/// <summary>
/// Called when the cancel button is pressed. This discards any changes made to
/// the data objects.
/// </summary>
protected internal override void cancel()
{
StateMod_InstreamFlow isf = null;
int size = _data.Count;
for (int i = 0; i < size; i++)
{
isf = (StateMod_InstreamFlow)_data[i];
isf.restoreOriginal();
}
}