using System.Runtime.Serialization;

namespace AOP03.DataContracts
{
    [DataContract]
    public class User
    {
        [DataMember]
        public int Id { set; get; }

        [DataMember]
        public string Name { set; get; }
    }
}

using System;
using System.Collections.Generic;
using System.Reflection;
using System.Runtime.Serialization;
using PostSharp.Aspects;
using PostSharp.Extensibility;
using PostSharp.Reflection;

namespace AOP03
{
    [Serializable]
    //این ویژگی تنها نیاز است به کلاس‌ها اعمال شود
    [MulticastAttributeUsage(MulticastTargets.Class)]
    public class DataContractAspect : TypeLevelAspect, IAspectProvider
    {
        public IEnumerable<AspectInstance> ProvideAspects(object targetElement)
        {
            var targetType = (Type)targetElement; //همان نوعی است که ویژگی جاری به آن اعمال خواهد شد

            //این سطر معادل است با درخواست تولید ویژگی دیتاکانترکت
            var introduceDataContractAspect = new CustomAttributeIntroductionAspect(
                new ObjectConstruction(typeof(DataContractAttribute).GetConstructor(Type.EmptyTypes)));

            //این سطر معادل است با درخواست تولید ویژگی دیتاممبر
            var introduceDataMemberAspect = new CustomAttributeIntroductionAspect(
                new ObjectConstruction(typeof(DataMemberAttribute).GetConstructor(Type.EmptyTypes)));

            //در اینجا کار اعمال ویژگی دیتاکانترکت به کلاسی که به عنوان پارامتر متد جاری
            //دریافت شده انجام خواهد شد
            yield return new AspectInstance(targetType, introduceDataContractAspect);

            //مرحله بعد کار اعمال ویژگی دیتاممبر به خواص کلاس است
            foreach (var property in targetType.GetProperties(BindingFlags.Public |
                                                          BindingFlags.DeclaredOnly |
                                                          BindingFlags.Instance))
            {
                if (property.CanWrite)
                    yield return new AspectInstance(property, introduceDataMemberAspect);
            }
        }
    }
}

 [assembly: DataContractAspect(AttributeTargetTypes = "AOP03.DataContracts.*")]

I have a better understanding of the new runtime, the tooling, and the dependencies required to build applications 

Here are 13 techniques and tools that prove the power of lazy programming. The next time the boss tells you it’s time to roll up your sleeves and lean into the console, head to the nap room instead. 

A foreign worker has a sponsoring firm that handles the lengthy green-card process. If the developer leaves the firm a year into the process, they need to restart the green-card process from beginning

<%@ Application Codebehind="Global.asax.cs" Inherits="YourAppName.MvcApplication" Language="C#" %>

public class MvcApplication : System.Web.HttpApplication
    {
        protected void Application_Start()
        {
            ...//
        }
    }

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
namespace SimpleApp
{
    public class MvcApplication : System.Web.HttpApplication
    {
        protected void Application_Start()
        { 
            AreaRegistration.RegisterAllAreas();
            RouteConfig.RegisterRoutes(RouteTable.Routes);
        }
        protected void Application_BeginRequest() 
        {
            RecordEvent("BeginRequest");
        }
        protected void Application_AuthenticateRequest() 
        {
            RecordEvent("AuthenticateRequest");
        }
        protected void Application_PostAuthenticateRequest()
        { 
            RecordEvent("PostAuthenticateRequest");
        }
        private void RecordEvent(string name)
        {
            List<string> eventList = Application["events"] as List<string>;
            if (eventList == null) 
            { 
                Application["events"] = eventList = new List<string>(); 
            } 
            eventList.Add(name);
        }
    }
}

using System.Web.Mvc;
namespace SimpleApp.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            return View(HttpContext.Application["events"]);
        }

    }
}

@model List<string>
@{
    ViewBag.Title = "Events List";
 
}
<h5>Events</h5>
<table>
    @foreach (string eventName in Model)
    {    
        <tr>
            <td>@eventName</td>
        </tr>      
    }

</table>

Microsoft. Data.SqlClient 5.2 preview 4 is out, and includes the new high performance SqlBatch API: execute multiple commands in a single network roundtrip 

This preview of .NET 7 includes improvements to type converters, JSON contract customization, System.Formats.Tar API updates, constraints to .NET template authoring, and performance enhancements in the CodeGen area.