MapObject23的Recordset对象效率很低不知道什么原因

<P>下面这段代码，运行时，500条记录要30秒，很慢，哪位高手指点一下</P>
<P> Public Sub FillFeatures()</P>
<P>        Dim frmO As frmMain = Me.Owner
        Dim row As DataRow
        Dim i As Integer
        Dim iCount As Integer = 0
        Dim lvItem As ListViewItem
        Dim tt As String</P>
<P>        Assistant.SelectedRecordset.MoveFirst()
        While Not Assistant.SelectedRecordset.EOF
            lvItem = New ListViewItem(Assistant.SelectedRecordset.Fields.Item(arrCols(0)).ValueAsString)
            For i = 1 To iFieldCount - 1
                lvItem.SubItems.Add(Assistant.SelectedRecordset.Fields.Item(arrCols(i)).ValueAsString)
            Next
            lvFeatures.Items.Add(lvItem)</P>
<P>            Assistant.SelectedRecordset.MoveNext()
            iCount += 1</P>
<P>            lblFeatureCount.Text = iCount.ToString()
        End While
        'lblFeatureCount.Text = iCount.ToString()
    End Sub</P>

没法啦！