C# XmlDocument.Save文件操作System.IO.IOException：The process cannot access the file because it is being_system.io.ioexception: the process cannot access t

作者：羊村懒王 | 2024-03-09 18:08:00

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system.io.ioexception: the process cannot access the file

实测，在文件进行读写的时候，使用xmlDocument.Save("1.txt");进行文件保存时，会出现以下异常。

System.IO.IOException:“The process cannot access the file 'C:\Users\Shine\Desktop\ConsoleApp2\ConsoleApp2\bin\Debug\netcoreapp2.1\1.txt' 
because it is being used by another process.”
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此时可以使用ReaderWriterLockSlim对文件进行保护，把xmlDocument.Save当作一个FileStream file = new FileStream("1.txt", FileMode.Open, FileAccess.ReadWrite);来看待。
如：

static void SaveXml()
        {
            Console.WriteLine(DateTime.Now.ToString() + "    " + "SaveXml");
            lockSlim.EnterWriteLock();
            try
            {
                Console.WriteLine(DateTime.Now.ToString() + "    " + "xmlDocument begin save");
                XmlDocument xmlDocument = new XmlDocument();
                xmlDocument.LoadXml(@"<note>
<to> George </to>
<from> John </from>
<heading> Reminder </heading>
<body> Don't forget the meeting!</body>
</note>");
                xmlDocument.Save("1.txt");
                Console.WriteLine(DateTime.Now.ToString() + "    " + "xmlDocument Save ok");
            }
            finally
            {
                lockSlim.ExitWriteLock();
            }
        }
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