.net core控制台程序中使用原生依赖注入

如果要在程序中使用dbcontext，则需要先在nuget中安装microsoft.entityframeworkcore.sqlserver

using consoleapp1.entityframeworkcore;
using microsoft.entityframeworkcore;
using microsoft.extensions.dependencyinjection;
using system;
using consoleapp1.businesslogic;

namespace consoleapp1
{
    class program
    {
        static void main(string[] args)
        {
            startup();
            console.writeline("hello world!");
        }

        private static void startup()
        {
            var services = new servicecollection();
            var connectionstring = "data source=localhost;initial catalog=testdb;user id=sa;password=123;";
            services.adddbcontext<mydbcontext>(options => options.usesqlserver(connectionstring));

            services.addscoped<idatabasebo, databasebo>();
            var provider = services.buildserviceprovider();
            using (var servicescope = provider.createscope())
            {
                var serviceprovider = servicescope.serviceprovider;
                var databasebo = serviceprovider.getservice<idatabasebo>();
                databasebo.generatedata();
            }
        }
    }
}