Please have a look at this
thread which deals with uploading multiple files. To store the uploaded files in the project folder, set the desired folder name in your Project directory to the RadAsyncUpload's TargetFolder property.The
method is repeatedly called until all the valid files are uploaded on the target. Using e.File.FileName you can get the file name and you can write your own logic to feed the data in the database. Another option I have tried is you can use a RadListBox to store all the uploaded file names so that you can use it a later point such as saving in database.
sender, FileUploadedEventArgs e)
targetfolder = RadAsyncUpload1.TargetFolder;
RadListBoxItem item =
//create a RadListBoxItem and store the FileName in it.