user576510 user576510 - 25 days ago 6
ASP.NET (C#) Question

after email deleting attachment file, error "The process cannot access the file because it is being used by another process."

I am doing an email form. Email has attachments and after attaching files email is sent. Next there is requirement to delete file from server. When I tried to get the file it gave me the subject error. I am even calling GC.Collect() before deleting the file but error is still there. My code for deleting file is:

private void DeleteFiles(DataTable dt)
{
GC.Collect();
String[] sAttachments = new String[dt.Rows.Count];
try
{

sAttachments = new String[dt.Rows.Count];
for (Int32 J = 0; J < dt.Rows.Count; J++)
{
sAttachments[J] = dt.Rows[J]["AttachmentExt"].ToString().Trim();
string workDir = Server.MapPath(".") + @"\upload\";
if (File.Exists(workDir + sAttachments[J]))
File.Delete(workDir + sAttachments[J]);
}
}
catch (Exception ex)
{

}


For attaching file to email my code is:

oMess.Subject = sSubject;
string workDir = System.Web.HttpContext.Current.Server.MapPath(".") + @"\upload\";
if (Attachments != null)
{
for (Int32 I = 0; I < Attachments.Length; I++)
{
oatt = new Attachment(workDir+ sAttachments[I]);
oMess.Attachments.Add(oatt);
}
}
oMess.IsBodyHtml = IsHtml;
oMess.Body = sBody;
SendMessageGmail(oMess);


Edit: My mail sending code is:

private void SendMessageGmail(MailMessage message)
{
SmtpClient client = new SmtpClient("smtp.gmail.com");
client.EnableSsl = true;
client.UseDefaultCredentials = false;
NetworkCredential loginInfo = new NetworkCredential("myid", "mypassword");
client.Credentials = loginInfo;
client.Port = 587;
client.Send(message);
}


Plz guide and help. thanks

Answer

You should try to do oatt.Dispose();

Comments