private void FetchAllLevelRanges()
 {
     LevelRanges.Clear();
     foreach (var level in ExperienceForLevelTable.LevelRanges)
     {
         LevelRanges.Add(level);
     }
     SelectedStartLevel = LevelRanges.FirstOrDefault();
 }
        private void FetchPossibleTargetLevelRanges()
        {
            TargetLevelRanges.Clear();
            int index = LevelRanges.IndexOf(SelectedStartLevel) + 1;

            for (int i = index; i < LevelRanges.Count; i++)
            {
                TargetLevelRanges.Add(LevelRanges.ElementAt(i));
            }
            SelectedTargetLevel = TargetLevelRanges.FirstOrDefault();
        }