This update is the latest in a cumulative series of feature additions and bug fixes for Visual Studio 2012.
Entity Framework half-heartedly supported Domain-Driven Design patterns. But the new-from-scratch EF Core has brought new hope for developers to map your well-designed domain classes to a database, reducing the cases where a separate data model is needed. EF Core 2.1 is very DDD friendly, even supporting things like fully encapsulated collections, backing fields and the return of support for value objects. In this session, we'll review some well-designed aggregates and explore how far EF Core 2.1 goes to act as the mapper between your domain classes and your data store.
سلام.
من طبق برنامه و حرف شما در اینجا کد رو به صورت زیر نوشتم :
public class Post : BaseEntity
{
public new int Id { get; set; }
public virtual ICollection<Comment.Comment> Comments { get; set; }
[NotMapped]
public int CommentsCount
{
get
{
if (Comments == null || !Comments.Any())
return 0;
return Comments.Count;
}
}
public Post()
{
Comments = new List<Comment.Comment>();
}
}var post = _tEntities.Include(p => p.User).Include(p => p.Comments)
.Select(p => new PostListViewModels
{
Id = p.Id,
Username = p.Username,
CommentCount = p.CommentsCount
});The specified type member 'CommentsCount' is not supported in LINQ to Entities. Only initializers, entity members, and entity navigation properties are supported
In addition to Windows 10, WinJS 4.0 supports the latest versions of all your favorite browsers, including the new Microsoft Edge.
We realize that many developers are more familiar with, and may prefer
to use, other frameworks for various parts of their app. We have checked
in wrappers for AngularJS, KnockoutJS, and ReactJS
to our GitHub project. You can now create Windows or web applications
using other web frameworks, while still having access to the rich set of
controls that WinJS provides.
.NET Core + Angular Dashboard
Topics Covered:
- Building a dashboard application in Angular
- Building a Web API in .NET Core 2.0
- Using Chart.js to build stunning charts of different types
- Making HTTP requests using Angular to query a Web API
- Using Postman to send requests
- Working with Observables
- Using Input and Output decorators in Angular
- Using PostgreSQL and pgAdmin
- Automatically seeding a database with large amounts of sample data
- Styling an application using custom CSS and Bootstrap 4
- Using Map, Filter, and Reduce in Javascript
- Creating Routes in Angular
- Get, Put, Post, Patch Web API Controller Action request types
- Configuring your API for CORS
منظور من اجرای ASP.NET Core بر روی Full Dot Net Framework نیست. با توجه به پشتیبانی اضافه کردن Assemblyهای کامپایل شده برای Full Dot Net Framework بدون کامپایل مجدد در Dot Net Core 2 که شامل نزدیک به 70% از Nuget Packageهای موجود میشود ( حتی مواردی پیچیده چون Web API OData و NQuery )، می‌توان پروژه را روی Dot Net Core 2 پیش برد و در صورت لزوم Dllهای Dot Net Full را ارجاع زد. نتیجه حتی از اجرای ASP.NET Core بر روی Full Dot Net Framework نیز بهتر است، بابت مزیت‌های ذاتی طراحی Dot Net Core
فقط کسانی که نیاز به استفاده از WCF یا .NET Remoting یا Com Interop دارند، تحت تاثیر این تصمیم قرار می‌گیرند.
Can reference existing .NET Framework libraries. The best thing is no recompile required, so this includes existing NuGet packages. Of course, this will only work if the consumed libraries use APIs that exist in .NET Standard. However, our extensive API surface results in 70% of all NuGet packages to be API compatible with .NET Standard 2.0.
.NET MAUI is the evolution of Xamarin.Forms and a major aspect of the upcoming .NET 6 release.
HTTP Logging is a middleware that logs information about HTTP requests and HTTP responses. HTTP logging provides logs of
HTTP request information
Common properties
Headers
Body
HTTP response information
HTTP Logging is valuable in several scenarios to
Record information about incoming requests and responses
Filter which parts of the request and response are logged
Filtering which headers to log
Chrome 89.0.4389.72, released by the search giant for Windows, Mac, and Linux on Tuesday, comes with a total of 47 security fixes, the most severe of which concerns an "object lifecycle issue in audio."
Here’s a summary of what’s new in this preview release:
- ASP.NET Core support for native AOT
- Server-side rendering with Blazor
- Render Razor components outside of ASP.NET Core
- Sections support in Blazor
- Monitor Blazor Server circuit activity
- SIMD enabled by default for Blazor WebAssembly apps
- Request timeouts
- Short circuit routes
