<EditorAttribute(GetType(System.ComponentModel.Design.CollectionEditor), GetType(System.Drawing.Design.UITypeEditor))>  _
Public Property testCollection() As ICollection
   Get
      Return Icollection
   End Get
   Set
      Icollection = value
   End Set
End Property
Private Icollection As ICollection

[EditorAttribute(typeof(System.ComponentModel.Design.CollectionEditor), typeof(System.Drawing.Design.UITypeEditor))]
public ICollection testCollection
{
    get
    {
        return Icollection;
    }
    set
    {
        Icollection = value;
    }
}
private ICollection Icollection;

public:
   [EditorAttribute(System::ComponentModel::Design::CollectionEditor::typeid,
      System::Drawing::Design::UITypeEditor::typeid)]
   property ICollection^ testCollection 
   {
      ICollection^ get()
      {
         return Icollection;
      }
      void set( ICollection^ value )
      {
         Icollection = value;
      }
   }
private:
   ICollection^ Icollection;