Private Lista_dati As New Threading.Thread(AddressOf caricagriglia)
    Private Sub Iva_Shown(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Shown
        Lista_dati.Start()
    End Sub

    Private Sub caricagriglia()
        Me.ListView1.BeginUpdate()
        Me.ListView1.Clear()
        Me.Label5.Visible = True
        My.Application.DoEvents()
        '-----carimento elenco dati
        SqlCmd.CommandText = "Select * From Tab_Iva Order By id"
        SqlCmd.Connection = Db
        SqlCmd.CommandType = CommandType.Text
        SqlDr = SqlCmd.ExecuteReader
        While SqlDr.Read
            litem = ListView1.Items.Add(SqlDr.GetSqlInt32(0).Value)
            Sublist = litem.SubItems.Add(SqlDr.GetSqlString(1).Value)
            Sublist = litem.SubItems.Add(SqlDr.GetSqlString(2).Value)
        End While
        Me.ListView1.EndUpdate()
        SqlDr.Close()
        SqlCmd.Dispose()
        '--------------------------
        My.Application.DoEvents()
        Me.Label5.Visible = False
    End Sub

ed è uscit il seguente errore:

Cross-thread operation not valid: Control 'ListView1' accessed from a thread other than the thread it was created on.