choicecollection.cs

一个ASP.NET下的中文内容管理和社区系统

using System;
using System.Collections;
using System.Collections.Specialized;

namespace ASPNET.StarterKit.Communities {
	// *********************************************************************
	//
	//  ChoiceCollection
	//
	/// <summary>
	/// Represents a collection of ChoiceInfo objects
	/// </summary>
	//
	// ********************************************************************/   
	public class ChoiceCollection : Hashtable {
		SortedList _orderedChoices = new SortedList();

		/// <param name="key">PollChoice_ID</param>
		/// <param name="value">ChoiceInfo</param>
		override public void Add(object key, object value) {
			_orderedChoices.Add(((ChoiceInfo)value).SortOrder,key);
			base.Add(key,value);
		}
 
		override public Object this[object key] {
			set {
				_orderedChoices.Add(((ChoiceInfo)value).SortOrder,key);
				base[key] = value;
			}
		}
 
		public ChoiceInfo this[int key] {
			get {
                return base[key] as ChoiceInfo; 				
			}
		}    
 
		public ArrayList OrderedChoices {
			get {
				ArrayList ret = new ArrayList();
				foreach (object key in _orderedChoices.Values) {
					ret.Add((ChoiceInfo)base[key]);
				}
				return ret;
			}
		}
        
		public ChoiceCollection() : base(new CaseInsensitiveHashCodeProvider(), new CaseInsensitiveComparer()) {}
	}
}