今天遇到的一个郁闷的问题。

using System;
using System.Collections.Generic;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            CC1.GetC().A();
            
            CC2.GetC().A();
            Console.Read();
        }
    }


    public class CC1
    {
        private CC2 c2 = CC2.GetC();

        private static CC1 c1=new CC1();
        public static CC1 GetC()
        {
            return c1;
        }

        public void A()
        {
            c2.Write();
        }
        public void Write()
        {
            Console.WriteLine("CC1的Write()");
        }
    }
    public class CC2
    {
        private CC1 c1 = CC1.GetC();

        private static CC2 c2 = new CC2();
        public static CC2 GetC()
        {
            return c2;
        }
        public void Write()
        {
            Console.WriteLine("CC2的Write()");
        }
        public void A()
        {
            c1.Write();
        }
    }
}

运行后就给我提示一个
public void A()
        {
            c1.Write();
        }
c1未将对象设置到实例的错，想了半天也想不通，留在这里以后再想想。