c# - convert a cached item to a specific object type for return by webmethod -

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I have successfully cached a large data object in the web service, but if I run that cached item later Instead of wanting to revert long queries, how can I convert generic cached items to an object in my own design?

Like 

  HttpContext.Current.Cache.Insert ("cItem", [MIITEM]));   
 then  
  returns HTTPPCTEx. Running Cache ["CITIM"];   
 The view will show an error in the studio because I can not change the type 'object' in its own way thanks to any pointer   
 
 
 and  MyItem  can be converted to a  object , then reverse explicitly Is not true from.  
 So if your method has a return type of  myitm  then you will need to insert the cached item:  
  Public Maitrem () {} (MyEstm) HTTP Contex Current.catch ["ceist"]; }   
 This is done while receiving it from the cache, not when it is stored in it.  
 If there is a possibility that the item  is not  of the expected type, you will in any case handle the situation, throw the above code a  invalid cut exception  If this happens, if you want to return only  null  to that condition, then you can try doing it instead:  
  Public MyItem MyMethod () MyItem as {HttpContext.Current.Cache {"cItem"]; }

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