求助文件占用的问题

[ajdkjalj]

public static string Analyz_BTB(string filePath)
        {
            IsFileOccupied(filePath);
            StringBuilder strbuilder = new StringBuilder();
            strbuilder.Append("<?xml version=\"1.0\" encoding=\"utf-8\"?> \n\r <Root> \n\r");
            FileStream fs = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
            StreamReader sr = new StreamReader(fs, Encoding.Default);
            String line;
            while ((line = sr.ReadLine()) != null)
            {
                strbuilder.Append(line);
            }
            strbuilder.Append("</Root>");
            
            TextReader textReader = new StringReader(strbuilder.ToString());
            XDocument doc = XDocument.Load(textReader);
            XElement lastEle = doc.Descendants("ItemAlignmentData").Last();
            //var AlignmentFids = lastEle.Element("AlignmentFidList").Elements("AlignmentFid");
            var StretchFids = lastEle.Element("StretchFidList").Elements("StretchFid");
            strbuilder.Clear();
            foreach (var item in StretchFids)
            {
                BTB btb = new BTB();
                btb.dateTime = lastEle.Attribute("dateTime").Value;
                btb.boardFidName = item.Attribute("boardFidName").Value;
                btb.stencilFidName = item.Attribute("stencilFidName").Value;
                btb.locationX = item.Attribute("locationX").Value;
                btb.locationY = item.Attribute("locationY").Value;
                btb.stretchX = item.Attribute("stretchX").Value;
                btb.stretchY = item.Attribute("stretchY").Value;
                strbuilder.Append(JsonConvert.SerializeObject(btb));
            }
            sr.Close();
            sr.Dispose();
            fs.Close();
            fs.Dispose();

            GC.Collect();
            return strbuilder.ToString();
        }

/// <summary>
        /// 查看文件是否被占用
        /// </summary>
        /// <param name="filePath"></param>
        /// <returns></returns>
        public static bool IsFileOccupied(string filePath)
        {
            IntPtr vHandle = _lopen(filePath, OF_READWRITE | OF_SHARE_DENY_NONE);
            CloseHandle(vHandle);
            return vHandle == HFILE_ERROR ? true : false;
        }

在用FileStream 读文档时前两次没问题，再读就开始报正由另一进程使用，因此无法访问的问题，加了GC，也加了IsFileOccupied方法关占用，都没有解决，求助

[SMYZRJY]

是否是多线程访问，加个Lock锁看看

[ajdkjalj]

对了，我是用了FileSystemWatcher监控文件了的，操作就是复制文件覆盖触发，然后读取，关键是打断点就好了，取消断点又提示占用，就搞的我很郁闷

[奇点码农]

多线程运行时序可能引起这个问题锁一下试试

[ajdkjalj]

使用微软的handle.exe解决了