In vs2012, because msdn is not built in by default, there is no separate msdn for vs2008 and above, but it is replaced by Microsoft Help Viewer.
This component is included in the ISO installation image of vs2012 and will be installed together during vs2012 installation.
Therefore, Microsoft Help Viewer must be called for installation. Press CTRL + ALT + F1 to call it up.
Msdn for vs2012 download: http://www.microsoft.com/zh-CN/download/details.aspx? Id = 34794
Decompress the package and you will see
This is a ghost ..................
Press CTRL + ALT + F1 to bring up Microsoft Help Viewer. Find the folder C: \ programdata \ Microsoft \ helplibrary2 \ catalogs \ visualstudio11 \ incoming.
Copy the compressed package and the helpcontentsetup. MSHA file to the file.
Then, click "disk", "add", and "Update". After the upgrade, msdn is installed. Microsoft Help Viewer is also called up when it is used.
Press CTRL + ALT + F1
If the network speed is fast enough, you can also choose onlie (online installation), click Update below,
Click "Click here to download now", and then wait for the download and installation.
Install msdn for vs2012