i> 使用下方复制函数的类,都需要在类前添加 [Serializable]
,让类支持序列化。
1:利用反射实现
public static T DeepCopy<T>(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, DeepCopy(field.GetValue(obj))); }
catch { }
}
return (T)retval;
}
2:利用xml序列化和反序列化实现
public T DeepCopy<T>(T obj)
{
object retval;
using (MemoryStream ms = new MemoryStream())
{
XmlSerializer xml = new XmlSerializer(typeof(T));
xml.Serialize(ms, obj);
ms.Seek(0, SeekOrigin.Begin);
retval = xml.Deserialize(ms);
ms.Close();
}
return (T)retval;
}
3:利用二进制序列化和反序列化实现
public static T DeepCopy<T>(T obj)
{
object retval;
using (MemoryStream ms = new MemoryStream())
{
BinaryFormatter bf = new BinaryFormatter();
//序列化成流
bf.Serialize(ms, obj);
ms.Seek(0, SeekOrigin.Begin);
//反序列化成对象
retval = bf.Deserialize(ms);
ms.Close();
}
return (T)retval;
}
转载自 https://www.cnblogs.com/yuilin/archive/2011/10/28/2227881.html
另有一篇写深度复制的,介绍的比较全面,也可以看一下。里面提到了使用Clone比New对象效率更高
,又涨了见识,有机会要实验一下。
https://www.cnblogs.com/chenwolong/p/MemberwiseClone.html
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