app.UseEndpoints(endpoints =>
{

            endpoints.MapControllerRoute(
              name: "lang",
              pattern: "{language}-{country}/{controller=Home}/{action=Index}/{id?}",
              constraints: new { id = new IntRouteConstraint() },
              dataTokens: new { locale = "{language}-{country}" }
              );

            endpoints.MapControllerRoute(
                name: "default",
                pattern: "{controller=Home}/{action=Index}/{id?}");
        });

}

在dataTokens:这里 怎么设置获取动态的{language}-{country}呢？

只要是实现基于URL的多语言方案
http://www.xx.com/zh-CN/order/list
http://www.xx.com/en-US/order/list