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What’s New in .NET Core 3.0
Alexandre Malavasi

2.
About me
MCP | MCTS | MCPD | ITIL | .NET | MBA | MTAC |
Technical Leader | Consultant | .NET Developer
Medium.com/@alexandre.malavasi
LinkedIn.com/in/alexandremalavasi
Twitter.com/alemalavasi

3.
Agenda
• Difference between .NET 2.0 and .NET Core 3.0
• Performance improvements
• SignalR
• Endpoint routing for Web App
• Blazor and Razor Components

4.
Agenda
• In-box JSON Reader
• Async Streams
• Switch expressions and other new features in C# 8.0
• Entity Framework 3.0
• Http/2 support
• Self-contained EXEs

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What’s New in .NET Core 3.0

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Performance inprovements

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The Journey in .NET Core
.NET Core 1.0 2016/06/27
.NET Core 1.1 2016/11/16
.NET Core 2.0 2017/08/14
.NET Core 2.1 2018/05/30
.NET Core 3.0 2019/09/23

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.NET Core 2.0

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.NET Core 3.0

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Performance improvements

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Get Span (Read Only)

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Pin Span

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EndsWith

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Trim

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Reverse

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HtmlDecode

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Parse To Int 32

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Mod and other operations

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ToString

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Get Current Thread

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SignalR Improvements

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Automatic Reconnect - SignalR

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Automatic Reconnect - SignalR

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New Endpoints for Web App

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Blazor

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What is Microsoft Blazor?
• Single Page Application of .NET Platform
• Based on WebAssembly and not in Javascript
• Started as a open-source project and now it is
officially part of .NET Stack
• Quick improvements and updates since 2017

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• Single Page Application of .NET Platform
• Based on WebAssembly and not in Javascript
• Started as a open-source project and now it is
officially part of .NET Stack
• Quick improvements and updates since 2017
What is Microsoft Blazor?

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Blazor App

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Blazor App Template

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Blazor benefits
• Easy adoption by .NET developers
• Uncomplicated to learn
• All .NET resources already available
• Performance
• Compatible with all modern browsers
• Can be hosted in a very low cost service
• Re-use of code in client-side (validation, logic and
more)
• The client-side Blazor application works off-line

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New Features in C# 8.0

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HTTP/2 and New Features in C# 8.0
• Async Streams
• Switch expressions
• In-box Json Reader
• Span<T> improvements

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Entity Framework 3.0
• Smarter Linq Queries
• Improvements on Many to
Many
• Scaffold for Views
• Cosmos Db

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Self-contained EXE

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Self-contained EXE

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Questions

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Thank you !!!

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Contact Info
Medium.com/@alexandre.malavasi
LinkedIn.com/in/alexandremalavasi
Twitter.com/alemalavasi