how to read scrollbar position?[c#]

Hi,
    try this code

Option Explicit On
Option Strict On
Imports System.Runtime.InteropServices.Marshal

Public Class Form1
Inherits System.Windows.Forms.Form

Dim si As New SCROLLINFO()

Declare Function GetScrollInfo Lib "user32" Alias "GetScrollInfo" _
(ByVal hWnd As IntPtr, ByVal n As Integer, ByRef
lpScrollInfo As SCROLLINFO) As Integer

Declare Function SetScrollInfo Lib "user32" Alias "SetScrollInfo" _
(ByVal hWnd As IntPtr, ByVal n As Integer, _
ByRef lpcScrollInfo As SCROLLINFO, ByVal bool As Boolean) As Integer

Public Structure SCROLLINFO
Public cbSize As Integer
Public fMask As Integer
Public nMin As Integer
Public nMax As Integer
Public nPage As Integer
Public nPos As Integer
Public nTrackPos As Integer
End Structure

Private Const SB_HORZ As Integer = 0
Private Const SB_VERT As Integer = 1

Private Const SIF_RANGE As Integer = &H1
Private Const SIF_PAGE As Integer = &H2
Private Const SIF_POS As Integer = &H4
Private Const SIF_TRACKPOS As Integer = &H10
Private Const SIF_ALL As Integer = SIF_RANGE Or SIF_PAGE Or SIF_POS Or
SIF_TRACKPOS



Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As
System.EventArgs) Handles Button1.Click

si.cbSize = SizeOf(si)
si.fMask = SIF_ALL
GetScrollInfo(ListView1.Handle, SB_VERT, si)
si.nPos = si.nMax
SetScrollInfo(ListView1.Handle, SB_VERT, si, True)

End Sub

End Class