/// <summary>
/// Moves the selected indicies down.
/// </summary>
/// <param name="index">Index.</param>
/// <param name="range">Range.</param>
void MoveSelectedIndiciesDown(int index, int range)
{
var start = index + 1;
var end = start + range;
var remove_indicies = SelectedIndicies.Where(x => start <= x && x <= end).ToList();
var add_indicies = remove_indicies.Convert(x => x + range);
SilentDeselect(remove_indicies);
SilentSelect(add_indicies);
}
/// <summary>
/// Moves the selected indicies up.
/// </summary>
/// <param name="index">Index.</param>
/// <param name="range">Range.</param>
void MoveSelectedIndiciesUp(int index, int range)
{
var start = index + 1;
var end = start + range;
//deselect indicies in removed range
SelectedIndicies.Where(x => start <= x && x <= end).ForEach(Deselect);
var remove_indicies = SelectedIndicies.Where(x => x > end).ToList();
var add_indicies = remove_indicies.Select(x => x - range).ToList();
SilentDeselect(remove_indicies);
SilentSelect(add_indicies);
}