‫تهیه قالب برای ارسال ایمیل‌ها در ASP.NET Core توسط Razor Viewها

using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc.Abstractions;
using Microsoft.AspNetCore.Mvc.ModelBinding;
using Microsoft.AspNetCore.Mvc.Razor;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.AspNetCore.Mvc.ViewFeatures;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Routing;
using Microsoft.Extensions.DependencyInjection.Extensions;
using Microsoft.Extensions.DependencyInjection;
using System.IO;
using System.Threading.Tasks;
using System;
namespace WebToolkit
{    public static class RazorViewToStringRendererExtensions    {        public static IServiceCollection AddRazorViewRenderer(this IServiceCollection services)        {            services.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();            services.AddScoped<IViewRendererService, ViewRendererService>();            return services;        }    }    public interface IViewRendererService    {        Task<string> RenderViewToStringAsync(string viewNameOrPath);        Task<string> RenderViewToStringAsync<TModel>(string viewNameOrPath, TModel model);    }    /// <summary>    /// Modified version of: https://github.com/aspnet/Entropy/blob/dev/samples/Mvc.RenderViewToString/RazorViewToStringRenderer.cs    /// </summary>    public class ViewRendererService : IViewRendererService    {        private readonly IRazorViewEngine _viewEngine;        private readonly ITempDataProvider _tempDataProvider;        private readonly IServiceProvider _serviceProvider;        private readonly IHttpContextAccessor _httpContextAccessor;        public ViewRendererService(                    IRazorViewEngine viewEngine,                    ITempDataProvider tempDataProvider,                    IServiceProvider serviceProvider,                    IHttpContextAccessor httpContextAccessor)        {            _viewEngine = viewEngine;            _tempDataProvider = tempDataProvider;            _serviceProvider = serviceProvider;            _httpContextAccessor = httpContextAccessor;        }        public Task<string> RenderViewToStringAsync(string viewNameOrPath)        {            return RenderViewToStringAsync(viewNameOrPath, string.Empty);        }        public async Task<string> RenderViewToStringAsync<TModel>(string viewNameOrPath, TModel model)        {            var actionContext = getActionContext();            var viewEngineResult = _viewEngine.FindView(actionContext, viewNameOrPath, isMainPage: false);            if (!viewEngineResult.Success)            {                viewEngineResult = _viewEngine.GetView("~/", viewNameOrPath, isMainPage: false);                if (!viewEngineResult.Success)                {                    throw new FileNotFoundException($"Couldn't find '{viewNameOrPath}'");                }            }            var view = viewEngineResult.View;            using (var output = new StringWriter())            {                var viewDataDictionary = new ViewDataDictionary<TModel>(new EmptyModelMetadataProvider(), new ModelStateDictionary())                {                    Model = model                };                var viewContext = new ViewContext(                    actionContext,                    view,                    viewDataDictionary,                    new TempDataDictionary(actionContext.HttpContext, _tempDataProvider),                    output,                    new HtmlHelperOptions());                await view.RenderAsync(viewContext).ConfigureAwait(false);                return output.ToString();            }        }        private ActionContext getActionContext()        {            var httpContext = _httpContextAccessor?.HttpContext;            if (httpContext != null)            {                return new ActionContext(httpContext, httpContext.GetRouteData(), new ActionDescriptor());            }            httpContext = new DefaultHttpContext { RequestServices = _serviceProvider };            return new ActionContext(httpContext, new RouteData(), new ActionDescriptor());        }    }
}

{     "dependencies": {        "Microsoft.AspNetCore.Mvc.ViewFeatures": "1.1.0",        "Microsoft.AspNetCore.Mvc.Razor": "1.1.0"    }
}

public void ConfigureServices(IServiceCollection services)
{
   services.AddRazorViewRenderer();
}

public class RenderController : Controller
{    private readonly IViewRendererService _viewRenderService;    public RenderController(IViewRendererService viewRenderService)    {        _viewRenderService = viewRenderService;    }    public async Task<IActionResult> RenderInviteView()    {        var viewModel = new InviteViewModel        {            UserId = "1",            UserName = "Vahid"        };        var emailBody = await _viewRenderService.RenderViewToStringAsync("EmailTemplates/Invite", viewModel).ConfigureAwait(false);        //todo: send emailBody        return Content(emailBody);    }
}

<!DOCTYPE html><html><head><meta http-equiv="Content-Language" content="fa" /><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><style type='text/css'>
     .main {
            font-size: 9pt;
            font-family: Tahoma;
     }</style></head><body bgcolor="whitesmoke" style="font-size: 9pt; font-family: Tahoma; background-color: whitesmoke; direction: rtl;"><div class="main">@RenderBody()</div></body></html>

 @using Sample.ViewModels
@model RegisterEmailConfirmationViewModel
@{
Layout = "~/Views/EmailTemplates/_EmailsLayout.cshtml";
}
با سلام
<br />اکانت شما با مشخصات ذیل ایجاد گردید:
....

<a style="direction:ltr" href="@Url.Action("Index", "Home", values: new { area = "" }, protocol: this.Context.Request.Scheme)">@Model.EmailSignature</a>