Feature from Java... is in C#? [modified]

[ika2]

Hi everybody, I was looking a java code, and I would like to translate to C#, but I don't know if this feature exits in c#. The code is this:

public class Controller implements IController{

private State state;
private Speed speed;

private ProductHandler producthandler = new ProductHandler (){

	@Override
	public void changeState(State newState) {
		state = newState;
	}

	@Override
	public Speed getSpeed() {
		return mds;
	}

	@Override
	public void send(Packet pk) {
		outputQueue.add(pk);
	}

	@Override
	public void setSpeed(Speed newSpeed) {
		speed = newSpeed;			
	}
	
};

ProductHandler is a class defined inside other class "dinamically". ProductHandler can access Controller attributes. Is this possible in C#? I have done it with events and so... but its very dirty. Is this annonymous classes, am i right? Is there something equivalent in .net 2.0? Regards

modified on Friday, January 8, 2010 2:50 PM

[Lost User]

C# has anonymous methods, but not anonymous classes. Maybe because you can use delegates, so there is no need for a whole class.. (according to the designers) Anonymous methods can access the variables of the place they were declared in as well

[Nicholas Butler]

I don't know Java, so I'm guessing a bit! If you want to declare a new class nested inside another, you can and the nested class can access all members of the outer class. If you want to extend an existing class, you can derive from it. Another option is to use extension methods, although they can only access the public members of the original class. Nick

---------------------------------- Be excellent to each other :)

[ika2]

Thanks to both. Nick, I have tried to do as you say, but I could't. Could you please paste a little example here? Thanks in advance

[Pete OHanlon]

You could simulate this using dynamic methods. Have a look around this[^] topic.

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[N a v a n e e t h]

ika2 wrote:

Is there something equivalent in .net 2.0?

C# don't support anonymous classes. It has support for anonymous types, but it will not help you in this case. I guess what you need can be achieved using nested classes. Nested class will have access to all members of the class where it is written. Here is an example.

public class Controller : IController
{
private State state;
private Speed speed;

public class ProductHandler
{
    public void ChangeState(State newState)
    {
    }
}

}

Best wishes, Navaneeth