C# 我试图用不同的方法访问同一个日志文件，但遇到了错误

我试图创建一个日志文件，并写入该文件，我使用不同的方法使用同一个文件，我得到一个错误。如果我做错了，请纠正我

foreach (var corporationObj in corporations)
{
    // Log which corporation it is currenlty doing
    _keepItDry.Log("Started Data Summarisation for corporation: @" + corporationObj.Description, w);
    // Pass the coporationId and call method to DoProductStatsForCorporation and also pass the log file to continue our logging.
    w.Flush();
    // w.Close();
    w.Dispose();

    DoProductStatsForCorporation(corporationObj.Id, path);
}

下面是循环中调用的方法的列表：

private void DoProductStatsForCorporation(int corporationId, string logFilePath)
{
    var corporationManufacturerRepository = new CorporationManufacturerRepository();
    var manufacturerRepository = new ManufacturerRepository();
    // Get brand sfor the coporationId passes
    var corporationManufacturers  = corporationManufacturerRepository.GetAllManufacturersForCorporation(corporationId);
    //check before process is used by another object
    var fileInfo = new FileInfo(logFilePath);
    IsFileLocked(fileInfo);
    using (StreamWriter w = File.AppendText(logFilePath))
    {
        // If brands are existing for the corporation proceed.
        if (corporationManufacturers.Any())
        {
            // loop through each brand to processs
            foreach (var corporationManufacturer in corporationManufacturers)
            {
#region ProductStats
                // get the manufacturer row so that we can know more details about the manufacturer
                var manufacturer =  manufacturerRepository.GetManufacturer(corporationManufacturer.ManufacturerId);
                // Get the countries for the manufacturer

                _keepItDry.Log("Started Doing data summarisation for Brand: @ " + manufacturer.Description, w);
                // this is common method so extracted to reuse it.
                // we need to clos ethe file as we are sending to another function.
                w.Flush();
                w.Dispose();

                DoProductStatsForBrand(manufacturer, logFilePath);

#endregion ProductStats

                _keepItDry.AddTolistBox(DateTime.Now.ToLongDateString() + " " + DateTime.Now.ToLongTimeString() + ": Ended Summarizing data for " + manufacturer.Description, _listBoxLog);
            }
        }
        else
        {
            _keepItDry.Log(" No Brands are there for the selected Corporation Please check if Brands are mapped for this Corporation ? : @ ", w);
            _keepItDry.AddTolistBox(DateTime.Now.ToLongDateString() + " " + DateTime.Now.ToLongTimeString() + "  : No Brands are there for the selected Corporation Please check if Brands are mapped for this Corporation ", _listBoxLog);
        }

        //  w.Flush();
        // w.Dispose();
    }    
    //  GC.Collect();
}

来取下一个公司Id后，我得到的是“当前文件已关闭”。

首先是

using (StreamWriter w ...

w.Flush();
w.Dispose();

那么你的内心有

`foreach`  loop

里面你有

using (StreamWriter w ...

w.Flush();
w.Dispose();

你刚刚处理了你的物体-它将如何工作？ 如果您有2个公司制造商，您将执行一个循环，然后出现错误

---

使用

是您的处理机制。您只需要在内部添加一个标志来验证块是否完成良好。

您可以使用

StreamWriter

来编写文件。 写入文件后，请处理该文件

streamWriter.Flush();
streamWriter.Close();

---

Close（）

也调用

Dispose（）

方法。

您收到了什么异常？@M.Babcock进程无法访问文件“d:\DataSummarisationLogfiles\2013-09-17\DataSummarisation2013-09-17 01-41-52-AM”，因为它正被另一个进程使用。如果我这样做，则关闭（）然后，当涉及到第二个循环时，我发现它说无法向封闭的TextWriter写入。问题可能是文件没有被打开以进行共享写入，但您的代码有点混乱，无法确定。