[CONFIG] [Github Actions] Multiple .NET framework versions

Author: Gonzalo Diaz

.github/workflows/dotnet.yml

@@ -27,7 +27,12 @@ jobs:
       - name: Setup .NET
         uses: actions/setup-dotnet@v4
         with:
-          dotnet-version: 8.0.x
+          dotnet-version: |
+            8.0.x
+            9.0.x
+      - name: Tooling check
+        run: >
+          dotnet --version
       - name: Restore dependencies
         run: dotnet restore
       - name: Build

src/algorithm_exercises_csharp/algorithm_exercises_csharp.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net8.0;net9.0</TargetFramework>
     <RootNamespace>algorithm_exercises_csharp</RootNamespace>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>

src/algorithm_exercises_csharp_base/algorithm_exercises_csharp_base.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net8.0;net9.0</TargetFramework>
     <RootNamespace>algorithm_exercises_csharp</RootNamespace>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>

src/algorithm_exercises_csharp_test/algorithm_exercises_csharp_test.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net8.0</TargetFramework>
+    <TargetFramework>net8.0;net9.0</TargetFramework>
     <RootNamespace>algorithm_exercises_csharp_test</RootNamespace>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>