Lu,
désolé mais je connais pas le vb.net,sinon pour te faire une idée voici un exemple en vb
'dans un module
Declare Function SetRect Lib "user32" (lpRect As RECT, ByVal X1 As Long, ByVal Y1 As Long, ByVal X2 As Long, ByVal Y2 As Long) As Long
Declare Function ScrollDC Lib "user32" (ByVal hdc As Long, ByVal dx As Long, ByVal dy As Long, lprcScroll As RECT, lprcClip As RECT, ByVal hrgnUpdate As Long, lprcUpdate As RECT) As Long
Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Public Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
'dans une form
Private Sub Command1_Click()
Dim HdcWeb As Long: HdcTxtWeb = GetDC(WebBrowser.hwnd)
With WebBrowser
SetRect RClip, 0, 1, .Width, .Height
ScrollDC HdcTxt, 0, -1, RClip, RClip, 0, RUpdate
End With
End Sub