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Salut .NET 5, quoi de neuf ?
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Cyril
December 10, 2020
Programming
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Salut .NET 5, quoi de neuf ?
Résumé des nouveautés dernières .NET 5, C# 9 et Visual Studio.
Cyril
December 10, 2020
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Transcript
10/12/2020 Salut .NET 5, quoi de neuf ?
Cyril CATHALA A propos ➔ .NET, Azure, Mobile ➔ Coach
Technique – SOAT ➔ MVP Developer Technologies @CyrilCathala in/cyrilcathala
[email protected]
3 .NET 5
Roadmap .NET Core 4
.NET 5 – Unification 5
.NET 5 6 ➔ Target framework > net5.0 : Crossplatform
> net5.0-windows : Forms, WPF, WinRT… > net6.0-ios, net6.0-android : Xamarin ➔ Performances+++ > gRPC, Arm64, JSON ➔ Support de Windows Arm64 ➔ System.Text.Json amélioré ➔ Extensions HttpClient pour JSON > GetFromJsonAsync<T>() ➔ Application single file
.NET 5 - Windows 7 ➔ Designer Windows Forms +
WPF ➔ Installeur ClickOnce ➔ Plus besoin d’avoir .NET Framework installé ➔ Contrôle moderne WebView2
ASP.NET Core 8 ➔ Model binding supporte les records ➔
OpenAPI (ex-Swagger) supporté par défaut ➔ SignalR Hub Filters > Middleware des hubs ➔ Blazor > Cf. Jérôme & Jonathan !
Entity Framework Core 9 ➔ Relations many-to-many ❤ ➔ Table-per-type
mapping ➔ Mapping d’une entity avec une query ➔ Interception du SaveChanges > SavingChanges, SavedChanges ➔ Include() avec filtre ➔ Amélioration des migrations > Transactions et exclusion de tables
10 C# 9
C# 9 – Init-only properties 11 ➔ Propriétés initialisables à
l’instanciation uniquement
C# 9 - Records 12 ➔ Classe immutable par défaut
➔ Support de l’héritage ➔ Implémentation automatique > Comparaison par valeurs > GetHashCode() > Copy / Clone > PrintMembers / ToString()
C# 9 - Records 13 ➔ Copie avec with ➔
Déclaration plus compacte : positional records > Deconstruct()
C# 9 - Top-level Programs 14
C# 9 - Patterns 15 ➔ Patterns logiques : and,
or, not ➔ Patterns relationnels : <, <=, >, >= ➔ Compatible avec tous les patterns : is, switch, case
C# 9 - new() 16 ➔ Omission du type quand
il est implicite
C# 9 - Source Generator 17 ➔ Génération de code
source (quelle surprise !) ⚠ Preview ⚠ ➔ Complément ou remplacement pour la reflection, modification d’IL, tâches MSBuild ou T4
18 Visual Studio
Visual Studio 2019 16.8 19 ➔ Support Git
Visual Studio 2019 16.8 20 ➔ Support Git ➔ .NET
Analyzers
Visual Studio 2019 16.8 21 ➔ Support Git ➔ .NET
Analyzers ➔ Aide sur les noms de paramètre et types
Visual Studio 2019 16.9 Preview 22 ➔ Point-virgule automatique
Visual Studio 2019 16.9 Preview 23 ➔ Point-virgule automatique ➔
Using automatique après une copie
Visual Studio 2019 16.9 Preview 24 ➔ Point-virgule automatique ➔
Using automatique après une copie ➔ Génération de propriété bindée
@CyrilCathala in/cyrilcathala
[email protected]
Merci !