I have a template column in grid and RadAsyncUpload control created in template's InstantiateIn method. I assign image file extensions to AllowedfileExtensions property.
_uploadControl = new RadAsyncUpload
ID = Item.user_name + "_upload"
TemporaryFolder = HostingEnvironment
AllowedFileExtensions = _allowedExtensions,
TemporaryFileExpiration = new TimeSpan
(0, 0, 30, 0)
That's what I do next:
1. Click "Select" button.
2. When open file dialog opens, there's no file mask on it.
3. I select any file and upload it.
4. Click "Remove" link
5. Open file dialog again and see the file mask is set correctly.
What should I do to fix that?