The documentation says that VS after the change in the launched startup code project
app.Run(async (context) => { await context.Response.WriteAsync("Hello World!"); }); on code
app.Run(async (context) => { await context.Response.WriteAsync("Hello World new!"); }); followed by saving the file and refreshing the page in the browser without restarting the project should give the browser Hello World new! but this does not happen, the previous line is displayed. How to enable the option to update the application without restarting?