Michael,

 

You do not need take care the temp files.

 

Temp file means the uploaded data & info of a file. it's owned by uploader , not your application.

 

You do not need care what's the filename and why the name ends with '.resx'

 

What you need to do is , in some event handler , move the file to some where you want .

 

Try to use the properties/methods of the item/args .

 

Please check the advanced sample for more.   the  Ajax-based-File-storage.aspx shall be fit for you.

 

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by the way , you need set TempDirectory every time the page loads.

 

here is the online document http://ajaxuploader.com/document/

 

Regards,
Terry