'An exception occurred during a WebClient request" while using C# ASP.NET

Question

So, I have built an auto update program to my program.

The code that is running in here is:

new WebClient().DownloadFile(\"XXXX\", checkingfolder.Select         


        

Answer 1

Beside other answers, beware that the same WebException might also occur if the client process does not have needed permission to create output file.

I would suggest you to take the following strategy:

1. Download file to a unique filename with .tmp (.txt) extensions Windows Temporary Folder to avoid write-permission and other permissions issues
2. Move temporary file to destination folder
3. Rename temporary file to destination filename

Hope it helps :-)