In vs we find two options build and rebuild for our solution and very rarely we give attention what do we require.
There is very much difference between both of them, if you have noticed it, build takes less time compared to rebuild.
When we build application it complies files which has been changed it does not compile all files in project, while in case of rebuild it compiles all files weather it has been changed or not. Mainly rebuild should be done when so many files are changed and also it might possible some files are changed outside of IDE.
Hope this information will help to speed up your application when you choose rebuild instead of build.
