Some love and others hate, HTML 5 seems to be coming to share the waters.
It is possible to work with HTML 5 in Visual Studio 2010 and Visual Studio 2008 for this follow the steps below:
1) The first thing to do is download a file package that is in this link, it have a file with the xml schema, files and records of the four windows.
2) Now we will copy or move the file "html_5.xsd" to "C: \ Program Files \ Microsoft Visual Studio 10.0 \ Common7 \ Packages \ schemas \ html"
3) Execute the registry file "VS-2010-x64.reg" or "VS-2010-x86.reg"according to your installed version 64 bits or 32 bits.
4) Now we will validate these changes, open up VS 2010 and go to "Tools> Options> Text Editor HTML>> Validation ", and HTML5 validation profile must be available as shown in the picture below.