winfrom中使用cache

using System;
using System.Collections.Generic;
using System.Text;
using System.Web;
using System.Web.Caching;
using System.Threading;


namespace NPao.Tools.EntityDesign
{
    public class CacheConfig
    {
        private static HttpRuntime _httpRuntime;

        public static Cache Cache
        {
            get
            {
                EnsureHttpRuntime();
                return HttpRuntime.Cache;
            }
        }

        private static void EnsureHttpRuntime()
        {
            if (null == _httpRuntime)
            {
                try
                {
                    Monitor.Enter(typeof(CacheConfig));
                    if (null == _httpRuntime)
                    {
                       // Create an Http Content to give us access to the cache.
                        _httpRuntime = new HttpRuntime();
                   }
                }
                finally
                {
                    Monitor.Exit(typeof(CacheConfig));
                }
            }
        }

    }
}

使用:
string s = CacheConfig.Cache["txt"] as string;
            if (!string.IsNullOrEmpty(s))
                MessageBox.Show(s);
            else
                CacheConfig.Cache.Insert("txt",txtConnStr.Text);