This feature was mentioned in the CTP, and I can see something like this in the WebDropDown for 2009.1, but did it make it into the WebDataGrid as well?
Hi,
For WebDropDown , LoadOnDemand is basically identical to the WebDataGrid's Virtual Scrolling, which is CTP.
Lazy loading is a general concept that can be interpreted in two ways i guess:
1) load on demand and paging
2) in WebDropDown - not having initially loaded items at all, and on some event - such as opening the DropDown, making an AJAX request to fetch the initial items list itself. The WebDropDown control supports this, i think it makes sense for controls that don't have their items initially vizible on the client.
I hope this helps,
Angel