using System.IO;
using System.Runtime.Serialization.Formatters.Binary;

namespace Extend
{
    //
    // 摘要:
    //     深拷贝类
    public static class Clone
    {
        // Deep clone
        public static T DeepClone<T>(this T obj)
        {
            using (var ms = new MemoryStream())
            {
                var formatter = new BinaryFormatter();
                formatter.Serialize(ms, obj);
                ms.Position = 0;

                return (T)formatter.Deserialize(ms);
            }
        }
    }
}

参考：https://stackoverflow.com/questions/129389/how-do-you-do-a-deep-copy-of-an-object-in-net