What is this .NET Core thing anyway?
by Rob Richardson
About Me
Rob Richardson is a software craftsman building web properties in ASP.NET and Node, Angular and React. He's a frequent speaker at conferences, user groups, and community events, and a diligent teacher and student of high quality software development. You can find this and other talks on https://robrich.org/presentations and follow him on twitter at @rob_rich.
.NET Core
.NET Core Features
- Single compile works cross platform
- Open source
- Lighter weight
- Remove legacy baggage
- Command-line tools
- bin-deployable framework
- Dependency Injection is baked in
.NET Core: didn't make the cut
- In-memory compiling
- project.json
- Write project file yourself
- Remove web.config
- Small NuGet packages
All these features are reversed
.NET Standard
.NET Classic
Source: http://andrewlock.net/understanding-net-core-netstandard-and-asp-net-core/
.NET Classic
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Source: http://andrewlock.net/understanding-net-core-netstandard-and-asp-net-core/
Portable Class Libraries
Source: http://andrewlock.net/understanding-net-core-netstandard-and-asp-net-core/
Portable Class Libraries
Each runtime is a fork
I must pre-select the runtimes I want
New runtime? I must recompile
.NET Standard
Source: http://andrewlock.net/understanding-net-core-netstandard-and-asp-net-core/
.NET Standard API Surface
.NET Standard (to scale)
.NET Standard 1.6 cheated
Each version is Superset
NuGet provides other things
.NET Standard
.NET Standard |
1.0 | 1.1 | 1.2 | 1.3 | 1.4 | 1.5 | 1.6 | 2.0 |
|---|---|---|---|---|---|---|---|---|
| .NET Core | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 1.0 | 2.0 |
| .NET Framework | 4.5 | 4.5 | 4.5.1 | 4.6 | 4.6.1 | 4.6.1 | 4.6.1 | 4.6.1 |
| Mono | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 4.6 | 5.4 |
| Xamarin.iOS | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.14 |
| Xamarin.Mac | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.8 |
| Xamarin.Android | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 7.0 | 8.0 |
| Universal Windows Platform | 10.0 | 10.0 | 10.0 | 10.0 | 10.0 | 10.0.16299 | 10.0.16299 | 10.0.16299 |
| Windows | 8.0 | 8.0 | 8.1 | |||||
| Windows Phone | 8.1 | 8.1 | 8.1 | |||||
| Windows Phone Silverlight | 8.0 |
Sources: http://andrewlock.net/understanding-net-core-netstandard-and-asp-net-core/
https://blogs.msdn.microsoft.com/dotnet/2016/09/26/introducing-net-standard/
https://github.com/dotnet/standard/blob/master/docs/versions.md
APIs: https://github.com/dotnet/corefx/blob/master/Documentation/architecture/net-platform-standard.md
.NET Standard
An evolution of PCL
Identifies a common feature set
for this version of .NET
in all environments
Detail: http://andrewlock.net/understanding-net-core-netstandard-and-asp-net-core/
Analogy (pseudocode): https://gist.github.com/davidfowl/8939f305567e1755412d6dc0b8baf1b7
.NET Core App
| .NET Standard | .NET Core | .NET Framework |
|---|---|---|
| Abstract API | Implementation for Windows, Mac, and Linux |
Implementation for Windows |
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.NET CLI
.NET CLI Demo
ASP.NET Core
Port of MVC onto .NET Standard
All the features you know and love
- Controllers
- Razor
- Action filters
- Web API
- SignalR
New ASP.NET Features
- Super-set of OWIN
- Self-hosted
or reverse-proxied from IIS - Web API rolled in
- Tag Helpers
- Bower and NPM
New ASP.NET Features
Inherited from .NET Core:
- Cross-platform
- Nano server
- Fast startup
- bin deployable framework
Not ported
- Web Forms
ASP.NET Core Demo
Entity Framework Core
New Entity Framework Features
- Much better defaults
- Supports much more databases
- ... including non-relational data stores
- Entity Framework Migrations
Not ported
- edmx
- Designer
.NET Core Data
... or bring your own data story through NuGet
.NET Core
Not ported
- Web Forms
- GDI+ (System.Drawing)
- Control libraries?
- Other dependencies?
Type Forwarding
.NET Core 2.0 depends on .NET Framework 4.x
.NET 4.7 depends on .NET Core 2.0
source: youtube.com/watch?v=vg6nR7hS2lI
Can I move to .NET Core?
- Do I need cross-platform or nano server?
- Are my dependencies ported?
- Am I ok with the pace of bleeding edge?
- Do I want to go fast?
Can I move to .NET Core?
Dependency checker: icanhasdot.net
Portability Analyzer: https://github.com/Microsoft/dotnet-apiport/blob/master/docs/VSExtension/README.md
Gotchas
Why are there less overloads?
The goal was a very small .net framework, so redundant overloads were removed
Which NuGet package do I load to get ...?
Class / Namespace to NuGet Package search: packagesearch.azurewebsites.net