public static class Session
{
    private static Hashtable table = new Hashtable();
    public object this[object key]
    {
       get
       {
            return table[key];
       }

       set
       {
            table[key] = value;
       }
    }
}

------解决方案--------------------
这点问题还要发代码哦。。。。  只能说你的思路太差了。。

C# code


public class AppDataCenter
{

  protected static SortedList<string, object> _session=new SortedList<string , object> ();
  public static SortedList<string, object> Session 
  {
    Get
    {
      return _session;
    }
  }
  public static object GetValue(string name)
 {
    object  reo = null;
    lock(_session)
    {
      if( _session.ContainsKey(name))
      {
         reo = _session[name];
      }
    }
    return reo;
 }


 public static void SetValue(string name, object OBJ )
 {
    lock(_session)
    {
      if( _session.ContainsKey(name))
      {
         _session[name]=OBJ;
      }
      else
      {
         _session.Add(name, OBJ);
      }
    }
    
 }

}

调用

myclass M = new myclass();

AppDataCenter.SetValue("abc", M) ;

myclass MC = (myclass) AppDataCenter.GetValue("abc");
if(MC!=null)
{
 .....
}