关于静态变量,静态构造函数,实例变量,构造函数的执行.
请看下面的代码,其实输入结果如下:
第一个输出和第二个输出都比较理解,第三个输出是为何(为什么所有静态变量和静态构造函数都没有执行)?
大家来讨论一下!
static void Main(string[] args)
{
Console.WriteLine("BaseA basea = new BaseA();");
BaseA basea = new BaseA();
basea.MyFun();
Console.WriteLine();
Console.WriteLine("BaseB baseb = new BaseB();");
BaseB baseb = new BaseB();
baseb.MyFun();
Console.WriteLine();
Console.WriteLine("BaseA basec = new BaseB();");
BaseA basec = new BaseB();
basec.MyFun();
Console.WriteLine();
}
public class BaseA
{
public static MyTest a1 = new MyTest("基类静态变量");
public MyTest a2 = new MyTest("基类实例变量");
static BaseA()
{
MyTest a3 = new MyTest("基类静态构造函数");
}
public BaseA()
{
MyTest a4 = new MyTest("基类实例构造函数");
}
public virtual void MyFun()
{
MyTest a5 = new MyTest("基类实例函数MyFun");
}
}
public class BaseB : BaseA
{
public static MyTest b1 = new MyTest("派生静态变量");
public MyTest b2 = new MyTest("派生实例变量");
static BaseB()
{
MyTest b3 = new MyTest("派生静态构造函数");
}
public BaseB()
{
MyTest b4 = new MyTest("派生实例构造函数");
}
public new void MyFun()
{
MyTest b5 = new MyTest("派生实例函数MyFun");
}
}
public class MyTest
{
public MyTest(string info)
{
Console.WriteLine(info);
}
}
作者 taoliuhua
补充：Web开发 , ASP.Net ,
