Hi Maaz,
You can use the following function to register for rowselection in i5Grid.
function funcToBeCalledOnRowSelect() {
alert("Row selected!!");
}
var g = new com.sap.xmii.grid.init.i5Grid(....);
g.registerRowSelectionEventHandler(funcToBeCalledOnRowSelect);
For this event to get triggered, Allow Selection should be true and Allow Cell Selection should be configured as false for the i5Grid.
Do let me know if you still face issues.
Regards,
Ria