C#调用基类构造函数

public class BaseClass
{
    public BaseClass()
    {
        Console.WriteLine("Base class constructor called.");
    }
}

public class DerivedClass : BaseClass
{
    public DerivedClass() : base()
    {
        Console.WriteLine("Derived class constructor called.");
    }
}

DerivedClass derived = new DerivedClass();

Base class constructor called.
Derived class constructor called.