Self-implemented. NET Cache Class (original)

     Public classCachecontainer {Private StaticHashtable HT =NewHashtable (); /// <summary>        ///objId: Cache id,objobject: Cache object, Expires: Absolute Expiration Time/// </summary>        /// <param name= "ObjId" ></param>        /// <param name= "Objobject" ></param>        /// <param name= "Expires" ></param>         Public voidAddObject (stringObjId,ObjectObjobject, DateTime expires) {Containeritem Item=NewContaineritem () {Expires = Expires, Objobject =Objobject}; Ht[objid]=item; }        /// <summary>        ///default cache 20 minutes/// </summary>        /// <param name= "ObjId" ></param>        /// <param name= "Objobject" ></param>         Public voidAddObject (stringObjId,Objectobjobject) {AddObject (objId, Objobject, DateTime.Now.AddMinutes ( -)); }         Public ObjectGetcacheobj (stringobjId) {            Objectresult =NULL; if(HT. Contains (objId)) {varitem =(Containeritem) Ht[objid]; if(datetime.now<item. Expires) {result=item.                Objobject; }                Else{ht.                Remove (OBJID); }            }            returnresult; }        /// <summary>        ///ObjID exists then deleted, otherwise not processed/// </summary>        /// <param name= "ObjId" ></param>         Public voidRemoveobject (stringobjId) {            if(HT. Contains (ObjId)) {ht.            Remove (OBJID); }        }    }     Public classContaineritem { Public ObjectObjobject {Get;Set; }  PublicDateTime Expires {Get;Set; } }