C#复制可序列化的对象的泛型方法

        public static class ObjectCopier
        {
            public static T Clone(T source)
            {
                if (!typeof(T).IsSerializable)
                {
                    throw new ArgumentException("The type must be serializable.", "source");
                }

                if (Object.ReferenceEquals(source, null))
                {
                    return default(T);
                }

                IFormatter formatter = new BinaryFormatter();
                Stream stream = new MemoryStream();
                using (stream)
                {
                    formatter.Serialize(stream, source);
                    stream.Seek(0, SeekOrigin.Begin);
                    return (T)formatter.Deserialize(stream);
                }
            }
        }