------------------------------------StaticDome.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication3
{
    public class StaticDome<T>
    {
        public static int x;
    }
}

------------------------------------主程序

StaticDome<int>.x = 4;
StaticDome<string>.x = 5;
Console.WriteLine(StaticDome<int>.x);//输出4
Console.WriteLine(StaticDome<string>.x);//输出5
Console.ReadKey();