IComponent.cs

using System.ComponentModel.Design;
using System.ComponentModel.Design.Serialization;
using System.Runtime.InteropServices;

namespace System.ComponentModel
{
    [RootDesignerSerializer("System.ComponentModel.Design.Serialization.RootCodeDomSerializer, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", "System.ComponentModel.Design.Serialization.CodeDomSerializer, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", true)]
    [Designer("System.ComponentModel.Design.ComponentDesigner, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(IDesigner))]
    [Designer("System.Windows.Forms.Design.ComponentDocumentDesigner, System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a", typeof(IRootDesigner))]
    [TypeConverter(typeof(ComponentConverter))]
    [ComVisible(true)]
    public interface IComponent : IDisposable
    {
        ISite Site
        {
            get;
            set;
        }

        event EventHandler Disposed;
    }
}