You will get an intellisense for color selector as shown below
Design Time Features in Source Editing:
There are some cases you need a designer to add the control to your page. There are some cases which you could not do in source editor. If you want to add a button click event you could do by double clicking the control or hooking the event handler using property window.Now you can create an event handler using source editor as below
The Page Inspector:
Assume you had a complex web site which contains several project files, layouts and master pages. You may be asked to change a picture or some text, question is where it is located in this complex web site?Now you can find the answer using page inspector. right click on your project in solution explorer.
For more information about ASP.NET Please visit http://www.techbubbles.com/aspnet/whats-new-in-visual-studio-2011-and-asp-net-4-5/
What’s new in Visual Studio 2011 and ASP.NET 4.5