C#

using System.Collections.Generic;<br />
using System;<br />
<br />
class TestApplication {<br />
<br />
static void Main() {<br />
FindByTypeName("Customer");<br />
FindByTypeName("Product");<br />
}<br />
<br />
static object[] FindByTypeName(string typename) {<br />
<br />
Type t = Type.GetType(typename);<br />
ActiveRecordBase<object> entity = (ActiveRecordBase<object>)<br />
System.Activator.CreateInstance(t);<br />
<br />
// Error: Static member 'ActiveRecordBase<object>.FindAll()' cannot be<br />
// accessed with an instance reference; qualify it with a type name<br />
//instead<br />
return entity.FindAll();<br />
<br />
}<br />
<br />
}<br />
<br />
class Customer : ActiveRecordBase<Customer> {}<br />
<br />
class Product : ActiveRecordBase<Product> {}<br />
<br />
public class ActiveRecordBase<T> {<br />
  public static T[] FindAll() {<br />
    // method implementation skipped<br />
   return null;<br />
   }<br />
} 

Program.cs
--------------------
using System;
using System.Collections.Generic;
using System.Text;

namespace TestConsole
{

//  public  class MainConsole  
//  program is built successfully when using this line instead of the bottom one
    
    class MainConsole // default scope for this class??
    {
        public const int myAge = 27;

        public int returnZero()
        {
            return 0;
            //return (number1 + number2);
        }
        static void Main(string[] args)
        {
            Console.WriteLine("Start program");
        }
    }

myClass.cs
---------------------------
using System;
using System.Collections.Generic;
using System.Text;

namespace TestConsole
{
    class myClass : TestConsole.MainConsole
    {
        private int Age;
        public myClass()
        {
            //initialize Age to zero (long-winded)
            Age = base.returnZero();
        }
    }
}