In which Gridview Events,We change Label(inside gridview) text or fill or bind Dropdownlist(also inside gridview) at Run-Time Or Dynamically?

Row_DataBound is the the only event in which, we can change Row Contents Dynamically.It acts as a For Loop for each rows.

Row_SelectedIndexChanged -> We can fetch and assign values to any controls, once we click on any button which is inside gridview.