public void DataCacheItemCallBackHandler(string cacheName, string regionName, string key, DataCacheItemVersion version, DataCacheOperations cacheOperation, DataCacheNotificationDescriptor nd) { try { string result = string.Format("Time: {0} CacheName: {1} Region {2} Key: {3} DataCacheOperation: {4}", DateTime.Now.ToLongTimeString(), cacheName, regionName, key, cacheOperation.ToString()); rtbMontiorCache.Invoke((MethodInvoker) delegate { rtbMontiorCache.AppendText("\r\n" + result); }); } catch (Exception ex) { HandleException(ex); } }