你必须创建自己的语言资源并将其链接到你的asp.net，阅读更多：创建多语言ASP.NET网站 [ ^ ]

dear reader ... i am using asp.net technology i want to develop a website in English initially . and give a button on the top of the page . and by clicking that button i want to convert whole page in to Arabic language . is it possible ? if yes . than how??

You will have to create your own language resources and link it to your asp.net, read more: Create Multi-language ASP.NET Website[^]