using System;
using System.Collections.Generic;
using System.Web.Caching;
using System.Web;
/// <summary>
/// This class reads/writes to ASP .NET server cache. For the sake of 
/// simplicity, the class writes objects to cache with no expirateion.
/// Use the Remove() function to programmatically remove objects stored
/// from the server cache. This class was created as an alternative to 
/// storing large objects in the session.
/// </summary>
public class CacheHandler
{
  public static bool Write(string cacheID, object data)
  {
    if (HttpContext.Current == null)
      return false;
    if (cacheID == null || cacheID.Equals(""))
      return false;
    HttpRuntime.Cache.Insert(
        cacheID, data, null, Cache.NoAbsoluteExpiration, 
        Cache.NoSlidingExpiration, CacheItemPriority.NotRemovable, null
        );
    return true;
  }
  public static object Read(string cacheID)
  {
    if (HttpContext.Current == null)
      return null;
    return HttpRuntime.Cache.Get(cacheID);
  }
  public static void Remove(string cacheID)
  {
    if (HttpContext.Current == null )
      return;
    if (cacheID == null || cacheID.Equals(""))
      return;
    HttpRuntime.Cache.Remove(cacheID);
  }
}