I am Working on RadGrid with FormTemplate as Popup,Once clicked on Edit record of radGrid
popup is shown,This Popup contain dropDownlist on selected index of this dropdownlist i need to
Try the following method to achieve your requirement. In ItemCreated event access the DropDownList(which is in edit mode) and attach an 'onchange' event to DropDownList. Then pass the Client ID of the control(which you want to disable) to the client
side event handler. In that client function you can access the control
using this Client ID and disable it.