In my Visual Studio 2010 ASP.NET project, I have a page containing RadFileExplorer (Telerik WebUI VSExtensions 2011.03.1305.0). We use AsyncUpload to copy any file type (BMP, DOC, EXE, GIF, etc.) to FileExplorer. You can browse to the webpage that has the FileExplorer and use the page as a repository for all kinds of files.
After a period of time (one day, week, month, year, or more), the files will be purged from FileExplorer. The purging or deleting of files from FileExplorer is primarily done by selecting one or more files, right-clicking on the selected files, and clicking "Delete" on the shortcut menu (an option that FileExplorer provides by default).
All uploaded files are stored in the same folder every time and the users have no problems uploading files to FileExplorer. But occassionally (not every time), when you try to delete a file from FileExplorer, the following error can occur:
Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException:
The process cannot access the file 'C:\Users\Public\Projects\Portal\Root\<filename>.<ext>' because it is being used by another process.
If this occurs while performing some tests within Visual Stuio, the following JavaScript is displayed:
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When this problem occurs, it is always with the same file types; EXE and MSI files types. Most of the time, FileExplorer will let us delete EXE or MSI files, but occasionally it will not. It does not matter if the file has been listed in FileExplorer for 1 day or 1 year; once you get the above error, you cannot delete the file. You have to find someone who can access the website using Windows Explorer and have them go to the folder where the file is stored, and delete the file.
Is there something that I can change within my Visual Studio project (or IIS website) that will prevent this intermittent problem?
Thank you,
Steven
2 Answers, 1 is accepted
Rank 1
That is the expected behavior of the FileExplorer control. As I can see from the error message above, the deletion of the file could not been processed, because the file is used by another program/process:
"The process cannot access the file 'C:\Users\Public\Projects\Portal\Root\<filename>.<ext>' because it is being used by another process."
Unfortunately this is a limitation that is not related to the control and cannot be controlled by it.
Kind Regards,
Vesi
the Telerik team