Recently I ran into an issue, that by the looks of Google, is affecting many others too. I wanted to be able to allow users to select an upload path, using the standard Asp.Net fileUpload control, and maintain that control's path through postbacks, so I could perform some server side validation. As far as I can [...]
Quick post for those who may be suffering from a "Cannot Access A Closed File" exception when attempting to upload/save larger files with the AjaxControlToolkit AsyncFileUpload control... Fix for me: Add/edit an entry in your app's web.config <httpRuntime requestLengthDiskThreshold="15360" /> In my case this was caused by having a requestLengthDiskThreshold set too low, and was causing [...]