computer would not solve. if you need some advice on fixing release problems, read Debugging Release Mode Problems[^] and this[^]. :) Luc Pattyn [Forum Guidelines] [My Articles] The quality and detail of your question reflects on the effectiveness of the help you are likely to get. Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Fromi what I've seen, this should work. The only problem I can see is that you are specifying the connection string twice, built by two seperate methods. This is one method: mesho wrote: Dim sCreateString As String sCreateString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & DatabaseFullPath cat.Create(sCreateString) which takes a database file path as a parameter. The other speicifies a very specific filepath, which could be very different from the above path: mesho wrote: 'Open the connection cn.Open("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=G:\testdb.mdb") 'Open the Catalog cat.ActiveConnection = cn This is probably where you're probliem lies. You're looking in one file for the table, but the table was created in another file. A guide to posting questions on CodeProject[^] Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic      2006, 2007

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thank you killerp very much :)