I've tiked html5 Checkbox when creating asp.net mvc3 prject, I wated to use tag but I couldn't access it. Also in Tools->Options->HTML->Validation->Target I found out the latest version HTML I have is 4.01 What should I do now? I need to use tag. Your answer is very helpful. Thaks.
1 Answer
Make sure you have installed the ASP.NET MVC 3 Tools Update which, among other things, adds HTML 5 design-time support. Scott Gu also blogged about it:

2 Comments
Darin Dimitrov
Me too, I have installed it. And once I installed it I got all those new features. Try reinstalling it.
starrr
I dont know what was the problem but this link help me and it works perfect :) raihaniqbal.net/blog/2010/08/…