I have to add items in table and also in listbox

Hi,

I have a scenario in which a web form contain ListBox, dropdownList, TextBox, table1 control. I have to add items in table and also in listbox, dropdownlist through text box.

When I compile it flash no error but when i execute this one it flashes a runtime error as

Error Message:cs0234

type or namespace name 'global' does not exists in the class or name system.web.ui.webcontrols.Listbox (are you missing an assembly reference?)
source Error:Line28: public class global.asax:listbox.global

It simply means there is some runtime error in the code. At runtime your code refers to somthing which does not exist / not referenced .