You need to configure your ListView to use local data virtualization. First of all you need to include the virtualViewSize property of the ListView and remove the pageSize property set on the dataSource. Please check the following example, showing how to configure and use local data virtualization:
I hope this information will help, but if you have any further questions, please do not hesitate to contact us.
Join us on our journey to create the world's most complete HTML 5 UI Framework - download Kendo UI