ConfigurationManager.AppSettings缓存 [英] ConfigurationManager.AppSettings Caching

问题描述

我们知道，IIS缓存ConfigurationManager.AppSettings，所以它读取磁盘只有一次，直到web.config中被改变。这样做是为了提高性能的目的做了。

We know that IIS caches ConfigurationManager.AppSettings so it reads the disk only once until the web.config is changed. This is done for performance purposes.

在有人

<一个href=\"http://forums.asp.net/p/1080926/1598469.aspx#1598469\">http://forums.asp.net/p/1080926/1598469.aspx#1598469

表示，.NET Framework并不是对的app.config做相同，但它从磁盘为每一个请求读取。但我觉得很难相信，因为这将是慢。请告诉我，他是错的，不然我就必须解决每个控制台/ Windows窗体/ Windows服务我写的。

stated that .NET Framework doesn't do the same for app.config, but it reads from the disk for every request. But I find it hard to believe, 'cause it would be slower. Please tell me that he is wrong or I'll have to fix every Console/Windows Forms/Windows Services I wrote.

更新我很遗憾，我misinter preTED什么人在上面的链接的论坛上说。

Update I regret that I misinterpreted what people said in the linked forum above.

推荐答案

一个快速测试，似乎表明，这些设置只装载在应用程序启动。

A quick test seems to show that these settings are only loaded at application startup.

//edit the config file now.
Console.ReadLine();

Console.WriteLine(ConfigurationManager.AppSettings["ApplicationName"].ToString());
Console.WriteLine("Press enter to redisplay");

//edit the config file again now.
Console.ReadLine();
Console.WriteLine(ConfigurationManager.AppSettings["ApplicationName"].ToString());
Console.ReadLine();

您会看到所有的输出保持不变。

You'll see that all outputs remain the same.

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