title: How to upgrade all solution projects .Net framework 4.5.1 to 4.8 Visual Studio 2019
body: <p>I have a solution in Visual Studio 2019 with many C # projects. I need to retarget all of the projects from the .NET Framework 4.5.1 to 4.8. Is it possible to change target at once or do I have to do it separately with every single one of them? </p>
  
  <p>PS: I tried 'TargetFrameworkMigrator', but it doesn't work with (VS2019) / .net 4.8.</p>
  
  <p>Thank you for your help.</p>