单项选择题 You are implementing a read-only page that includes the following controls. You disable view state to improve performance. You need to ensure that the page is updated to display the latest data when the user clicks the refresh button. Which code segment should you use?（）

单项选择题 YouareimplementinganASP.NETpageinane-commerceapplication.CodeinabtnAddToCart_Clickeventhandleraddsaproducttotheshoppingcart.Thepageshouldcheckthestatusoftheshoppingcartandalwaysshowacarticonwhenoneormoreitemsareintheshoppingcart.Thepageshouldhidetheiconwhentheshoppingcarthasnoitems.Youneedtoaddaneventhandlertoimplementthisrequirement.Whicheventhandlershouldyouadd？（）

单项选择题 YouareimplementinganASP.NETWebsitethatwillbeaccessedbyaninternationalaudience.Thesitecontainsglobalandlocalresourcesfordisplayelementsthatmustbetranslatedintothelanguagethatisselectedbytheuser.YouneedtoensurethattheLabelcontrolnamedlblCompanydisplaystextintheuser’sselectedlanguagefromtheglobalresourcefile.Whichcontrolmarkupshouldyouuse？（）