Problem in sending the mail using C#

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HI ALL,

i am sending the email using SMTP and adding the attachements to the email from file upload control and sending the attachements with mail,but for the first time if i am sending the file through email the mail is going correctly but after sending the mail, for the secoind time if i am adding the same file through file upload control i am getting theerror
"The process cannot access the file 'D:\Program Files\Express\Temp\SupportAttachments\support.txt' because it is being used by another process.
"

I am uploading the files from upload control to grid an dfrom grid picking the files and attaching to the mail..

here is my code:

C#

foreach (GridViewRow gvrow in grdfiledetails.Rows)
            {
                Label lbl = (Label)gvrow.FindControl("lblfilename");
                string SupportAttachmentFilePath = "D:\\Program Files\\Duck Creek Technologies\\Express\\Temp\\SupportAttachments";
                SupportAttachmentFilePath += "\\" + lbl.Text;
                string BasePathValue = lbl.Text;
                 firstAttachment = new Attachment(SupportAttachmentFilePath);
                firstAttachment = new Attachment(SupportAttachmentFilePath, MediaTypeNames.Application.Octet);
                mail.Attachments.Add(firstAttachment);
                //attach1 = BasePathValue;
                //firstAttachment.Dispose();
            }

            try
            {
                SmtpServer.Send(mail);}<pre lang="c#">

Please help what to do

Posted 7-Apr-14 1:23am

spanner21

Updated 7-Apr-14 2:19am

v2

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[no name] 7-Apr-14 7:25am

Well obviously, shutdown the process that is using that file before trying to use it.

Ajay_Babu 7-Apr-14 7:25am

show me the code

spanner21 7-Apr-14 8:12am

i am adding all the files to a grid and then sending the mail by picking the files from grid
foreach (GridViewRow gvrow in grdfiledetails.Rows)
{
Label lbl = (Label)gvrow.FindControl("lblfilename");
string SupportAttachmentFilePath = "D:\\Program Files\\Duck Creek Technologies\\Express\\Temp\\SupportAttachments";
SupportAttachmentFilePath += "\\" + lbl.Text;
string BasePathValue = lbl.Text;
firstAttachment = new Attachment(SupportAttachmentFilePath);
firstAttachment = new Attachment(SupportAttachmentFilePath, MediaTypeNames.Application.Octet);
mail.Attachments.Add(firstAttachment);
//attach1 = BasePathValue;
//firstAttachment.Dispose();
}

try
{
SmtpServer.Send(mail);
}

its my code

Murugesan22 7-Apr-14 10:42am

set file path outside of forloop

spanner21 7-Apr-14 10:57am

not getting...Could you please elaborate

2 solutions

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nandakishoreroyal · Answer 1 · 2014-04-07T01:27:00

Solution 1

Previous process has not been yet completed, thats y it is getting error,

it takes time to end the process

r else after sending email you end the process from code.

it may helps you...

Posted 7-Apr-14 1:27am

nandakishoreroyal

Bernhard Hiller · Answer 2 · 2014-04-07T02:30:00

Solution 3

The variable firstAttachment is declared outside the foreach loop - change that, declare it inside. Next, create the attachment only once; also make sure there are no duplicates (two attachments with the same filename)!

Posted 7-Apr-14 2:30am

Bernhard Hiller

Comments

spanner21 7-Apr-14 8:44am

1)I made sure there will be no duplicate attachements
2)firstAttachment is declared inside the foreach loop
3)made the attachment only once.

now the code is as shown:

foreach (GridViewRow gvrow in grdfiledetails.Rows)
{
Attachment firstAttachment;
Label lbl = (Label)gvrow.FindControl("lblfilename");
string SupportAttachmentFilePath = "D:\\Program Files\\Duck Creek Technologies\\Express\\Temp\\SupportAttachments";
SupportAttachmentFilePath += "\\" + lbl.Text;
string BasePathValue = lbl.Text;
//firstAttachment = new Attachment(SupportAttachmentFilePath);

firstAttachment = new Attachment(SupportAttachmentFilePath, MediaTypeNames.Application.Octet);
mail.Attachments.Add(firstAttachment);
//attach1 = BasePathValue;
//firstAttachment.Dispose();
}

try
{
SmtpServer.Send(mail);
}

but i saw in google that dispose will work...so i tried to write it in after
SmtpServer.Send(mail);
but not able to acess the object of Attachements which is firstAttachment here..

please help..

i am stuck here...The process cannot access the file error is hammering me