参考官网：Blazor Tutorial | Build your first app (microsoft.com)
dotnet new blazorserver -o BlazorApp --no-https
cd BlazorApp
dotnet watch run
PS：通过vs2019创建项目WebApplication1 ，运行：dotnet watch run --project WebApplication1
原文：https://www.cnblogs.com/ligenyun/p/14828412.html