有如下的列程序段，public interface IDataBase { void OpenTable(string tableName); void UpDataTable(string tableName); } public class DataBase : IDataBase { public void OpenTable() { Console.WriteLine("打开数据表"); } public void UpDataTable() { Console.WriteLine("DataBase修改数据表" ); } }public class CDataBase : DataBase { new public void UpDataTable() { Console.WriteLine("CDataBase更新数据表" ); } }class Program { static void Main(string[] args) { IDataBase db = new CDataBase(); _________________ _________________ } }程序运行结果为：DataBase修改数据表CDataBase更新数据表，请将程序填充完整