Public Class MyControl
    Inherits System.Windows.Forms.UserControl
 
#Region " Windows Form Designer generated code "
    Private I As Integer() = {}
 
    <Category("Whatever"), _
    Description("Collection of Integers"), _
    Browsable(True), _
    EditorBrowsable(EditorBrowsableState.Always), _
    DesignerSerializationVisibility(DesignerSerializationVisibility.Content)> _
    Public Property Integers() As Integer()
        Get
            Return I
        End Get
        Set(ByVal Value As Integer())
            I = Value
        End Set
    End Property
End Class