Question

For some reason my .NET (C#) SqlConnection uses my Windows session credentials instead of the specified ones. Is there a way to ignore my session credentials and use the ones I specified?

SqlConnection myConnection = new SqlConnection("user id=user;" +
                                   "password=pass;server=10.0.10.99;" +
                                   "Trusted_Connection=yes;" +
                                   "database=databasename; " +
                                   "connection timeout=5");
myConnection.Open();

Answer 1

Remove Trusted_Connection=yes; which indicates that integrated security is used and which leads to your Windows credentials getting used.

For a quick reference on connection strings attributes you can take a look at:

The Connection String Reference