I'm trying to upload images (byte arrays) from the client to a database - this works like a charm.
The thing is, I'd like to show the progress of this operation to the user, but the DomainDataSource object doesn't provide any sort of progress-event.
If I call SubmitChanges for each entity it somehow starts to overlap and things get pretty messy, so the following doesn't work.
foreach(T entity in entities)
{
myDomainDataSource.DataView.Add(entity);
myDomainDataSource.SubmitChanges();
}
Anyone got an idea how to show the user the upload progress of those images?
You'll need to upload your images in chunks... which you often need to do anyway, as a single image may run the request limit for the maximum request size.
Once you use a chunked uploading approach, then you can show progress based on how much of the image has been uploaded.
I demonstrated this at TechEd Australia... while this was in 2007, and the code is old, it should largely work, or serve as a starting point. The sample demonstrated how you can use Silverlight to augment ajax to do a multi-file upload. See http://www.nikhilk.net/Entry.aspx?id=169 for a description of the samples. Maybe it helps...