System.Data.DataTable.GetInheritedNamespace C# (CSharp) Method

        private string GetInheritedNamespace(List<DataTable> visitedTables)
        {
            // if there is nested relation: ie: this table is nested child of a another table and
            // if it is not self nested, return parent tables NS: Meanwhile make sure
            DataRelation[] nestedRelations = NestedParentRelations;
            if (nestedRelations.Length > 0)
            {
                for (int i = 0; i < nestedRelations.Length; i++)
                {
                    DataRelation rel = nestedRelations[i];
                    if (rel.ParentTable._tableNamespace != null)
                    {
                        return rel.ParentTable._tableNamespace; // if parent table has a non-null NS, return it
                    }
                }
                // Assumption, in hierarchy of multiple nested relation, a child table with no NS, has DataRelation
                // only and only with parent DataTable witin the same namespace
                int j = 0;
                while (j < nestedRelations.Length && ((nestedRelations[j].ParentTable == this) || (visitedTables.Contains(nestedRelations[j].ParentTable))))
                {
                    j++;
                }
                if (j < nestedRelations.Length)
                {
                    DataTable parentTable = nestedRelations[j].ParentTable;
                    if (!visitedTables.Contains(parentTable))
                        visitedTables.Add(parentTable);
                    return parentTable.GetInheritedNamespace(visitedTables);// this is the same as return parentTable.Namespace
                }
            } // dont put else

            if (DataSet != null)
            {
                // if it cant return from parent tables, return NS from dataset, if exists
                return DataSet.Namespace;
            }
            else
            {
                return string.Empty;
            }
        }