.NET Core, UWP, NuGet INNOVATION 2.0 ■ .NET Core MicrosoftMicrosoft starts starts to to callcall it itsimply simply .NET .NET 5 5 ■ .NET Standard ■ UWP ■ NuGet Packages ■ .NET on Linux .NET 5 - A Unified Platform ■ various tech stacks ■ .NET Framework ■ .NET Core ■ .NET Xamarin ■ .NET Mono ■ .NET 5 ■ towards one Standard Library ■ 5.0 Actual Version https://appdevelopermagazine.com/looking-at-the-future-of-.net/ School of Engineering © K. Rege, ZHAW 2 von 96 … .NET 5 - A Unified Platform ■ .NET 5 is the next step towards a unified plattform ■ Produce a single .NET runtime and framework that can be used everywhere ■ Take the best of .NET Core, .NET Framework, Xamarin and Mono. ■ Build that product out of a single code-base ■ Open source and community-oriented on GitHub. ■ Cross-platform implementation ■ Side-by-side installation ■ Capable command-line interface (CLI). School of Engineering © K. Rege, ZHAW 3 von 96 .NET Framework Evolution ■ The .NET Framework library has evolved Mono Project during the years ■ Open Source Variant of .NET ■ gestartet 2004 ■ Goal: Run Microsoft .NET applications cross-platform ■ Better development tools to Linux developers. ■ Mono can be run on many platforms ■ Android, most Linux distributions, ■ BSD, macOS, Windows, Solaris, and even some game consoles such as PlayStation 3, Wii, and Xbox 360. ■ Current status ■ .NET 4.7.2 is supported ■ .NET Standard 2.1 supported .NET 1.NET 2 .NET School of Engineering © K. Rege, ZHAW 4 von 96 Xamarin ■ Xamarin is a Microsoft owned San Francisco-based software company ■ Founded in May 2011 by Mono engineers ■ Xamarin library based heavily on Mono ■ Xamarin.Forms using C# and XAML that is multi platform -> XAML Flavour ■ Xamarin is a technology that allows to develop native apps for multiple platforms ■ Using a single C# codebase and .Net. ■ common code can be shared and reused, allowing to reduce the codebase . ■ Microsoft has defined a cross platform ".Net Standard" ■ but only Xamarin Forms provides portable GUIs yet https://docs.microsoft.com/en-us/xamarin/get-started/supported-platforms School of Engineering © K. Rege, ZHAW 5 von 96 What about the UI ■ There is a different UI library on each platform ■ in the .Net Ecosystem still an issue. ■ On Windows, we find WPF (Windows Presentation Foundation) and WinForms, also for Core ■ On Linux and macOS (and also Windows) we have GtkSharp. XAML XAML “flavors” “flavors” ■ Xamarin.Forms (XAML based) ■ iOS, Android, macOS and UWP since Core 3.0 School of Engineering © K. Rege, ZHAW 6 von 96 … What about the UI https://docs.microsoft.com/en-us/windows/desktop/choose-your-technology School of Engineering © K. Rege, ZHAW 7 von 96 .NET 6 Multi-platform App UI (MAUI) ■ .NET Multi-platform App UI ■ Supported with .NET 6 (LTS) ■ An evolution/replacement of Xamarin.Forms ■ Xamarin.Forms will continue to receive service releases through November 2022 ■ Xamarin XAML “flavor” in .NET MAUI. JavaJava Applets Applets ■ Cross-platform: Android, iOS, and UWP. revivedrevived ■ Suitable for reuse by other frameworks such as Blazor ■ Support in Blazor Desktop in .NET 6. ■ Full-App Themes through styling for Fluent UI and Material Design ■ Fluent Design originated by Microsoft with Win 8 (Metro) Fluent ■ Material Design originated by Google for Android (2015) ■ Rege Design originated by K. Rege for Waikiki ■ New Visual strategy ■ A combination of native controls and drawn controls JavaJava Swing Swing LookLook and and Feel Feel Material waikiki School of Engineering © K. Rege, ZHAW 8 von 96 Class Library Variants (shown in VS 17) ■ Build new Class Library Project ■ .NET Framework ■ uses the full .NET 4.x Framework classes ■ .NET Core -> .NET 5 ■ uses the Core Framework classes ■ increases API surface area of your library ■ only .NET Core Apps are compatible ■ .NET Standard ■ runs on any standard compatible framework ■ such as .NET Core, .NET Framework, Mono/Xamarin ■ more Apps that will be compatible ■ decreases API surface area compatible to your library ■ Legacy Portable ■ target a specific subset of .NET implementation. ■ strongly discourage their use in new application ■ ■ To install other projects goto link below Universal Windows ■ target a very UWP specific implem. Subset ■ + the number of Apps that will be compatible ■ Native (i.e. WIN32) ■ for C++ Libraries only https://dotnet.microsoft.com/download/visual-studio-sdks?utm_source=getdotnetsdk&utm_medium=referral School of Engineering © K. Rege, ZHAW 9 von 96 School of Engineering © K. Rege, ZHAW 10 von 96 Benefits of .NET Core ■ .NET Core (codename .NET vNext) ■ first introduced in 2014 ■ Open Source ■ The main benefits are: School of Engineering © K. Rege, ZHAW 11 von 96 … Benefits of .NET Core ■ Compatibility: ■ .NET Core: provides a portable subset of the .NET Framework ■ Class Libraries: CoreFX ■ smaller footprint than standard libraries ■ Performance and Scalability: ■ NET Core: enhance the performance and scalability due to wider platform support ■ Deployment Options: ■ .NET Framework: Internet Information Server only ■ .NET Core: directly in the cloud or self-host the application by creating own hosting process. ■ Framework -Dependent Deployment (FDD) ■ .NET Core SDK has to be installed on machine beforehand ■ Self-Contained Deployment (SCD) ■ .NET Core CLR and class library as part of application package School of Engineering © K. Rege, ZHAW 12 von 96 … Benefits: RyuJIT Compiler ■ New JIT Compiler (Byte Code to Machine Code) ■ more efficient native machine code ■ is 100% faster than previous version RoslinRoslin for for C# C# to to ■ generated 30% faster code BytecodeBytecode ■ supports X64 and X86 architectures ■ Profile guided optimization ■ Records information about code execution ■ This information is used for optimize code generation ■ Similar to Java's Hotspot approach but separated optimization step School of Engineering © K. Rege, ZHAW 13 von 96 … Benefit: Designed for Microservices ■ Azure App Service ■ For stateless microservices. ■ -> Fowler GoTo 2014 Talk https://www.youtube.com/watch?v=wgdBVIX9ifA ■ Based on Docker ■ Can be hosted in your own Linux or Windows infrastructure, ■ A cloud service such as Azure Container Service. ■ Azure Service Fabric ■ for large and complex microservice systems ■ superseded by AKS ■ Azure Kubernetes Service (AKS) https://azure.microsoft.com/en-us/services/kubernetes-service/ https://docs.microsoft.com/en-us/azure/aks/ School of Engineering © K. Rege, ZHAW 14 von 96 … Benefit: Another Application Model ■ Adds Another Application Model ■ .NET Framework: for Windows Forms, ASP.NET, and WPF. ■ NET Core: Windows Universal Apps and ASP.NET Core School of Engineering © K. Rege, ZHAW 15 von 96 When to Use .NET Core ■ Use .NET Core for your server application when: ■ You have cross-platform needs. ■ You are targeting microservices. ■ You are using Docker containers. ■ You need high-performance and scalable systems. ■ You need side-by-side .NET versions per application. ■ Use .NET Framework when: ■ Your App currently uses .NET Framework (recommendation is to extend instead of migrating). ■ Your App uses third-party .NET libraries or NuGet packages not available for .NET Core. ■ Your App uses .NET technologies that aren't available for .NET Core. ■ e.g. Registry,Win Forms, COM ■ Your app uses a platform that doesn’t support .NET Core. https://docs.microsoft.com/en-us/dotnet/standard/choosing-core-framework-server School of Engineering © K. Rege, ZHAW 16 von 96 Upgrade Path to .NET Core School of Engineering © K. Rege, ZHAW 17 von 96 Core Hello World School of Engineering © K. Rege, ZHAW 18 von 96 .NET Core Installation ■ Use of Version 5.0 https://dotnet.microsoft.com/download/dotnet/5.0 School of Engineering © K. Rege, ZHAW 19 von 96 Hello World Application with VS 19 ■ File > New > Project -> Console App (.NET Core) https://docs.microsoft.com/en-us/dotnet/core/tutorials/with-visual-studio School of Engineering © K. Rege, ZHAW 20 von 96 … Hello World Application Build and Run ■ Application template automatically defines a class, Program, with a single method, Main ■ To keep Console Window open add to generated main Method, eventually Console.Write("PressConsole.Write("Press anyany keykey toto continue...");continue..."); Console.ReadKey(true);Console.ReadKey(true); ■ And press start School of Engineering © K. Rege, ZHAW 21 von 96 Hello World Application with CLI ■ Simply start a new console and create a new directory, type > dotnet --list-sdks define global.json -> default dnet-version > dotnet new globaljson --sdk-version 5.0.200 define global.json -> default dnet-version toto be be used used when when you you run run .NET .NET Core Core CLI CLI command > dotnet new console command > dotnet run Hello World! ■ Generated files Run in Command Line directly using System; > dotnet hello.dll namespace temp { class Program { or static void Main(string[] args) { Console.WriteLine("Hello World!"); > hello.exe } } } <Project Sdk="Microsoft.NET.Sdk"> <PropertyGroup> <OutputType>Exe</OutputType> <TargetFramework>net5.0</TargetFramework> </PropertyGroup> </Project> https://docs.microsoft.com/en-us/dotnet/standard/frameworks School of Engineering © K. Rege, ZHAW 22 von 96 Universal Windows Platform ■ A single, guaranteed (same) API Surface ■ The same on all devices School of Engineering © K. Rege, ZHAW 23 von 96 … DOTNET CLI commands ■ CLI command structure consists of ■ the driver ("dotnet"), ■ the command (or "verb"), ■ and possibly command arguments and options. ■ Example greate, build and run https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet?tabs=netcore21