Error Cannot Access A Closed File
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Cannot Access A Closed File Itextsharp
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System.objectdisposedexception Cannot Access A Closed File
up vote 4 down vote favorite I have a asp.net FileUpload control. I can successfully upload file to store in session, but when I am tring to get its inputstream (I'm store file in HttpPosterFile) I'm getting error Cannot access a closed file c# asp.net file-upload httppostedfile share|improve this question edited Dec 9 '13 at 10:19 Kurubaran 5,50141646 asked Dec 9 '13 at 10:15 Jaztingo 190112 3 Would cannot access a closed file mvc it not be better to just store the byte array of file data in session rather than the HttpPostedFile with the stream? –Paddy Dec 9 '13 at 10:19 add a comment| 2 Answers 2 active oldest votes up vote 11 down vote accepted add this to your web.config file
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Httppostedfilebase Cannot Access A Closed File
8 replies Last post Jan 17, 2011 06:21 AM by Master81 requestlengthdiskthreshold ‹ Previous Thread|Next Thread › Print Share Twitter Facebook Email Shortcuts Active Threads Unanswered Threads Unresolved requestlengthdiskthreshold maxrequestlength Threads Support Options Advanced Search Related Links GuidanceSamplesVideos Reply Shailu@Asp Member 1 Points 25 Posts Cannot access a closed file Mar 17, 2009 07:29 AM|Shailu@Asp|LINK Hi All, http://stackoverflow.com/questions/20468005/getting-cannot-access-a-closed-file-errormessage-when-getting-file-from-sessio When im trying to Upload files in asp.net, i am getting following exception. "System.ObjectDisposedException: Cannot access a closed file" This is working fine when i upload small documents(<100kb), but iwant toupload>10MB documents. and one more thing... it worked fine at the development environment. When i debug i could upload 10Mb documents also. After deploying http://forums.asp.net/t/1397944.aspx?+Cannot+access+a+closed+file it to IIS, when i access the site from the deployed Url... i am facing this problem. For this i have mentioned the RequestLength in web.config as...
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you may wonder same code after migrating from asp.net1.1 to asp.net2.0 starts throwing this error.As I said,new memory management feature is partily reposible because you may not get this error if you are uploading the file directly without any redirection(due to business requirement) for exp. - storing uploaded file object in the session on file upload page and saving it after user confirmation on the confirmation page.Most likly you will get this error in the senario I mentioned as an example above subjected to the file size is more than 80Kb. The reason is,according to new memory management feature of asp.net2.0 when you upload a file the input stream is buffered in the memory if its size less than 80Kb otherwise it is stored in the temporary locations on the disk upto 4096Kb so when you maintain an object of any uplaoded file(more than 80Kb size) in session and redirect on different page the current request is disposed and the disk file associated with it is closed as well, now when you try to save uploaded file object on server(using SaveAs method of upload control) from the session, the request processing thread tries to read from the closed file object and thats where you get this error message.But if your uploaded file size is much less than 80Kb then you may not face this error.Solution:You can solve this issue by adding following tag in the web.config file of your website.< httpRuntime maxRequestLength="10240" requestLengthDiskThreshold="4096"/ >Note - change the values according to your requirement.maxRequestLength - Specifies the total limit for the input stream buffering threshold, in KB. This limit can be used to prevent denial of service attacks that are caused, for example, by users posting large files to the server. The default is 4096 KB. If the threshold is exceeded, a ConfigurationErrorsException error is thrown. requestLengthDiskThreshold- Specifies the limit for the input stream buffering threshold, in kilobytes, it means if size of