Probleme de combobox

Réponse acceptée !
J'ai trouvé mon erreur!!!

voicice que ca prenait:

  Dim Nbitem As Integer = CInt(NombreItemInventaire.Text)
        Dim positionItemX As Integer = 106
        Dim Item As Windows.Forms.ComboBox
        Dim Source As Windows.Forms.BindingSource

        For i = 1 To Nbitem
            Item = New System.Windows.Forms.ComboBox
            Source = New System.Windows.Forms.BindingSource
            Item.Name = "Items" & CStr(i)
            Item.Location = New Point(positionItemX, positionItemY)
            positionItemX = positionItemX + 105
            Item.Width = 95
            Me.Controls.Add(Item)
            Source.DataSource = Gestion_de_ProjetsDataSet.Inventaire
            Item.DataSource = Source
            Item.DisplayMember = "description"
            Item.ValueMember = ("No_ Item")

        Next

Merci a ceux qui ont voulu m'aider.