在HostFileChangeMonitor初始化到目录的情况下使用MemoryCache会得到ArgumentOutOfRangeException [英] Using MemoryCache with HostFileChangeMonitor init to a directory gets ArgumentOutOfRangeException

问题描述

我正在使用.NET 4的System.Runtime.Caching中的MemoryCache，并且希望在目录更改时使缓存条目无效.

I am using MemoryCache from System.Runtime.Caching of .NET 4 and I wish to invalidate the cache entry when a directory changes.

HostFileChangeMonitor应该可以处理文件和目录，所以我要这样添加它:

HostFileChangeMonitor is supposed to handle both files and directories so I am adding it like so:

var cacheItemPolicy = new CacheItemPolicy { SlidingExpiration = TimeSpan.FromMinutes(30) };
cacheItemPolicy.ChangeMonitors.Add(new HostFileChangeMonitor(new List<string> { folder }));

但是我得到一个例外:

System.ArgumentOutOfRangeException: The UTC time represented when the offset is applied must be between year 0 and 10,000.

仅当我在ASP.NET网站中使用代码时，才会发生这种情况.从控制台应用程序内部可以正常工作.

This only happens if I use the code in a ASP.NET website. It works fine from inside a console application.

我发现

I have found this on ms connect, but the directory I am adding to the HostFileChangeMonitor exists.

感谢您的帮助.

推荐答案

要回答我自己的问题:
将目录添加到HostFileChangeMonitor时，似乎4.0存在一个错误.

To answer my own question:
it seems that 4.0 has a bug when adding Directories to the HostFileChangeMonitor.

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