Bueno les dejo esta funcion q hace tiempo encontre y siempre se me pierde
espero ya no.....
Public Function EscalarIMagen(ByVal OldImage As Image, ByVal TargetHeight As Integer, _
ByVal TargetWidth As Integer) As System.Drawing.Image
Dim NewHeight As Integer = TargetHeight
Dim NewWidth As Integer = NewHeight / OldImage.Height * OldImage.Width
If NewWidth > TargetWidth Then
NewWidth = TargetWidth
NewHeight = NewWidth / OldImage.Width * OldImage.Height
End If
Return New Bitmap(OldImage, NewWidth, NewHeight)
End Function
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