反射

    public static T DeepCopyByReflect(T obj)
    {
        //如果是字符串或值类型则直接返回
        if (obj is string || obj.GetType().IsValueType) return obj;

        object retval = Activator.CreateInstance(obj.GetType());
        FieldInfo[] fields = obj.GetType().GetFields(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.Static);
        foreach (FieldInfo field in fields)
        {
            try { field.SetValue(retval, DeepCopyByReflect(field.GetValue(obj))); }
            catch { }
        }
        return (T)retval;
    }