Properly Implementing the Decorator Pattern

BaseDecorator.cs

using System;

/// <summary>
/// The object which adds responsibilities to
/// a base instance.
/// <para>The Decorator pattern is a structural pattern, whose
/// purpose is to attach additional responsibilities to 
/// an object dynamically keeping the same interface. </para>
/// </summary>
public class BaseDecorator : IBase
{
    private IBase Instance { get; set; }

    public BaseDecorator(IBase instance)
    {
        Instance = instance;
    }

    public void DoWork()
    {
        //Perform default responsibilities.
        Instance.DoWork();

        // Add responsibilities here.
    }
}

IBase.cs

using System;

/// <summary>
/// The base interface.
/// </summary>
public interface IBase
{
    void DoWork();
}