Windows form control and sql authentication

Question

I had an asp page accessing a database and wanted to do away with the asp and make it a Windows form user control. I moved my c# code into a control class and added it to my html page via the object keyword. Now I cannot access my database even though its the same code. Now that I don't have a webconfig file how do I authenticate users to access the database. Right now it does not even work for me on my 'localhost'. Any ideas? Thanks in advance. Pat