At work, we are planning to migrate our WPF application from .NET Framework 4.7 to .NET Core 3.0. The main reason for doing so is that it was always a big pain to organize the updates of the .NET Framework on our customer machines. So being able to bundle .NET Core with our application is a big plus for us. Then, for sure, we are looking for the performance improvements brought by .NET Core and finally the new capabilities brought by the fast pace of innovation of .NET Core.
یک مثال: تهیهی یک TagHelperComponent جهت ویرایش تگهای article
using System; using System.ComponentModel; using System.Threading.Tasks; using Microsoft.AspNetCore.Mvc.Razor.TagHelpers; using Microsoft.AspNetCore.Razor.TagHelpers; using Microsoft.Extensions.Logging; namespace TestTagHelperComponent2.Utils { public class ArticleTagHelperComponent : TagHelperComponent { public override Task ProcessAsync(TagHelperContext context, TagHelperOutput output) { if (string.Equals(context.TagName, "article", StringComparison.OrdinalIgnoreCase)) { output.PostContent.AppendHtml("<script>console.log('Running ArticleTagHelperComponent');</script>"); } return Task.CompletedTask; } } }
<article> For Testing the TagHelperComponent. </article>
در ادامه برای اینکه سیستم را از وجود این TagHelperComponent مطلع کنیم، باید آنرا به صورت یک سرویس جدید، به فایل آغازین برنامه معرفی کنیم:
public void ConfigureServices(IServiceCollection services) { services.AddTransient<ITagHelperComponent, ArticleTagHelperComponent>(); services.AddMvc(); }
نکتهی مهم TagHelperComponentها این است که در قسمت بررسی تگ در حال پردازش:
if (string.Equals(context.TagName, "article", StringComparison.OrdinalIgnoreCase))
using System; using System.ComponentModel; using System.Threading.Tasks; using Microsoft.AspNetCore.Mvc.Razor.TagHelpers; using Microsoft.AspNetCore.Razor.TagHelpers; using Microsoft.Extensions.Logging; namespace TestTagHelperComponent2.Utils { [HtmlTargetElement("article")] [EditorBrowsable(EditorBrowsableState.Never)] public class ArticleTagHelperComponentTagHelper : TagHelperComponentTagHelper { public ArticleTagHelperComponentTagHelper( ITagHelperComponentManager componentManager, ILoggerFactory loggerFactory) : base(componentManager, loggerFactory) { } } }
@addTagHelper *, Microsoft.AspNetCore.Mvc.TagHelpers @addTagHelper *, TestTagHelperComponent2
پس از این تنظیمات است که اگر برنامه را اجرا کنید، این تغییر را (درج اسکریپت در بین تگ article) ملاحظه خواهید کرد:
Tag Helper Components توکار ASP.NET Core 2.0
در حال حاضر دو TagHelperComponent به نامهای HeadTagHelper و BodyTagHelper به صورت پیش فرض به سیستم اضافه شدهاند. یعنی تگهای head و body در ASP.NET Core 2.0 را میتوان توسط TagHelperComponent تحت تاثیر قرار داد و نیازی به تنظیمات TagHelperComponentTagHelper اضافهی فوق برای آنها وجود ندارد.
یک مثال:
public class MyHeadTagHelperComponent : TagHelperComponent { public override Task ProcessAsync(TagHelperContext context, TagHelperOutput output) { if (string.Equals(context.TagName, "head", StringComparison.OrdinalIgnoreCase)) { output.PostContent.AppendHtml("<script>console.log('head tag');</script>"); } return Task.CompletedTask; } }
public void ConfigureServices(IServiceCollection services) { services.AddTransient<ITagHelperComponent, MyHeadTagHelperComponent>(); services.AddTransient<ITagHelperComponent, ArticleTagHelperComponent>(); services.AddMvc(); }
I was pleasantly surprised by how easy it was to setup and install ASP.NET Core 2.1 on Linux. I did it for the first time in 15 minutes with no previous experience with .NET Core on Linux. I did it the second time, in production, in 5 minutes by following these instructions.
In this article, I show you how to install the .NET Core runtime on CentOS, how to get a sample ASP.NET Core project running on Kestrel as a service for reliability, and how to configure both the code and the firewall to enable remote access. Finally, I discuss what I would do differently for actual production usage.
نگاهی دقیق به ASP.NET CORE
ASP.NET Core is a completely new web framework for building modern cloud-based web applications. In this presentation learn all about ASP.NET Core and including the latest features and innovations in MVC. You’ll see how you can build applications that run cross-platform on Windows, Mac and Linux via .NET Core. You’ll also see how ASP.NET Core MVC gives you a unified web programming model for building both web UI and web APIs.
EF7 و منابع داده متفاوت
We're going to use Dapper.NET on our project; that much is not in doubt. However, we're not going to start development with it, and it will not be the only ORM in use. The plan is to develop this project using Entity Framework, and later optimize to use Dapper.NET in certain scenarios where the system needs a performance boost.
این تصمیم به صورت رسمی لغو شدهاست: