问题.NET的Web服务写入单个文件 [英] Issue writing to single file in Web service in .NET

问题描述

我已经创造了.NET 2.0 Web服务，C＃。我需要记录一些信息，以每当一个不同的方法由Web服务客户端调用的文件。

I have created a webservice in .net 2.0, C#. I need to log some information to a file whenever different methods are called by the web service clients.

当一个用户进程写入文件，另一个进程试图写它的问题就来了。我收到以下错误：

The problem comes when one user process is writing to a file and another process tries to write to it. I get the following error:

，因为它正由另一个进程的进程无法访问该文件。

The process cannot access the file because it is being used by another process.

这是我曾尝试在C＃中实施和失败的解决方案如下。

The solutions that I have tried to implement in C# and failed are as below.

1. 实现单例类包含code写入到文件中。


2. 用于lock语句包住code写入到文件中。


3. 我也曾尝试使用开源记录log4net的，但它也并不是一个完美的解决方案。


4. 我知道记录到系统事件记录器，但我没有这样的选择。

我想知道是否存在一个完美的，完整的解决方案，以这样的问题？

I want to know if there exists a perfect and complete solution to such a problem?

推荐答案

锁定可能是失败，因为您的Web服务是由多个工作进程中运行。
你可以保护一个命名的互斥体，这是跨进程的共享访问，不像你使用锁（someobject）{...}获得锁：

The locking is probably failing because your webservice is being run by more than one worker process. You could protect the access with a named mutex, which is shared across processes, unlike the locks you get by using lock(someobject) {...}:

Mutex lock = new Mutex("mymutex", false);

lock.WaitOne();

// access file

lock.ReleaseMutex();

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