public override void OnRemovingRange(RangeRegionCancelEventArgs e)
{
base.OnRemovingRange(e);
RangeRegionChangingEventArgs regionChanging = new RangeRegionChangingEventArgs(e.RangeRegion, new SourceGrid.RangeRegion(), new SourceGrid.RangeRegion());
PositionCollection exploredPos = new PositionCollection();
do
{
regionChanging.RegionToExclude.Clear();
regionChanging.RegionToInclude.Clear();
PositionCollection positions = e.RangeRegion.GetCellsPositions();
for (int i = 0; i < positions.Count; i++)
{
if (exploredPos.Contains(positions[i]) == false)
{
CellContext cellContext = new CellContext(Grid, positions[i]);
Grid.Controller.OnSelectionRemoving(cellContext, regionChanging);
exploredPos.Add(positions[i]);
}
}
regionChanging.CurrentRegion.Add(regionChanging.RegionToInclude);
regionChanging.CurrentRegion.Remove(regionChanging.RegionToExclude);
} while (!regionChanging.RegionToExclude.IsEmpty() || !regionChanging.RegionToInclude.IsEmpty());
}
