无需序列化即可克隆对象 [英] Cloning objects without Serialization

问题描述

我在SO上找到了许多解决方案，否则它们通过序列化/反序列化（进入内存和返回）来处理对象的深克隆。

I've found numerous solutions here at SO and elsewere that deal with deep clone of object via serialization/deserialization (into memory and back).

要克隆的类标记为 [Serializable] 。我碰巧将我的类（其中大多数是用 [DataContract] 标记）的，因为我使用了 DataContractSerializer 进行序列化XML。

It requires that classes to be cloned are marked with [Serializable]. I happen to have my classes (well most of them) marked with [DataContract] because I use DataContractSerializer to serialize into XML.

我只介绍了 [Serializable] 属性，因为需要深度克隆其中一些类实例。但是，现在通过DCS进行序列化/反序列化时发生了一些事情，因为它不再起作用了-有关在反序列化中期望使用其他XML元素的错误。如果删除 [可序列化] ，错误就消失了。

I only introduced [Serializable] attribute because of the need for deep clone of some of these class instances. However, now something happened to serialization/deserialization via the DCS because it does not work anymore - errors about expecting a different XML element on deserialization. If I remove the [Serializable] the errors are gone.

我有什么选择？我只是想尽可能地简单地克隆对象。

What are my options? I just want to deep clone my objects as simple as possible.

推荐答案

这可行

    public static T DeepClone<T>(this T a)
    {
        using (MemoryStream stream = new MemoryStream())
        {
            DataContractSerializer dcs = new DataContractSerializer(typeof(T));
            dcs.WriteObject(stream, a);
            stream.Position = 0;
            return (T)dcs.ReadObject(stream);
        }
    }

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