Enterprise Library问题2

最近把webcast看了看，但是感觉讲的比较简单，都是些入门的东西，我的问题还是没有解决。比如我做一个windows的项目，数据库用Enterprise Library Configuration工具配置，但是自定义的配置文件在Enterprise Library Configuration中只有地址，具体的项目还得到程序中配置，在程序中怎么配置数据库信息呢，怎么做一个统一的界面配置所有的信息呢，Enterprise Library的源码看了看，实在是太复杂了，看不太懂。

        操作Config文件#region 操作Config文件

        private void GetConnectionString()
        {
            Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
            ConfigurationSection section = config.ConnectionStrings;

            for (int i = 0; i < config.ConnectionStrings.ConnectionStrings.Count; i++)
            {
                string connectionName = config.ConnectionStrings.ConnectionStrings[i].Name;

                if (connectionName == "milnets")
                {
                    string connectionString = config.ConnectionStrings.ConnectionStrings[i].ConnectionString;

                    SqlConnectionStringBuilder builder = new SqlConnectionStringBuilder(connectionString);

                    RegExTextBox_Server.Text = builder.DataSource;
                    RegExTextBox_uid.Text = builder.UserID;
                    RegExTextBox_pwd.Text = builder.Password;
                    RegExTextBox_Database.Text = builder.InitialCatalog;

                    break;
                }
            }

            RegExTextBox_LibCode.Text = ConfigurationManager.AppSettings["LibCode"];
        }

        private void SaveConnectionString(string connectionString, string libcode)
        {
            Configuration config = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
            ConfigurationSection section = config.ConnectionStrings;

            for (int i = 0; i < config.ConnectionStrings.ConnectionStrings.Count; i++)
            {
                if (config.ConnectionStrings.ConnectionStrings[i].Name == "milnets")
                {
                    config.ConnectionStrings.ConnectionStrings[i].ConnectionString = connectionString;
                }
            }

            config.AppSettings.Settings.Clear();
            config.AppSettings.Settings.Add("LibCode", libcode);

            config.Save(ConfigurationSaveMode.Full);

            ConfigurationManager.RefreshSection("dataConfiguration");
            ConfigurationManager.RefreshSection("connectionStrings");
            ConfigurationManager.RefreshSection("appSettings");
        }

        #endregion