Building the project in ASP.NET
What follows is an ASP.NET Web Forms page written in VB.NET that provides a simple UI for users to perform basic arithmetic operations on two input numbers.
The first line is a server-side directive that specifies the page language, event handling, and code-behind file for the page. The Language attribute is set to vb, which indicates that the page is written in VB.NET. The AutoEventWireup attribute is false, meaning that the event handlers for the controls on the page will be explicitly defined in the code-behind file. The CodeBehind attribute specifies the name and path of the code-behind file for the page. Finally, the Inherits attribute specifies the fully qualified name of the class in the code-behind file that provides the event-handling logic for the page.
The rest of the code is HTML markup that defines the UI elements on the page. The asp: prefix indicates that the elements are ASP.NET server controls that will be processed on the server...
