The first version of ASP.NET was released 17 years ago and during these years, it is fascinating to see how the ASP.NET team constructively reacted through these years to the major shifts happening on the web. Initially a platform that was closed and tried to hide and abstract the web; ASP.NET has metamorphized into an open source and cross platform - one that fully embraces the nature of the web. This is the first part of a series of 3 articles that will cover the history of ASP.NET from its launch to the latest ASP.NET Core releases.
کش کردن حاصل عملیات در EF Core
Entity Framework (EF) Core is the rearchitected and rewritten version of the Entity Framework object relational mapping engine for .NET Core applications. It is very light-weight, extensible, and cross platform.
However, high transaction .NET Core applications using EF Core face performance and scalability bottlenecks in the database-tier under peak loads. This is because, although you can linearly scale the application tier by adding more application servers, you cannot add more database servers to scale it.
But, if you use a distributed cache like NCache in your .NET Core applications, you can quickly remove these performance and scalability bottlenecks and handle extreme transaction loads.
You'll often hear the terms framework
and platform
used interchangeably. This can be very confusing. You'll hear that .NET Core is a platform. Then you'll read that .NET Core is cross-platform. Next, you'll learn that .NET Core is a framework. And it doesn't help that framework is part of the name of the original full .NET Framework.
In this post, I explain the difference between frameworks and platforms and explain why sometimes you'll see .NET being referred to as a framework and other times see it referred to as a platform.
Come learn the top 7 reasons to use Visual Studio 2017 if you are a C++ developer. Whether you are using the product and are looking to upgrade, or you never used it before but you are considering it now, join us to discover how Visual Studio 2017 raises the bar in terms of C++ productivity. From C++ standards conformance to coding productivity, cross-platform development for Windows, Linux, Android, and iOS and CMake support, these are only a few of the topics we discuss in this demo-packed session.
We are excited to announce the release of .NET Core 1.0, ASP.NET Core 1.0 and Entity Framework 1.0, available on Windows, OS X and Linux! .NET Core is a cross-platform, open source, and modular .NET platform for creating modern web apps, microservices, libraries and console applications.
This release includes the .NET Core runtime, libraries and tools and the ASP.NET Core libraries. We are also releasing Visual Studio and Visual Studio Code extensions that enable you to create .NET Core projects. You can get started at https://dot.net/core. Read the release notes for detailed release information.
موشکافی ASP.NET 5
ASP.NET 5 is an entirely new web stack, rebuilt from the ground up to run fast, cross-platform, and completely configurable. Join David Fowler, one of the architects of ASP.NET 5, as he goes deep into the core of ASP.NET 5. What's the hosting model? How does the HTTP stack work? How do middleware and NuGet packages get pulled in to compose your application? How do the different servers (IIS, Kestrel, WebListener, etc.) actually work? How can you take advantage of these things to build lean, fast, optimized web apps on the new ASP.NET 5 platform? Come find out!
معرفی Blazor Hybrid
معرفی Xamarin و مزیتهای استفاده از آن
تفاوت Desktop Application با Web Application
ممنون از مطالب مفیدتون.
آیا دو دستور زیر با هم یکسان هستند یا خیر؟
range unbounded preceding
range between unbounded preceding and current row
و کوئری اولتون باید مساله running total باشه، که به سادگی توسط Over Clause حل شده.
کوئری زیر روشی بوده که قبل از نسخه 2012 برای حل اینگونه مسائل مورد استفاده قرار میگرفته
SELECT AccountId, TranDate, TranAmt, D.sumAmt AS older_method Sum(TranAmt) OVER(partition by Accountid ORDER BY TranDate RANGE UNBOUNDED PRECEDING) AS SumAmt FROM #Transactions AS T1 CROSS APPLY (SELECT SUM(T2.TranAmt) FROM #Transactions AS T2 WHERE T2.AccountId = T1.AccountId AND T2.TranDate <= T1.TranDate) AS D(SumAmt) ORDER BY T1.AccountId, T1.TranDate;