一、问题：关于类的访问级别和成员的访问级别
    学习访问级别这个章节时，感觉就是访问修饰符，没有引起重视。学完章节后，开始做练习才发现，关于这两级的访问级别，我自己是一塌糊涂，用了整整一个下午近3个小时，还是没有解决。真可谓是：焦头烂额。
二、在此：焦急求助，希望高手大侠不吝赐教，帮忙解决这个问题。
    我把自己的困惑集中于下面这个表格中，请高手大侠拨冗解答。小虾在此先谢谢了！
-------------------------------------------------------------------------------------------------------
类的访问级别  |    成员的访问级别    | 类可以提供什么类访问？ |  类中的成员可以提供什么类及对象的访问？|
--------------|----------------------|------------------------|----------------------------------------|
 public       |    public            |                        |                                        |
              |----------------------|------------------------|----------------------------------------|
              |   internal           |                        |                                        |
              |----------------------|------------------------|----------------------------------------|
              |   private            |                        |                                        |
              |----------------------|------------------------|----------------------------------------|
              |  protected           |                        |                                        |
--------------|----------------------|------------------------|----------------------------------------|
 internal     |   public             |                        |                                        |
              |----------------------|------------------------|----------------------------------------|   
              |  internal            |                        |                                        |
              |----------------------|------------------------|----------------------------------------|   
              |  private             |                        |                                        |
              |----------------------|------------------------|----------------------------------------|   
              |  protected           |                        |                                        |
--------------|----------------------|------------------------|----------------------------------------|   
 private      |  public              |                        |                                        |
              |----------------------|------------------------|----------------------------------------|
              |  internal            |                        |                                        |
              |----------------------|------------------------|----------------------------------------|   
              |  private             |                        |                                        |
              |----------------------|------------------------|----------------------------------------|
              |  protected           |                        |                                        |
--------------|----------------------|------------------------|----------------------------------------|
 protected    |  public              |                        |                                        |
              |----------------------|------------------------|----------------------------------------|   
              |  internal            |                        |                                        |
              |----------------------|------------------------|----------------------------------------|        
              |  private             |                        |                                        |
              |----------------------|------------------------|----------------------------------------|   
              |  protected           |                        |                                        |
--------------|----------------------|------------------------|----------------------------------------|

急！搞不明白，很急！百度了，翻书了，得到的只是零碎的，希望大侠不吝赐教。我都头晕脑胀了！！

[ 本帖最后由 lxsxd 于 2014-8-17 21:24 编辑 ]

感谢信
---------
感谢  邓士林  ！！你的帮助让我对访问级别的理解大大进了一步！！在此，小虾谢谢您！结贴分全部给您！

我的理解：写在这段代码中。
namespace Main方法
{
    public class A
    {
        public int X;
        internal int Y;
        protected int Z;
        private int H;
        public void Ahello()
        {
            A hel = new A();
            hel.X = 1;
            hel.Y = 2;
            hel.Z = 3;
            hel.H = 4;  //访问自己类内的成员，不管什么访问修饰符，均可访问；

        }
    }
    internal class B
    {
        public int X;
        internal int Y;
        protected int Z;
        private int H;
    }

    class C : A  //继承类A
    {
        public int M;
        internal int N;
        protected int L;
        public void Chello()
        {
            C hel = new C();
            hel.M = 1;
            hel.N = 2;
            hel.L = 3;  //访问自己类的任何成员；不管什么访问修饰符；
            hel.X = 4;
            hel.Y = 5;
            hel.Z = 6;  //因为继承A类，所以可以访问A类中的public\internal\protected;但不能访问A类中的private；
        }
    }
 
    class Program
    {
        static void Main(string[] args)
        {
            A pic = new A();
            pic.X = 1;
            pic.Y = 1;  //其他类中只能访问public类中的public、internal修饰的成员；但不能访问A类中的private和protected；

            B nal = new B();
            nal.X = 1;
            nal.Y = 1; //其他类中只能访问internal类中的public、internal修饰的成员；但不能访问B类中的private和protected；

            C pro = new C();
            pro.X = 1;
            pro.Y = 2;
            pro.M = 3;
            pro.N = 4;  //其他类中只能访问internal\public类中的public、internal修饰的成员；但不能访问A、C类中的private和protected；

            Console.ReadKey ();
           
        }
    }
}