protected static ITextRange CompareRegions(
OutlineRegionCollection newRegions,
OutlineRegionCollection oldRegions, int upperBound)
{
TextRangeCollection <OutlineRegion> oldClone = null;
TextRangeCollection <OutlineRegion> newClone = null;
if (oldRegions != null)
{
oldClone = oldRegions.Clone() as OutlineRegionCollection;
oldClone.Sort();
}
newClone = newRegions.Clone() as OutlineRegionCollection;
newClone.Sort();
return(newClone.RangeDifference(oldClone, 0, upperBound));
}
