Cannot access closed file .When saving the file

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Hi
i am using jquery file upload plugin to upload file. so whenever one upload's a file
i store that file in the session
after storing the file in the session then i am retrieving the files from the session
and storing it .When i try to save file which is more than 10 mb i get this error
"Cannot access closed file"

Here is my c# code
file.SaveAs(Path.Combine(HttpContext.Current.Server.MapPath("~/" + FolderName + "/"), strfilename));

In web config i have done this settings

HTML

<httpRuntime requestLengthDiskThreshold="15360" maxRequestLength="2147483647" useFullyQualifiedRedirectUrl="false"/>

XML

<security>
      <requestFiltering>
        <requestLimits maxAllowedContentLength="4294967295" />
      </requestFiltering>
    </security>

Can any one let me know where i am going wrong.

Posted 1-Oct-15 4:32am

surajemo

Updated 1-Oct-15 4:34am

v3

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Comments

John C Rayan 1-Oct-15 11:13am

Are you storing the file content or temporary file path in the session? Try to write the file into a temporary location and then store it into the actual location and see if it solves the issue. What's you execution timeout in web.config?

surajemo 3-Oct-15 9:07am

execution timeout(httpRuntime) in the web config is 90.
I am storing the file(which we retrieve when write HttpPostedFileBase file = Request.Files[0];) in the session and not the path.

Richard Deeming 1-Oct-15 12:04pm

Don't try to store the file contents in the session. Just save the uploaded file directly to the folder.

surajemo 3-Oct-15 9:07am

If nothing works out i have to do that :)

Sreekanth Mothukuru 1-Oct-15 16:49pm

The file will be posted once to the server.IMO Either store the file in session as memory stream or to the temp location before saving it to DB or file server.

IMO Storing file content as memory stream in a session is not recommended.

Nathan Minier 2-Oct-15 7:47am

You're more generous that I am; I would call it crazy.

Sreekanth Mothukuru 2-Oct-15 11:04am

Earlier in my career I saw code in which posted image file content was stored in session as memory stream to generate thumbnails. I know it is crazy idea but as long as we clear the session data.. it is not an issue. Saving its url in session will never work.

surajemo 3-Oct-15 9:08am

ok .But i am storing the file in the session like this firstly i am getting the file as show below
HttpPostedFileBase file = Request.Files[0];
then after getting the file i am putting the file in the session like this
session["xyz"]=file
after ward i am retreving the file from the session and storing it for big file i am getting this error for small i am not getting error y so

John C Rayan 5-Oct-15 4:22am

Can you check the event viewer to see if any system error. My bet is on either memory exception or execution timeout. Increase execution timeout in config if it is timeout issue.

Sreekanth Mothukuru 5-Oct-15 21:19pm

Instead of storing the posted file as HttpPostedFileBase store its content as byte array or steam. This could help.

surajemo 14-Oct-15 10:41am

Now i am not storing the file in session. now i am storing the file in temporary folder and then moving the file from temp folder to orginal folder

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