I am using .net 3.5 with C#. I have three drop down lists in a panel. I want to disable the second and the third drop down until a selection is made on the first. I tried the following:
disable second and third drop down lists on Page_Load. Then enable both of them in the OnSelectedIndexChanged event for the first drop down, but it does not enable them, probably because it is a client side event.
How can I accomplish this?