在邮件附件中发送后无法访问要写入的文件

Question

我有 C# console application 使用下面的代码在日志文本文件中写入它正在执行的步骤

logFilePath = logFilePath + "Log-" + System.DateTime.Today.ToString("dd-MM-yyyy") + "." + "txt";
logFileInfo = new FileInfo(logFilePath);
logDirInfo = new DirectoryInfo(logFileInfo.DirectoryName);
if (!logDirInfo.Exists) logDirInfo.Create();
if (!logFileInfo.Exists)
{
    fileStream = logFileInfo.Create();
}
else
{
    fileStream = new FileStream(logFilePath,FileMode.Append);
}
log = new StreamWriter(fileStream);
log.WriteLine("---------------" + DateTime.Now.ToString() + "--------------------------");
log.WriteLine(strLog);
log.WriteLine("---------------------------------------------------------------");
log.Close();

它工作正常，但是当发生异常时，我会将日志文本文件附加到邮件中，然后当我尝试再次调用方法时发送它，该方法在邮件与日志文本文件之后写入同一个日志文本文件附件我得到异常 IOException: 进程无法访问文件 'file path' 因为它正被另一个进程使用

我试过 FileShare Option 和其他东西都没有成功

以下代码抛出异常

client.Send(mail);

client.Dispose();

LogWriter.WriteLog("######--Re-Start of the Process at -" + Convert.ToString(DateTime.Now.ToString("dd/MM/yyyy hh:mm:ss")) + "--######"); //Exception thrown here
Console.WriteLine("######--Re-Start of the Process at -" + Convert.ToString(DateTime.Now.ToString("dd/MM/yyyy hh:mm:ss")) + "--######");
BridgePage.GetData();
Console.WriteLine("######--Re-End of the Process at -" + Convert.ToString(DateTime.Now.ToString("dd/MM/yyyy hh:mm:ss")) + "--######");
LogWriter.WriteLog("######--Re-End of the Process at -" + Convert.ToString(DateTime.Now.ToString("dd/MM/yyyy hh:mm:ss")) + "--######");

根据 Panagiotis Kanavos 使用 FileInfo.AppendText 的评论，尝试了以下代码，但仍然存在相同的异常

logFilePath = logFilePath + "Log-" + System.DateTime.Today.ToString("dd-MM-yyyy") + "." + "txt";
logFileInfo = new FileInfo(logFilePath);

if (!logFileInfo.Exists)
{
   //Create a file to write to.
   using (StreamWriter logsw = logFileInfo.CreateText())
   {
       logsw.WriteLine("---------------" + DateTime.Now.ToString() + "--------------------------");
       logsw.WriteLine(strLog);
       logsw.WriteLine("---------------------------------------------------------------");
    }
 }
 else
 {
   using (StreamWriter logsw = logFileInfo.AppendText())
    {
       logsw.WriteLine("---------------" + DateTime.Now.ToString() + "--------------------------");
       logsw.WriteLine(strLog);
       logsw.WriteLine("---------------------------------------------------------------");
    }
  }

请帮忙

Answer 1

而不是 Disposing SmtpClient 我在发送邮件后释放了 MailMessage.Attachments 的附件

if (mail.Attachments != null)
{
    for (int i = mail.Attachments.Count - 1; i >= 0; i--)
    {
       mail.Attachments[i].Dispose();
    }
     mail.Attachments.Clear();
     mail.Attachments.Dispose();
 }
 mail.Dispose();
 mail = null;

成功了

在邮件附件中发送后无法访问要写入的文件

Cannot access the File to write after sending it in Mail attachment

c#

console-application