Do you using asp.net dropdown or html dropdown? If you are using asp.net dropdown then dropdownname.selectedValue If you are using html dropdown then you need to set value in any server side control on dropdown change and access that as you are access that control.
YourDropDown.selectedValue
YourDropDown.SelectedItem.Text
string strSelectedValue=DropDown.selectedValue.ToString();
var
This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)