C#构造函数与初始化列表

// Namespace Declaration
using System;

// helper class
class OutputClass
{
    string myString;

    // Constructor
    public OutputClass(string inputString)
    {
        myString = inputString;
    }

    //this指向特定对象，它产生了对自己带参构造函数的调用
    public OutputClass() : this("default string")
    {
    }

    // Instance Method
    public void printString()
    {
        Console.WriteLine("{0}", myString);
    }

    // Destructor
    ~OutputClass()
    {
        // Some resource cleanup routines
    }
}

// Program start class
class ExampleClass
{
    // Main begins program execution.
    public static void Main()
    {
        // Instance of OutputClass
        OutputClass outCl = new OutputClass();
        
        OutputClass outC2 = new OutputClass("This is printed by the output class.");

        // Call Output class' method
        outCl.printString();

        outC2.printString();
    }
}