I am currently working on a Media Library module for a CMS. Reading a folder in the file system I bind the results to a RadListView that has a PageSize of n (12 at the moment) in order to display its content: images.
DirectoryInfo di =
FileSystemInfo files = di.GetFiles();
var fileByUploadedDate = files.OrderByDescending(f => f.CreationTime);
ResourceLV.DataSource = files;
In the RadDataPager I have a RadButton with the OnClick
ResourceLV.PageSize += 12;