i want to convert HTML page into asp.net , i tried changing the extension and saving it as .aspx . It worked but most of the options didnt work apart from images like
submenus, links and other things

so i want to know how to fully convert an html page to aspx working page

Please specify the steps

The simplest way would be to create a new .aspx page in your project and copy the HTML into the markup of the .aspx page. Simply renaming the HTML file to aspx wouldn't work because the .aspx file is really like 3 files in one. You have your .aspx, .aspx.[language], and .aspx.designer.[language].

1.create a new website in asp.net.
2.copy the contents of html page design and paste it in the design part of the aspx page.
3.execute and run.. it is now aspx page