C#Copy

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(8);
MessageBox.Show("" + lcopy.Val);
//8
LightCopy lcopy1 = (LightCopy)lcopy.getCopy();
MessageBox.Show("" + lcopy1.Val);
//8
lcopy1.Val = 3;
MessageBox.Show("" + lcopy1.Val);
//3
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(8);
MessageBox.Show("" + lcpy.myContent.Val);
//8
LightCopylcpy1 = (DeepCopy)lcpy.getCopy();
MessageBox.Show("" + lcpy1.myContent.Val);
//8
lcpy.myContent.Val = 3;
MessageBox.Show("" + lcpy1.myContent.Val);
//3
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(0, SeekOrigin.Begin);
return formatter.Deserialize(objectStream) as DeepCopy;
}
}