ASP. NET Cache helper Class

Helper Class Code

usingSystem;usingSystem.Collections.Generic;usingSystem.Linq;usingsystem.web;usingSystem.Web.Caching;namespacebusinessrules.common{/// <summary>    ///Cache Height Caching/// </summary>     Public classCacheManager {#region--property--Private Static string_cachekey =String.Empty; Private StaticString _sqldepname ="CacheData"; /// <summary>        ///Cache index Key Values/// </summary>         Public Static stringCacheKey {Get{returnCachemanager._cachekey;} Set{Cachemanager._cachekey =value;} }        /// <summary>        ///Cache dependent name/// </summary>         Public StaticString Sqldepname {Get{returnCachemanager._sqldepname;} Set{Cachemanager._sqldepname =value;} }        #endregion        #region--method--/// <summary>        ///Gets the cache object value for the current application specified CacheKey/// </summary>        /// <param name= "Cachekety" >index key value</param>        /// <returns>return Object</returns>         Public StaticObject GetCache (String cacheKey) {if(!String.IsNullOrEmpty (CacheKey)) {Cache Objcache=Httpruntime.cache; returnObjcache[cachekey]; }            Else            {                return NULL; }        }        /// <summary>        ///Gets the cache object value for the current application specified CacheKey/// </summary>        /// <typeparam name= "T" >Object Type</typeparam>        /// <param name= "CacheKey" >index key value</param>        /// <returns>return Object Type</returns>         Public StaticT getcache<t>(String cacheKey) {Objectobj =GetCache (CacheKey); returnobj = =NULL?default(t): (t) obj; }        /// <summary>        ///sets the cache object value for the current application to specify CacheKey/// </summary>        /// <param name= "CacheKey" >index key value</param>        /// <param name= "obj" >C</param>         Public Static voidSetcache (String cacheKey, Object obj) {Cache Objcache=Httpruntime.cache;        Objcache.insert (CacheKey, obj); }        /// <summary>        ///To Create a cache dependency/// </summary>        /// <param name= "CacheKey" ></param>        /// <param name= "obj" ></param>        /// <param name= "FileName" ></param>         Public Static voidSetcache (String cacheKey, Object obj, string fileName) {CacheDependency CDEP=NewCacheDependency (fileName); Cache Objcache=Httpruntime.cache;        Objcache.insert (CacheKey, obj, CDEP); }        /// <summary>        ///sets the cache object value for the current application to specify CacheKey/// </summary>        /// <param name= "CacheKey" >index key value</param>        /// <param name= "obj" >index key value</param>        /// <param name= "absoluteexpiration" >Absolute Expiration Time</param>        /// <param name= "slidingexpiration" >the time interval between when the inserted object was last accessed and when the object expired</param>         Public Static voidSetcache (String cacheKey, Object obj, DateTime absoluteexpiration, TimeSpan slidingexpiration) {C Ache Objcache=Httpruntime.cache; Objcache.insert (CacheKey, obj,NULL, absoluteexpiration, slidingexpiration); }        /// <summary>        ///Create cache entry expires/// </summary>        /// <param name= "CacheKey" >index key value</param>        /// <param name= "obj" >Indexed Objects</param>        /// <param name= "Expires" >Expiry Time</param>         Public Static voidSetcache (String cacheKey, Object obj, Int32 expires) {Cache Objcache=Httpruntime.cache; Objcache.insert (CacheKey, obj,NULL, Cache.noabsoluteexpiration,//never Expires            NewTimeSpan (0, Expires,0)            ); }        /// <summary>        ///setting up dependent ways to cache data/// </summary>        /// <param name= "CacheKey" ></param>        /// <param name= "obj" ></param>        /// <param name= "CDEP" ></param>         Public Static voidSetcache (String cacheKey, Object obj, CacheDependency cdep) {Cache Objcache=Httpruntime.cache; Objcache.insert (CacheKey, obj, CDEP, Cache.noabsoluteexpirati On,//never ExpiresCache.noslidingexpiration,//Disable Adjustable expirationCacheitempriority.default,NULL                ); }        //========== Call mode start===============//file Dependent usage Instructions//System.Web.Caching.CacheDependency dep = new System.Web.Caching.CacheDependency ("C:\\Test.txt"); //Setcache (CacheKey, Objmodel, DEP);//Write Cache//        //Database Dependency Usage Instructions//System.Web.Caching.SqlCacheDependency dep = new System.Web.Caching.SqlCacheDependency ("Codematic", "p_product")        ; //Setcache (CacheKey, Objmodel, DEP);//Write Cache//        //========== Call mode end===============        #endregion    }}

Invocation mode

        //set the cached key valueCachemanager.cachekey ="navmenue"; //gets the cached data under the current key valueObject Cachemodel =Cachemanager.getcache (Cachemanager.cachekey); //if the current key-value object does not exist in the cache            if(Cachemodel = =NULL)            {                //storing data in the cacheCachemodel =bsnmanage.obj_list (navposition); if(Cachemodel! =NULL)                {                    //Dependent database sc_navigation table changes to updateSqlCacheDependency SCDEP =NewSqlCacheDependency (Cachemanager.sqldepname,"sc_navigation"); //Write CacheCachemanager.setcache (Cachemanager.cachekey, Cachemodel, SCDEP); }                return(DataTable) Cachemodel; }            Else                return(DataTable) Cachemanager.getcache (Cachemanager.cachekey);