【转载】#330 - Derived Classes Do Not Inherit Constructors

A derived class inherits all of the members of a base class except for its constructors.

You must define a constructor in a derived class unless the base class has defined a default (parameterless) constructor.  If you don’t define a constructor in the derived class, the default constructor in the base class is called implicitly.

When you define a constructor in a derived class, you can call a constructor in the base class by using the base keyword.

Here’s an example:

 public class Dog
 {
     public string Name { get; set; }
     public int Age { get; set; }

     public Dog(string name, int age)
     {
         Name = name;
         Age = age;
     }
 }

 public class Terrier : Dog
 {
     public string Attitude { get; set; }

     // Call the Name/Age constructor in the base class
     public Terrier(string name, int age, string attitude)
         : base(name, age)
     {
         Attitude = attitude;
     }
 }

原文地址：#330 - Derived Classes Do Not Inherit Constructors