.NET Core 2.1 and beyond: what s the fuzz all about?

Transcription

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2 .NET Core 2.1 and beyond: what s the fuzz all about?

3 Agenda A bit of history.net Standard.NET Core CLI Deployment API s SignalR So platform independent? Really?

4 A short history of.net

5 .NET Framework history Version number CLR Version Release date Support ends VS Version Windows Replaces VS.Net XP SP VS.NET 2003 XP SP2, SP VS.NET Expression Blend Vista VS , 8, , VS VS VS , VS v VS 2015 Upd.1 10 v v VS v VS v VS v ? - VS v

6 C# Versions Version Date.NET Framework VS Version C# 1.0 jan-02.net Framework 1.0 VS.NET 2002 C# 1.1 C# 1.2 apr-03.net Framework 1.1 VS.NET 2003 C# 2.0 nov-05.net Framework 2.0 VS 2005 C# 3.0 nov-07.net Framework 2.0.NET Framework 3.0 VS 2008.NET Framework 3.5 VS 2010 C# 4.0 apr-10.net Framework 4 VS 2010 C# 5.0 aug-12.net Framework 4.5 VS 2012 VS 2013 C# 6.0 jul-15.net Framework 4.6 VS 2015 C# 7.0 mrt-17.net Framework VS 2017 C# 7.1 aug-17.net Framework 4.7 VS C# 7.2 nov-17.net Framework VS C# 7.3 mei-17.net Framework VS

7 And then we also have Xamarin Windows Android IOS Mac Mono Universal Windows Platform

8 Introducing.NET Standard

9 When compared to code C# Code Class (i.e. Customer).NET Standard.NET Framework.NET Core Interface (i.e. ICustomer).NET Standard

10 .NET Standard defines the API s an implementation should have

11 Supported versions.net Standard NET Core NET Framework Mono Xamarin.iOS Xamarin.Mac Xamarin.Android UWP Windows Windows Phone Unity

12 .NET Core is An API spec.net Core is an API contract Supported by multiple.net implementations Flexible architecture General purpose, modular and layered Also optimized for particular workloads Install app-local or side-by-side by default Tools Commandline tools provide a power experience Visual Studio and VS Code provide productivity

13 .NET Core is Open Source Open Source is shared ownership Open and buildable on GitHub Merged hundreds of PRs from the community Open Design Process Language design notes are published on GitHub API design reviews are on Google Hangouts Sponsored by Microsoft Microsoft contributes 100s of employees Microsoft ships supported distributions.

14 .NET Core workloads UWP UWP apps are compiled with.net Native Supported on Windows 10 ASP.NET 5 MVC web apps and services run on CoreCLR Supported on Linux, OS X and Windows Native executables Console apps that are compiled with.net native Supported on Linux, OS X and Windows

15 Number of Lines of CoreFX C# Code #Lines of C# Code Shared Windows Unix Linux OSX

16 Number of lines platform specific code Line numbers per platform Windows Unix Linux OSX

17 The CLI

18 Improved and new commands dotnet new console/web/mvc/angular/etc dotnet watch dotnet user-secrets dotnet ef

19 dotnet new * Classic Projects console,classlib,sln Web Projects web, mvc, razor, angular, eract, reactredux, razorclasslib, webapi Unittest projects mstest, nunit, xunit Web items viewimports, viewstart, page, webconfig Unittest items nunit-test Generic globaljson, sln

20 Demo CLI: new

21 dotnet watch dotnet watch run: start an app and restart after changes dotnet watch build: build an app, rebuild after changes dotnet test: run unit tests, re-run after changes

22 Demo CLI: watch

23 User-secrets Add to the.csproj the following key (to PropertyGroup) <UserSecretsId>[user_secrets_id]</UserSecretsId> Set the secret: dotnet user-secret set [key] [value] id [user_secrets_id] Stored %APPDATA%\Microsoft\UserSecrets\<user_secrets_id>\secrets.json Retrieve using var secret = Configuration[ key ] Not encrypted, development only!

24 Demo CLI: user-secrets

25 dotnet ef Manages EntityFramework stuff Build, change and deploy databases First, add the necessary packages: dotnet add package Microsoft.EntityFrameworkCore.Sqlite dotnet add package Microsoft.EntityFrameworkCore.Design Create POCO Create DbContext Override OnConfiguring(DbContextOptionsBuilder ob) dotnet ef migrations add [name] dotnet ef database update

26 Demo CLI: ef

27 Deployment

28 Deployment Roll forward: all apps automatically roll forward to the latest minor version installed on a system Two modes: Self contained Shared framework Publish self-contained by using: dotnet publish

29 API Changes

30 API Changes New: Span<T> (on the stack) Memory<T> (on the heap, can return a Span<T>) Brotli compression General-purpose lossless compression algorithm Supported by most browsers and servers Usage: System.IO.Compression.BrotliStream (stream-based) System.IO.Compression.BrotliEncoder (fast, span-based) System.IO.Compression.BrotliDecoder (fast, span-based) New Cryptography API s Socket Improvements

31 Demo Span<T>

32 SignalR Realtime bi-directional communication between server and clients

33 SignalR Enables real time communications from server to client Automatically picks the best transport: WebSockets, Server-side events, Long-polling Client management is build-in

34 SignalR in ASP.NET Core 2.1 No client-side dependency on jquery MessagePack-based binary protocol Base on Microsoft.AspNetCore.Sockets (instead of Http) Supports multiple formats

35 Demo SignalR, in two parts

36 What we ve seen History of.net New commands in.net Core new, watch, user-secrets, ef API changes Span<T>, Memory<T>, BrotliCompression, and so on SignalR in ASP.NET Core Running on Linux / Raspberry PI

37 Thank you!