在 ASP.net FileUpload Control 中上传后如何删除文件

Question

string savePath = Server.MapPath("\\Upload_File\\");
// Get the name of the file to upload.
string fileName = email_attach.FileName;
string pathToCheck = savePath + fileName;


email_attach.SaveAs(pathToCheck);

string file = pathToCheck;
Attachment data = new Attachment(file);
mail.Attachments.Add(data);

SmtpServer.Port = 587;
SmtpServer.Credentials = new System.Net.NetworkCredential("username", "password");
SmtpServer.EnableSsl = true;
SmtpServer.Send(mail);
email_attach.Dispose();
FileInfo file_Delete = new FileInfo(pathToCheck);
if (file_Delete.Exists)
{
    file_Delete.GetAccessControl();
    file_Delete.Delete();
}

当我这样做时，它会抛出异常

在 mscorlib.dll 中发生了“System.IO.IOException”类型的异常，但未在用户代码中处理

附加信息：该进程无法访问文件“C:\Users\User\Documents\Visual Studio 2013\WebSites\Email_Sent_Web\Upload_File\DMP.edx”，因为它正被另一个进程使用。

我如何解决请帮助，谢谢提前

Answer 1

尝试在mail.Attachments.Add(data);下方写data.Dispose();