该进程无法访问该文件，因为它正被另一个进程使用（文件数量后发生错误）

Question

我发送了一些带有附件的电子邮件。每 56 封邮件都会出错。错误的详细信息是：

System.Net.Mail.SmtpException: Failure sending mail. ---> System.IO.IOException: Unable to write data to the transport connection: An established connection was aborted by the software in your host machine. ---> System.Net.Sockets.SocketException: An established connection was aborted by the software in your host machine at System.Net.Sockets.Socket.Send(Byte[] buffer, Int32 offset, Int32 size, SocketFlags socketFlags) at System.Net.Sockets.NetworkStream.Write(Byte[] buffer, Int32 offset, Int32 size) --- End of inner exception stack trace --- at System.Net.Sockets.NetworkStream.Write(Byte[] buffer, Int32 offset, Int32 size) at System.Net.DelegatedStream.Write(Byte[] buffer, Int32 offset, Int32 count) at System.Net.DelegatedStream.Write(Byte[] buffer, Int32 offset, Int32 count) at System.Net.Mime.SevenBitStream.Write(Byte[] buffer, Int32 offset, Int32 count) at System.Net.DelegatedStream.Write(Byte[] buffer, Int32 offset, Int32 count) at System.Net.DelegatedStream.Write(Byte[] buffer, Int32 offset, Int32 count) at System.Net.Mime.SevenBitStream.Write(Byte[] buffer, Int32 offset, Int32 count) at System.Net.DelegatedStream.Write(Byte[] buffer, Int32 offset, Int32 count) at System.Net.DelegatedStream.Write(Byte[] buffer, Int32 offset, Int32 count) at System.Net.Base64Stream.FlushInternal() at System.Net.Base64Stream.Write(Byte[] buffer, Int32 offset, Int32 count) at System.Net.Mime.MimePart.Send(BaseWriter writer) at System.Net.Mime.MimeMultiPart.Send(BaseWriter writer) at System.Net.Mail.Message.Send(BaseWriter writer, Boolean sendEnvelope) at System.Net.Mail.MailMessage.Send(BaseWriter writer, Boolean sendEnvelope) at System.Net.Mail.SmtpClient.Send(MailMessage message) --- End of inner exception stack trace --- at System.Net.Mail.SmtpClient.Send(MailMessage message)

我在 google 中找到了一些类似的答案，但它不起作用。有人可以帮忙吗？我正在使用无法使用 SmtpClient.Dispose() 的 .NET 3.5 这是类似的问题：

Answer 1

我终于找到了问题的答案。它非常适合为以前的 .net 处理 smtpclient。

Does system.net.mail.smptclient disconnect from the server?

这是代码

var smtp = new SmtpClient();
smtp.ServicePoint.MaxIdleTime = 1;
smtp.ServicePoint.ConnectionLimit = 1;
smtp.Send(message);

该进程无法访问该文件，因为它正被另一个进程使用（文件数量后发生错误）

The process cannot access the file because it is being used by another process (Error occur after numbers of files)

vb.net

ioexception