System.Web.Caching

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1. public void AddItemToCache(Object sender, EventArgs e) {
   
2.     itemRemoved = false;
   
3. 
   
4.     onRemove = new CacheItemRemovedCallback(this.RemovedCallback);
   
5. 
   
6.     if (Cache["Key1"] == null)
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7.       Cache.Add("Key1", "Value 1", null, DateTime.Now.AddSeconds(60), TimeSpan.Zero, CacheItemPriority.High, onRemove);
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8. }

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详见：http://msdn.microsoft.com/zh-cn/ ... b.caching.cache.add(VS.80).aspx