[C#中的FileStream]为什么每次想访问一个文件,都提示被另外的线程占用?

bianxinhuan 2013-09-10 11:48:01

我如下这样写,每次都会抛出被占用的异常,其实这个文件只有我自己的这个方法访问,用来记录日志的,不定时会写入记录.也尝试过不用using的方式,把流close()和dispose().有解决办法吗,各位前辈!

 using (FileStream missedXmlStream = new FileStream(missedPath, FileMode.Open, FileAccess.Write, FileShare.ReadWrite))

            {

                XDocument missedXml = XDocument.Load(missedPath);

                var root = missedXml.Root;

                var secondNode = root.Element(type);

                var page = new XElement("page", new XAttribute("category", category), new XAttribute("Url", url));

                secondNode.Add(page);

                missedXml.Save(missedXmlStream);

                missedXmlStream.Flush();

            }

真的,关于IO,多线程这些操作真的充满无力感,是因为我不明白它内部原理吗?

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silwol 2013-09-25

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这样试试？

                XDocument missedXml = XDocument.Load(missedPath);
                var root = missedXml.Root;
                var secondNode = root.Element(type);
                var page = new XElement("page", new XAttribute("category", category), new XAttribute("Url", url));
                secondNode.Add(page);
 using (FileStream missedXmlStream = new FileStream(missedPath, FileMode.Open, FileAccess.Write, FileShare.ReadWrite))
            {
                missedXml.Save(missedXmlStream);
                missedXmlStream.Flush();
            }