1、浅拷贝(值类型):
public class LightCopy
{
public int Val
{
get;
set;
} public LightCopy(int ival)
{
Val = ival;
} public object getCopy()
{
return MemberwiseClone(); //浅表副本
}
}
测试代码及结果
LightCopy lcopy = new LightCopy();
MessageBox.Show("" + lcopy.Val); //
LightCopy lcopy1 = (LightCopy)lcopy.getCopy();
MessageBox.Show("" + lcopy1.Val); //
lcopy1.Val = ;
MessageBox.Show("" + lcopy1.Val); //
MessageBox.Show("" + lcopy.Val); //8
2、浅拷贝(引用类型):
public class Content
{
public int Val
{
get;
set;
}
} public class LightCopy
{
public Content myContent; public LightCopy(int val)
{
myContent = new Content();
myContent.Val = val;
} public object getCopy()
{
return MemberwiseClone();
} }
测试代码及结果
LightCopy lcpy = new LightCopy();
MessageBox.Show("" + lcpy.myContent.Val); //
LightCopylcpy1 = (DeepCopy)lcpy.getCopy();
MessageBox.Show("" + lcpy1.myContent.Val); //
lcpy.myContent.Val = ;
MessageBox.Show("" + lcpy1.myContent.Val); //
MessageBox.Show("" + lcpy.myContent.Val); //3
3、深拷贝
#region ICloneable 成员 //如果类型继承自ICloneable,但是同时它不是一个Sealed类型的话,它们的子类的默认Clone方法会带来BUG(子类的Clone方法会返回父类的副本,而不是子类本身)。这会逼迫所有的子类都重写Clone方法;
public object Clone()
{
//DeepCopy deepcpy = new DeepCopy(myContent.Val);
return this.MemberwiseClone();//浅拷贝
} #endregion //深拷贝
public DeepCopy DeepClone()
{
using (Stream objectStream = new MemoryStream())
{
IFormatter formatter = new BinaryFormatter();
formatter.Serialize(objectStream, this);
objectStream.Seek(, SeekOrigin.Begin);
return formatter.Deserialize(objectStream) as DeepCopy;
}
}