What is ASP.NET?

ASP.NET is web application framework to build dynamic data driven web applications and web services. ASP.NET is a subset of .NET framework. A framework is a collection of classes. ASP.NET is the successor to classic ASP (Active Server Pages).

Creating your first ASP.NET web application :-
        Select File --> NewProject --> Visual C# tab --> Web
To view the solution explorer window:-
        view --> Solution Explorer