source/App_Code/SortHashtable.cs

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using System;
using System.Data;
using System.Configuration;
//
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
//
using System.Collections;

/// <summary>
///SortHashTable 的摘要说明
/// </summary>
public class SortHashtable : Hashtable
{
    private ArrayList list = new ArrayList();

    public SortHashtable()
    {
        //
        //TODO: 在此处添加构造函数逻辑
        //
    }

    public override void Add(object key, object value)
    {
        base.Add(key, value);
        list.Add(key);
    }

    public override void Clear()
    {
        base.Clear();
        list.Clear();
    }

    public override void Remove(object key)
    {
        base.Remove(key);
        list.Remove(key);
    }

    public override ICollection Keys
    {
        get
        {
            return list;
        }
    }
}