It's simple enough to set a design-time connection string with the Report Wizard. But I'm having a very difficult time trying to set a connection string that will work once the Winforms App is deployedl. I have tried using Path.GetDirectoryName Application.ExecutablePath etc. but nothing wants to work. I know there's some simple and probably elegant solution to this, but I'm stuck and must reach out for help. Any ideas on the best way to do this? I'm using a SQLDataSource and it's connection string finds everything I try disagreeable. Thanks in advance.