I am working with a custom upload control which is working alright except that when I take my file and save it, the name is changing. That wouldn't matter only I don't know how it is being changed, so I can't save the correct filename as part of my record.

I can see that spaces are being replaced by "-" but of course I don't know what other changes are likely to occur and looking through the source for PhysicalFileSystem ( which I assume is where the file operations are performed? ) I can't see anything that is performing the name change.

My code looks like this:

 MediaFileSystem system = FileSystemProviderManager.Current.GetFileSystemProvider<MediaFileSystem>();
 tempPath = String.Format("temp/{0}", UploadBox.FileName);
 system.AddFile(tempPath, UploadBox.FileContent, true);

The problem is that if my tempPath there is temp/ABC 123 DEF.pdf the file that the provider is creating will be called temp/abc-123-def.pdf. All I need to know is whether there is a method I can call to make sure that the record I am storing reflects the actual path that is created or - if there isn't - what changes are made during file path sanitisation.

Also I am aware that it would be conventional to create media items for this, but these files aren't media items from a structural perspective - in fact they get moved out of Umbraco's reach as part of this process - so I don't think in this case that would be a good approach.