请教一下sql 2005 express 与企业版的数据库连接串区别

Question

express版的数据库文件能不能直接附加到企业版里，他们的程序操作是不是通用的。我看到一个express版的数据库连接操作与我通常使用的不一样。
public class DbConnectionStore
    {
        public static DbConnectionStore TheInstance = new DbConnectionStore();
        public static readonly string DBNAME = System.Web.Configuration.WebConfigurationManager.AppSettings["DBName"];        private DbConnectionStore()
        {
        }        public DbConnection GetConnection()
        {
            ConnectionStringSettings cnSettings = DbConnectionStore.TheInstance.GetConnectionStringSettings();
            DbProviderFactory providerFactory = DbProviderFactories.GetFactory(cnSettings.ProviderName);
            DbConnection cn = providerFactory.CreateConnection();
            cn.ConnectionString = cnSettings.ConnectionString;
            try
            {
                cn.Open();
                return cn;
            }
            catch (Exception ex)
            {
                throw new Exception("无法连接到服务器", ex);
            }
        }        public ConnectionStringSettings GetConnectionStringSettings()
        {
            ConnectionStringsSection connectionStringsSection = WebConfigurationManager.GetSection("connectionStrings") as ConnectionStringsSection;
            ConnectionStringSettingsCollection connectionStrings = connectionStringsSection.ConnectionStrings;
            ConnectionStringSettings connStringSettings = connectionStrings[DBNAME];
            return connStringSettings;
        }
    }这里面怎么没有用到sqlconnection?

Answer 1

他的sqlconnection已经在web.config里面写了