C#

Fácil de usar
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CLR
JIT

Manifest constants

vrs

Elaboration-time constants

public const string ConnectionString = "YourConnectionString";

public class TestClass  
{
    public readonly string ConnectionString = "TestConnection";

    public TestClass()
    {
        ConnectionString = "DifferentConnection";
    }

    public void TestMethod ()
    {
        ConnectionString = "NewConnection";//Will not compile
    }
}

Properties

using System;

public class Customer
{
    private int m_id = -1;

    public int GetID()
    {
        return m_id;
    }

    public void SetID(int id)
    {
        m_id = id;
    }

    private string m_name = string.Empty;

    public string GetName()
    {
        return m_name;
    }

    public void SetName(string name)
    {
        m_name = name;
    }
}

public class CustomerManagerWithAccessorMethods
{
    public static void Main()
    {
        Customer cust = new Customer();

        cust.SetID(1);
        cust.SetName("Amelio Rosales");

        Console.WriteLine(
            "ID: {0}, Name: {1}",
            cust.GetID(),
            cust.GetName());

        Console.ReadKey();
    }
}

using System;

public class Customer
{
    private int m_id = -1;

    public int ID
    {
        get
        {
            return m_id;
        }
        set
        {
            m_id = value;
        }
    }

    private string m_name = string.Empty;

    public string Name
    {
        get
        {
            return m_name;
        }
        set
        {
            m_name = value;
        }
    }
}

public class CustomerManagerWithProperties
{
    public static void Main()
    {
        Customer cust = new Customer();

        cust.ID = 1;
        cust.Name = "Amelio Rosales";

	Console.WriteLine(
            "ID: {0}, Name: {1}",
            cust.ID,
            cust.Name);

        Console.ReadKey();
    }
}

Nested Classes

public class Container
{
    public class Nested
    {
        private Container parent;

        public Nested()
        {
        }
        public Nested(Container parent)
        {
            this.parent = parent;
        }
    }
}

Partial Classes

public partial class Employee
{
    public void DoWork()
    {
    }
}

public partial class Employee
{
    public void GoToLunch()
    {
    }
}

C#

Properties

Nested Classes

Partial Classes

Delegates