Question

I need to invoke a server side function when an item is picked in an ASP drop-down box.
Can someone please tell me how to do that?

Answer 1

Within ASP.NET use the drop down selected index change event. Alternatively for a client side event you could use JQuery and then use the following JavaScript function to contact the Server:

function CallServer() {
    $.ajax({
        url: 'webserviceURL',
        type: "POST",
        datatype: "json",
        success: function (result) {
            if (result.Success) {

            } else {

            }
        }
    });
}