O'Reilly - .NET Framework Essentials, 2nd Edition--第三章

3.1 common programming model

3.1.1 System.Object
Every type in .NET is an object, meaning that it must derive directly or indirectly form the Object class. The Object class exposes the public methods listed in table 3-1, which you can invoke on any given .NET object at runtime.

Methods	Description
Equals()	比较两个类，确定它们是否一致
ReferenceEquals()	比较两个类，确定它们是否引用了相同的类
GetHashCode()	获取对象的哈希代码
GetType()	获取对象的类型
ToString()	将对象转换为字符

3.1.2 Major Namespaces

Namespace	Description
System	See detail at MSDN
System. IO
System.Collections
System.Threading
System.Reflection
System.Security
System.Net
System.Data
System.Web.Services
System.Web.UI
System..Windows.Forms

3.2 Core Features and Languages
 Namespace
 Interface
 Encapsulation
 Inheritance
 Polymorphism?
 Exception handling

3.2.1 Managed C++ Code
(……)


3.2.2 VB Code

3.2.3 C# Code

using System
namespace  lang       //define a namespace
{
interface ISteering      //define interface
{
void TurnLeft()
void TurnRight()
}

abstract class vehicle : Isteering       //define abstract class to implement interface.
{
   public void TurnLeft()

{
Console.WriteLine(“Left”);
}

public void TurnRight()
{
Console.WriteLine(“Right”);
}
public abstract void ApplyBrakes();
} 

class Car:Vehicle                //inherits a base class
{
 public override void ApplyBrakes()   //override a methods

{
 Conslose.WriteLine(“Stop”);
 Throw new Exception(“stop false”);
}
}
}

 

3.2.4 Common Intermediate Language Code
(…….)

3.3 Language Integration