dll problem

[ckjason]

I create a dll that connect to database to query some table and return some value (integer), i have test run the code in windows form and no problem found. But i compile it and import the dll to my project, it come out error message. The error message very general. Is dll unable to connect sql database?

 

[jmcilhinney]

Is dll unable to connect sql database?

How would we know? We don;t even know what this general error message is, never mind anything else. You're going to have to provide some information if you expect us to be able to diagnose the problem.