C#访问修饰符

using System;
namespace MySpecifIErs
{
   class Demo
   {
      protected string name = "Website";
      protected voID display(string str)
      {
         Console.Writeline("Tabs: " + str);
      }
   }
   class Test : Demo
   {
      static voID Main(string[] args)
      {
         Test t = new test();
         Console.Writeline("Details: " + t.name);
         t.display("Product");
         t.display("Services");
         t.display("Tools");
         t.display("Plugins");
      }
   }
}