protected override void OnDragDelta()
{
var newValue = _resized = _resized + MouseDeltaX;
newValue = Math.Max(newValue, MinLength);
newValue = Math.Min(newValue, MaxLength);
_resized += newValue - _resized;
_gridTrack.Resize(new GridLength(newValue, GridUnitType.Pixel));
}
protected override void OnEndDrag(UIElement dragElement, bool abort)
{
if (abort)
{
ResizeTo(_oldValue);
}
else if (IsShiftKeyDown)
{
_gridTrack.Resize(_rowPresenter.GetLength(_gridTrack));
}
}