Public Class ListC(Of T)
    Inherits System.Collections.Generic.List(Of cElement(Of T))
 
    Public Class cElement(Of T)
        Dim _Ival As T
        Public Property Value() As T
            Get
                Return _Ival
            End Get
            Set(ByVal value As T)
                _Ival = value
            End Set
        End Property
        Public Sub New(ByVal element As T)
            _iVal = element
        End Sub
    End Class
 
    Public Sub addE(ByVal element As T)
        MyBase.Add(New cElement(Of T)(element))
    End Sub
 
    Public Property ItemE(ByVal index As Integer) As T
        Get
            Return MyBase.Item(index).Value
        End Get
        Set(ByVal value As T)
            MyBase.Item(index).Value = value
        End Set
    End Property
End Class

Dim dgv As New System.Windows.Forms.DataGridView
Dim bs As New BindingSource    
 
Dim ls_int As New ListC(Of Integer)
ls_Int.addE(5)
ls_int.addE(9)
 
bs.DataSource = ls_int
dgv.DataSource = bs