Check the connection string into Desktop App in case of fist install to setup the Database

Check the connection string into Desktop App in case of fist install to setup the Database

static void Main()
        {
            Application.EnableVisualStyles(); 
            Application.SetCompatibleTextRenderingDefault(false);
            var connectionstring = ConfigurationManager.AppSettings["connectb02C_coreDB"].ToString().Trim();
            b02C_core.DataAccess.DataAccess obj = new DataAccess.DataAccess();
            if (string.IsNullOrWhiteSpace(connectionstring) && connectionstring == "")
            {
                
                Application.Run(new SqlSetUpForm());
            }
            else
            {
                Application.Run(new LoginForm());
            }
        }