1. ICloneable实现
class MyClass : ICloneable
{
public int val;
public Object Clone()
{
MyClass myCls = new MyClass();
myCls.val = this.val;
return myCls;
}
}
class Program
{
static void Main(string[] args)
{
MyClass objectA = new MyClass();
MyClass objectB = objectA.Clone() as MyClass;
objectA.val = 10;
objectB.val = 20;
Console.WriteLine("objectA.val = {0}", objectA.val);
Console.WriteLine("objectB.val = {0}", objectB.val);
Console.ReadKey();
}
}
2. 反射机制实现
class MyClass : ICloneable
{
public int val;
}
class Program
{
static void Main(string[] args)
{
MyClass objectA = new MyClass();
MyClass objectB = DeepCopyByReflection(objectA);
objectA.val = 10;
objectB.val = 20;
Console.WriteLine("objectA.val = {0}", objectA.val);
Console.WriteLine("objectB.val = {0}", objectB.val);
Console.ReadKey();
}
///
/// 反射机制
///
///
/// 拷贝的对象
///
public static T DeepCopyByReflection
{
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.Static | BindingFlags.Instance);
foreach (var field in fields)
{
try
{
field.SetValue(retval, DeepCopyByReflection(field.GetValue(obj)));
}
catch { }
}
return (T)retval;
}
}
3. 序列化：
[Serializable]
class MyClass : ICloneable
{
public int val;
}
class Program
{
static void Main(string[] args)
{
MyClass objectA = new MyClass();
MyClass objectB = DeepCopyByBinary(objectA);
objectA.val = 10;
objectB.val = 20;
Console.WriteLine("objectA.val = {0}", objectA.val);
Console.WriteLine("objectB.val = {0}", objectB.val);
Console.ReadKey();
}
///
/// 二进制序列化拷贝
///
///
///
///
public static T DeepCopyByBinary
{
object retval;
using (MemoryStream ms = new MemoryStream())
{
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(ms, obj);
ms.Seek(0, SeekOrigin.Begin);
retval = bf.Deserialize(ms);
ms.Close();
}
return (T)retval;
}
}
