I have a solution in which I have built an Error Handling Project that consists of 1 class. I need to have every other Project including my main assembly be able to talk with this project...so, I declare a new instance of the Error Handling class in each Form and Project,
Private EH As New ErrorHandling.ErrorHandler
however, in doing some testing, and I will use my DataLayer (a separate Project) as the example, I've noticed that whenever an exception occurs, I populate the EH.strRetVal (strRetVal is a public variable declared within my ErrorHandler) with the exception message but I don't pass it back because in the DataLayer, I'm passing back either a DataSet or DataTable. So in this case the exception goes unnoticed.
What I'm thinking is that if I change the signature of the function to return Object instead of DataSet/DataTable, how do I check the return value to see if it's an error message or a DataSet/DataTable?