I'm working on a project that targets .net 4.0, It won't be changing to 4.5 in a hurry.
When I create a new project it defaults to .net 4.5. Is there anyway I can default it to 4.0 either globally at the Visual Studio level or (more preferably) at the solution level?
The easiest way is to just change the default .Net Framework version in the new project dialog.
- Go to File -> New Project
- At the top middle switch ".Net Framework 4.5" to ".Net Framework 4"
- Click the project you want
From that point on the "New Project" dialog will default to ".Net Framework 4"
来源：https://stackoverflow.com/questions/21420905/how-to-set-the-default-net-framework-for-new-projects-in-vs2013