Clone in Constructor

[csharpdummy]

I would like to add a clone method in a constructor.
I tried the following, but it doesn't work.

public test(MyClass A)
{
this=A.Clone();
}
Is there a way to do this?
How would that look like for a base vs. derived class?

Thanks

 

[Registered User]

I would like to add a clone method in a constructor.
I tried the following, but it doesn't work.

public test(MyClass A)
{
this=A.Clone();
}
Is there a way to do this?

Yes but not like that. Use an overloaded constructor to return a shallow copy of
instance passed as the argument.

public class MyClass
{
public string S {get;set;}
public bool B {get;set;}
...
public MyClass(){}
public MyClass(MyClass a)
{
this.S = a.S;
this.B = a.B;
...
}
...
}

How would that look like for a base vs. derived class?

Derive a type from MyClass and work from there to answer this question.

regards
A.G.

 

[CSharpDummy]

Yes but not like that. Use an overloaded constructor to return a shallow copy of
instance passed as the argument.

public class MyClass
{
public string S {get;set;}
public bool B {get;set;}
...
public MyClass(){}
public MyClass(MyClass a)
{
this.S = a.S;
this.B = a.B;
...
}
...
}
Derive a type from MyClass and work from there to answer this question.

regards
A.G.

This one I knew - I was hoping there was a more elegant solution.

 

[Jeff Johnson]

This one I knew - I was hoping there was a more elegant solution.

So do you want to do this:

MyClass A = new MyClass();

MyClass B = new MyClass(A);

?

If so, why do you consider that better than

MyClass A = new MyClass();

MyClass B = (MyClass)A.Clone();

?

 

[Arne Vajhøj]

So do you want to do this:

MyClass A = new MyClass();

MyClass B = new MyClass(A);

?

If so, why do you consider that better than

MyClass A = new MyClass();

MyClass B = (MyClass)A.Clone();

?

That would be the C# way.

The copy constructor is most likely a C++ism.

Arne