Visual Studio Builds Projects Every Time I Run

Question

I have a .NET solution in Visual Studio 2010 with a bunch of projects. Up until recently, when I would run the startup project from within the IDE, projects would only buil

Answer 1

TargetFramework in .csproj vs. supportedRuntime-sku in app.config

Just found another reason for rebuilds (at least with the new sdk-style project files, didn't try for the "old style" projects): if the TargetFramework element in the .csproj file does not match the sku-attribute of the supportedRuntime-entry in the app.config, visual studio will also rebuild the project every single time.

For example, targeting 4.6.2 in the .csproj

  
    net462
  

vs. 4.6.1 specified in app.config

will trigger a rebuild.