Click here to Skip to main content
13,048,846 members (76,548 online)
Click here to Skip to main content
Articles » Languages » C# » Enumerations » Downloads


14 bookmarked
Posted 2 Apr 2008

Tree Structured Enumerations

, 2 Apr 2008
The way to maintain a tree structured enumeration while having all the advantages of the standard ones
using System;
using System.Collections.Generic;

namespace TreeStructuredEnumerations
    public class EnumUtility
        public static bool IsChild<TType>(TType child, TType parent)
            Type enumType = typeof(TType);
            Object[] attributeList = enumType.GetCustomAttributes(typeof(StructuredAttribute), true);

            if (attributeList.Length > 0)
                StructuredAttribute attribute = (StructuredAttribute)attributeList[0];
                int span = attribute.Span;
                int parentIndex = (int)Convert.ChangeType(parent, typeof(int));
                int childIndex = (int)Convert.ChangeType(child, typeof(int));
                int index = childIndex / span;
                return (index == parentIndex && childIndex != parentIndex);

            return true;

        public static List<TType> CreateList<TType>(TType parent)
            List<TType> result = new List<TType>();
            Type enumType = typeof (TType);
            TType[] enumValues = (TType[]) Enum.GetValues(enumType);

            foreach (TType enumValue in enumValues)
                if (IsChild(enumValue, parent))

            return result;

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


About the Author

Smart K8
Software Developer
Czech Republic Czech Republic
Contacts: EMAIL -

You may also be interested in...

Permalink | Advertise | Privacy | Terms of Use | Mobile
Web02 | 2.8.170713.1 | Last Updated 2 Apr 2008
Article Copyright 2008 by Smart K8
Everything else Copyright © CodeProject, 1999-2017
Layout: fixed | fluid