Based learning: understanding of this in a derived class constructor

https://www.cnblogs.com/Bear-Study-Hard/archive/2006/01/09/313551.html

Read the above article felt, do a little special model, in order to deepen this understanding in a derived class

. 1  the using the System;
 2  the using the System.Collections.Generic;
 . 3  the using the System.Linq;
 . 4  the using the System.Text;
 . 5  the using System.Threading.Tasks;
 . 6  
. 7  namespace ConsoleApp77
 . 8  {
 . 9      public  class MyBaseClass
 10      {
 . 11          public MyBaseClass ()
 12 is          {
 13 is              Console.WriteLine ( " I is a base class, no argument constructor! " );
 14          }
 15  
16          publicMyBaseClass ( int I)
 . 17          {
 18 is              Console.WriteLine ( " I is the base class, there are parameters, parameter 0} { " , I);
 . 19          }
 20 is      }
 21 is  
22 is      public  class MyDerivedClass: MyBaseClass
 23 is      {
 24          public MyDerivedClass (): the this ( . 5 , . 6 )
 25          {
 26 is              Console.WriteLine ( " I am a derived class, no argument constructor! " );
 27          }
 28  
29          publicMyDerivedClass ( int I)
 30          {
 31 is              Console.WriteLine ( " I derived class has a constructor parameter, the parameter: {0} " , I);
 32          }
 33 is  
34 is          public MyDerivedClass ( int I, int J)
 35          {
 36              Console .WriteLine ( " I derived class has a constructor parameter, the parameter: {0}, {}. 1 " , I, J);
 37 [          }
 38 is      }
 39  
40      class Program
 41 is      {
 42 is          static  void the Main (string[] args)
43         {
44             MyDerivedClass myder = new MyDerivedClass();
45         }
46     }
47 }

View Code

This code performs the following sequence:
    1. Performing System.Object.Object () constructor.
    2. Performing MyBaseClass.MyBaseClass () constructor.
    3. Performing MyDerivedClass.MyDerivedClass (int i, int j) constructor.
    4. Performing MyDerivedClass.MyDerivedClass () constructor.