C#

racing57 wrote:

I currently write software using VC++ and have done for the last 5 years, i am looking to migrate to C# and am wondering if anyone can recommend some books that would be usefull bearing in mind my last 5yrs experience..

Nader Elshehabi wrote:

Abstract classes uses only static methods and fields

Nader Elshehabi wrote:

You can't instantiate them

Nader Elshehabi wrote:

and how could your inherited class have a "parent"?

Nader Elshehabi wrote:

I can't really think of a way to solve it "this way". But eigther your put only static methods and fields in your base class, or remove the abstraction?

public abstract Setting
{
    protected void Init(...)
    {
        Initialise the base class members here.
    }
}
 
public CollectionSetting
{
    public CollectionSetting(...)
    {
        base.Init(...);
    }
}

public abstract class BaseClass {
    protected string name;
    public BaseClass(string name) {
        this.name = name;
    }
}
public class ChildClass : BaseClass {
    public ChildClass(string name) : base(name) {
    }
}

public abstract class Setting {
}

public class SimpleSetting : Setting {
    private Setting parent;
    public SimpleSetting() {
    }
    public SimpleSetting(Setting parent) {
        this.parent = parent;
    }
}
public class CollectionSetting : Setting {
    private Setting parent;
    public CollectionSetting(Setting parent) {
        this.parent = parent;
    }
}

public class Test {
    static void Main(string[] args) {
        Setting s = new CollectionSetting(new SimpleSetting());
    }
}

BoneSoft wrote:

you can have constructors on abstract classes, inheriting classes can access them. It's not the best practice, because then all inheriting class must have a constructor with matching signature, but you can do it.