nHydrate.Generator.Models.Table.GetColumnsNotInBase C# (CSharp) Method

        public ColumnCollection GetColumnsNotInBase()
        {
            try
            {
                var nameList = new List<string>();
                var fullList = GetColumnsFullHierarchy(false);

                var currentList = new List<Column>();
                foreach (var c in this.GetColumns())
                    currentList.Add(c);

                var delList = new List<Column>();
                foreach (var c in currentList)
                {
                    if (fullList[c.Name] != null)
                    {
                        delList.Add(c);
                    }
                }

                foreach (var c in delList)
                {
                    currentList.Remove(c);
                }

                var retval = new ColumnCollection(this.Root);
                foreach (var c in currentList)
                    retval.Add(c);
                return retval;

            }
            catch (Exception ex)
            {
                throw;
            }
        }