TkApi.TkRestCache.GetMarket_ExtQuotes C# (CSharp) Method

		public override MarketExtQuotes GetMarket_ExtQuotes(string symbol) {
			TkCacheData cache = null;
			foreach (TkCacheData c in _marketExtQuotes) {
				if (c.Key == symbol) {
					cache = c;
					break;
				}
			}
			// Add if not found
			if (cache == null) {
				cache = new TkCacheData();
				cache.Key = symbol;
				_marketExtQuotes.Add(cache);
			}
			
			TimeSpan ts = DateTime.Now - cache.AccessTime;
			if (ts.TotalMilliseconds > CacheTimeout) {
				RetryFunc(() => cache.Data = base.GetMarket_ExtQuotes(symbol), RetryCount, RetryDelay);
				cache.AccessTime = DateTime.Now;
			}
			return (MarketExtQuotes)cache.Data;
		}