C#

b myClassAb = new D1();
          b newClassAb = myClassAb.Create<D1>();
          newClassAb.KM = 1.23;

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
 
namespace general
{
 
class Program
{
static void Main(string[] args)
{

 
//this is what I would like
b myClassAb = new D1();
b newClassAb = myClassAb.Create();
Console.WriteLine(newClassAb.KM);
}
}


abstract class b
{
    public double KM { get; protected set; }  // C# 2.0 automatic property syntax
    public b Create() { return (b)Activator.CreateInstance(GetType()); }
}

class D1 : b
{
    public D1() { KM = 1.0; }
}
class D2 : b
{
    public D2() { KM = 2.0; }
}
}

abstract class b
{
    public double KM { get; protected set; }  // C# 2.0 automatic property syntax
    public b Create() { return Activator.CreateInstance(GetType()); }
}

class D1:b
{
    public D1() { KM = 1.0; }
}
class D2 : b
{
    public D2() { KM = 2.0; }
}

namespace general
{
 
class Program
{
static void Main(string[] args)
{

 
//this is what I would like
b myClassAb = new D1();
b newClassAb = myClassAb.Create();
    Console.WriteLine(b.//K is still not avaiable!!}
}


abstract class b
{
    public double KM { get; protected set; }  // C# 2.0 automatic property syntax
    public b Create() { return (b)Activator.CreateInstance(GetType()); }
}

class D1 : b
{
    public D1() { KM = 1.0; }
}
class D2 : b
{
    public D2() { KM = 2.0; }
}

D1 obj = new D1();
D1 obj2 = D1.Create();

D1 obj = new D1();
D1 obj2 = new D1();

abstract class BaseClass
{
    public static T Create<T>() where T : BaseClass, new()
    {
        return new T();
    }
}

class DerivedClass : BaseClass { }

DerivedClass obj = BaseClass.Create<DerivedClass>();

class D1:b
  {
      ..
      public D1 Create() { return new D1(); }
  }
  class D2 : b
  {
      ..
      public D2 Create() { return new D2(); }
  }

D1 obj = new D1();
D1 obj2 = D1.Create();

b myClassAb = new D1();
b newClassAb = myClassAb.Create();
Console.WriteLine(newClassAb.KM); //i.e. I need to access to proprieties, methods, etc of class

Member 4282287 wrote:

I need to access to proprieties, methods, etc of class

b myClassAb = new D1();
b newClassAb = myClassAb.Create();
Console.WriteLine(newClassAb.KM)

b myClassAb = new D1();
Console.WriteLine(myClassAb.KM)

public interface ICalculator
{
    event EventHandler CalculationPerformed;
    event EventHandler<int> CalculatedResult;

    int Add(int Number1, int Number2);
}

public class ManagedClass : ICalculator
{
    public event EventHandler CalculationPerformed;
    public event EventHandler<int> CalculatedResult;

    public int Add(int number1, int number2)
    {
        int result = number1 + number2;
        OnCalculationPerformed(EventArgs.Empty);
        OnCalculatedResult(new EventArgs<int>(result));
        return result;
    }
    protected virtual void OnCalculationPerformed(EventArgs e)
    {
        EventHandler eh = CalculationPerformed;
        if (eh != null)
            eh(this, e);
    }
    protected virtual void OnCalculatedResult(EventArgs<int> e)
    {
        EventHandler<int> eh = CalculatedResult;
        if (eh != null)
            eh(this, e);
    }
}

public delegate void EventHandler<T>(object sender, EventArgs<T> e);
public class EventArgs<T> : EventArgs
{
    private T value;

    public EventArgs(T value)
    {
        this.value = value;
    }

    public T Value
    {
        get { return value; }
    }
}