namespace Demo
{
  public class Test
  {
    private string scope = "全局變量";
    public string getResult()
    {
      string scope = "局部變量";
　　　　　　　// 在這里，this代表Test的實例，所以this.scope指向的是全局變量，scope所訪問的是局部變量
      return this.scope + "-" + scope;
    }
  }

  class Program
  {
    static void Main(string[] args)
    {
      try
      {
        Test test = new Test();
        Console.WriteLine(test.getResult());
      }
      catch (Exception ex)
      {
        Console.WriteLine(ex);
      }
      finally
      {
        Console.ReadLine();
      }

    }
  }

namespace Demo
{
  public class Test
  {
    public Test()
    {
      Console.WriteLine("無參構(gòu)造函數(shù)");
    }
    // 這里的this()指向的是Test()無參構(gòu)造函數(shù)
    // 相當于繼承了無參構(gòu)造函數(shù)
    public Test(string text) : this()
    {
      // 程序進來后會先執(zhí)行Test()無參函數(shù)，然后繼續(xù)往下邊執(zhí)行
      Console.WriteLine(text);
      Console.WriteLine("有參構(gòu)造函數(shù)");
    }
  }

  class Program
  {
    static void Main(string[] args)
    {
      try
      {
        Test test = new Test("張三");
      }
      catch (Exception ex)
      {
        Console.WriteLine(ex);
      }
      finally
      {
        Console.ReadLine();
      }
    }
  }
}