I opened my vs2010 solution with vs2012 but it didn\'t make any conversion as from 2008 to 2010 was happening. So my solution still remains the same as 10 label on it. when
You can convert a project from VS2010 to VS2012 by doing the following:
Add the 2010 project to your VS2012 solution by right-click on your solution in the Solution Explorer and Select Add --> Existing Project...
The project will appear in the solution and will have (Visual Studio 2010) appended to its name.
Right-click on the added project and select Properties.
In the Configuration Properties --> General pane, change the setting in Platform Toolset field to Visual Studio 2012 (v110)
Repeat for each configuration type, e.g. Release and Debug.