hello-aspnet-core/AspNetCoreDefaultHost/Pages/Basic/PageBase.cs

using AspNetCoreDefaultHost.Configs;
using AspNetCoreSsrTemplateEngine.DataBoundContext;
using Microsoft.AspNetCore.Http;
using System.Threading.Tasks;

namespace AspNetCoreDefaultHost.Pages.Basic
{
    public abstract class PageBase : ComponentBase, IPage
    {
        protected virtual IReadonlyDataBindContext PageDataBindContext { get; set; } = HostConfig.RootDataBindContext;
        protected virtual ComponentBase MasterPage { get; set; }
        public virtual async Task ProcessRequestAsync(HttpContext context)
        {
            context.Response.ContentType = "text/html";
            PreRender();

            if (null != MasterPage) await MasterPage.RenderAsync(PageDataBindContext, context.Response.Body);
            else await RenderAsync(PageDataBindContext, context.Response.Body);

            PostRender();
        }

        protected virtual void PreRender()
        {
        }

        protected virtual void PostRender()
        {
        }
    }
}