How to delete temporary file

[Ross Barbieri]

Suppose a file is uploaded, placed in the temporary folder, the page posts back, but then an error or something occurs before calling 

UploadedFile.SaveAs().

 
In that case, the temporary file is not deleted, and over similar repeated events, those files will accumulate on disk.  Is there any way to manually cause the temporary file to be deleted?

Thanks.

[Genady Sergeev]

Hi Ross Barbieri,

Actually the iploaded temp file is going to be deleted. It is saved in the temporary folder using Cache Dependency. The temp files are by default deleted after 4 hours. This period can be increased or decreased using the TemporaryFileExpiration property of RadAsyncUpload. For example, you can set it to 5 minutes, manually throw an error into your web app and then observe how the temp file is automatically deleted after 5 minutes.

Regards,
Genady Sergeev
the Telerik team

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[Lenny_shp]

On a postback if I perform SaveAs in FileUploaded event is the temporary file automatically deleted on the spot?
Or does it always wait by its expiration setting?

[Tojara]

With the latest internal build in mind (2010.2.22) the temporary files are deleted when SaveAs is called on uploaded file. I've personally checked that.

[William]

So if the temporary files are automatically deleted upon calling "SaveAs", what happens to them when the bytes are read via the Input Stream?  We never call .SaveAs because our files are saved in SQL Server rather than the file system.  Is there some other way to manually delete the temporary files?

[Genady Sergeev]

Hello William,

They are automatically delete after staying for 4 hours in the temporary folder. You can control the expiration time using the TemporaryFolderExpiration property.

Greetings,
Genady Sergeev
the Telerik team

[Albert Shenker]

I have a question along these lines. I have several applications which use RadAsyncUpload. I have set a single centralized tempfolder. Everything works fine, but my question is... if I set various TemporaryFileExpiration settings for the various asyncupload controls, I assume the temp files created in these uploads will delete according to the fielexpirations I set. In other words, they won't all be deleted at the same time. Is this correct?

[Peter Filipov]

Hi Albert,

You are correct. Every of the uploaded files in the temporary folder is associated with the expiration time of its control.

Kind regards,
Peter Filipov
the Telerik team

[miksh]

It would be nice if you find time to add an article explaining it into radAsyncUpload documentation.

[Plamen]

Hi,

 
Thank you for your recommendations. We will add this explanations to the documentation as soon as possible.

All the best,
Plamen
the Telerik team

[miksh]

+1 for article explaining temp files removal as it is very confusing.