dotnet-core-3-wpf
A simple wpf application to demonstrate its functionality in .NET Core 3.0.
Kata requirements
For this kata there are two specific requirements: latest preview .NET Core 3.0 and latest preview VS 2019. It would be worth installing this before you attend the meetup - it takes around 40 mins.
Prereqs
.NET Core 3.0 (latest preview)
https://dotnet.microsoft.com/download/dotnet-core/3.0
Tuesday Sept 17th - For Windows you should have: dotnet-sdk-3.0.100-rc1-014190-win-x64
To test:
dotnet --version
VS 2019 (latest preview)
https://visualstudio.microsoft.com/vs/preview/
Community - unless you have a personal Visual Studio Professional or Enterprise license
Upgraded from 16.2.0 Preview 2.0
- Tuesday Sept 17th
- 16.3.0 Preview 4.0
Or for VS Code:
https://devblogs.microsoft.com/dotnet/announcing-net-core-3-preview-3/
A new preview C# extension update is available for VS Code that includes the latest C# compiler (aligned with .NET Core Preview 3 and Visual Studio 2019 Preview 4), which is required to use new C# 8.0 syntax. You need to download the extension and then install it as a VSIX in VS Code (VSIX install is in Extensions settings).
Kata steps
Master branch
The initial master branch simply is a blank WPF application, with a single Hello Worldbutton that does nothing.
Other brances
The other branches that have the naming convention of <stage_number>_<description_of_stage>, will be used to demostrate various interesting aspects of features in .NET Core 3.0
Create a WPF app
To create a WPF app you simply need to create a WPF App (.NET Core) project in VS 2019 Preview.
Create a console application
Using a console application to play around with nullable reference types.
Useful resources
What is it: https://docs.microsoft.com/en-us/dotnet/csharp/nullable-references Tutorial: https://docs.microsoft.com/en-us/dotnet/csharp/tutorials/nullable-reference-types
Enalbing nullable reference types
Add these two elements to the PropertyGroup of your .csproj file:
<LangVersion>8.0</LangVersion>
<Nullable>enable</Nullable>