static_cast(*this) to a base class create a temporary copy. class Window { // base class public: virtual void onResize() { ... } // base onResize impl ... }; class SpecialWindow: public Window { // derived class public: virtual void onResize() { // d
原文(http://tech.it168.com/d/2008-06-30/200806300953554_all.shtml) TypeConverter对于编写ASP.NET Server Control的朋友可谓是再熟悉不过了.我们通过示例,一步一步地来查看如何在Atlas中使用自定义TypeConverter. 首先,定义一个复杂类型Employee: [TypeConverter(typeof(EmployeeConverter))] public class Employee { p
方法定义: private static T GetValueByKey<T>(string key) where T : IConvertible { T localVal=default(T); string strType = typeof(T).Name; string valuesData = ConfigurationManager.AppSettings[key].ToString(); localVal = (T)Convert.ChangeType(valuesData, t