If you have a file open, let's say at *.cs or *.cshtml file, in Visual Studio, the "Build" menu has an option to "Build Selection". It will build the project that file is contained in. I use this a lot so I am not always having to build the entire solution.
Currently in Rider, I am having to scroll through the solution explorer to find the project, then right click "Build Selected Projects". "Build Selection" support would be so much faster.