VC.Net、C#.Net语法上很难想到的几点不同处

1:调用基类构造函数：
C#

public subclassname(object arg): base(arg){}

C++
h文件

public:subclassname(System::Object^ type)；

cpp文件

subclassname(System::Object^ type): baseclassname(type){}

2:重写基类方法：
C#

protected override string baseclassMethod(object value){}

C++
h文件

virtual System::String^ baseclassMethod(System::Object^ value) override;

cpp文件

System::String^ namespace::subclassname::baseclassMethod(System::Object^ value){}

3:属性：
C#

public int Count{get{retrun m_Count;}set{m_Count=value;}}

C++
h文件

property virtual int Count{

    int get(){return this->m_Count;}    set(int value){this->m_Count=value;}}

4:数组
C#

ItemType[] items;

C++

array<ItemType>^ items;

5:泛型
C#

public someclass<T>{}

C++
h文件

generic <class ItemType>public ref class ItemCollection{}

6：生成类实例：
C#

someclass sc=new someclass();

C++

someclass^ sc=gcnew someclass();

7:获取类的类型
C#

typeof(someclass);

C++

someclass::typeid;

8:名称空间
C#

namespace A.B{}

C++

namespace A{namespace B{}}

9折叠代码：C##

#region sometext#endregion

C++

#pragma region sometext#pragma endregion sometext

10：索引
C#

public int this[int index]{get{return this.m_Index;}set{this.m_Index=value;}}

C++

virtual property int default[int]{int get(int index){return this->m_Index;}void set(int index, int value){this->m_Index=value;}}

11:同名不同返回类型的函数（继承接口）

//直接写就行了

C++

virtual someTypename^ somemethodname() = basetypename::somemethod{ return this->m_InnerList->GetEnumerator();}

12:IDispose接口

C#

someInstance.Dispose();

C++

delete someInstance;

someInstance->~SomeInstance()

13:事件注册

 C#

 someInstance.someEvent += new System.ComponentModel.Design.ComponentChangedEventHandler(this.eventProc);

C++

 service2->ComponentChanged += gcnew System::ComponentModel::Design::ComponentChangedEventHandler(this, &classname::eventProc);

14:泛型默认值

C#

T t=default(T);

C++

T t=T();