Hi Bharat,

Thank you for your request. 

We evaluate which features to implement based on community interest. Therefore I encourage anyone who also needs this feature to vote for its implementation.

In the meantime here is one workaround:

1. Subscribe to the Add Event of the ListBox
2. In the handler prevent the original event and iterate the dataItems that where about to be added.
3. Apply the internal _addItemAt method of the ListBox to each item. The second parameter of the method is the index at which the item is going to be added.

         function onAdd(e) {
             e.preventDefault();
             e.dataItems.forEach(dataItem=>{
                 e.sender._addItemAt(dataItem,0)
             })
         }

Regards,
Stoyan
Progress Telerik