void VerticalScrollBarMargin_IsVisibleChanged(object sender, DependencyPropertyChangedEventArgs e)
{
if (Visibility == Visibility.Visible)
{
RegisterEvents();
UpdateMinMax();
LargeChange = scrollMap.ThumbSize;
ViewportSize = scrollMap.ThumbSize;
Value = scrollMap.GetCoordinateAtBufferPosition(FirstVisibleLinePoint);
}
else
{
UnregisterEvents();
}
}
public double GetCoordinateAtBufferPosition(SnapshotPoint bufferPosition)
{
return(_scrollMap.GetCoordinateAtBufferPosition(bufferPosition));
}