Now that you understand the basic organization of Visual Studio, you can begin designing a simple web page. To start, in the Solution Explorer, double-click the web page you want to design. (Start with Default.aspx if you haven't added any additional pages.)
Visual Studio gives you three ways to look at an .aspx page:
Here you'll see a graphical representation of what your page looks like.
Here you'll see the underlying markup, with the HTML for the page and the ASP.NET control tags.
This combined view allows you to see both the design view and source view at once, stacked one on top of the other. This is the view that most ASP.NET developers prefer, provided they have enough screen ...