Drop .NET9

Author: stefannikolei

.github/workflows/build-and-test.yml

@@ -90,31 +90,6 @@ jobs:
             runtime: -x64
             codecov: false
 
-          - os: ubuntu-latest
-            framework: net9.0
-            sdk: 9.0.x
-            sdk-preview: true
-            runtime: -x64
-            codecov: false
-          - os: macos-13 # macos-latest runs on arm64 runners where libgdiplus is unavailable
-            framework: net9.0
-            sdk: 9.0.x
-            sdk-preview: true
-            runtime: -x64
-            codecov: false
-          - os: windows-latest
-            framework: net9.0
-            sdk: 9.0.x
-            sdk-preview: true
-            runtime: -x64
-            codecov: false
-          - os: buildjet-4vcpu-ubuntu-2204-arm
-            framework: net9.0
-            sdk: 9.0.x
-            sdk-preview: true
-            runtime: -x64
-            codecov: false
-
           - os: ubuntu-latest
             framework: net8.0
             sdk: 8.0.x
@@ -195,9 +170,8 @@ jobs:
         uses: actions/setup-dotnet@v4
         with:
           dotnet-version: |
-            9.0.x
             10.0.x
-            
+
       - name: DotNet Build
         if: ${{ matrix.options.sdk-preview != true }}
         shell: pwsh

src/ImageSharp/ImageSharp.csproj

@@ -30,7 +30,7 @@
   <Choose>
     <When Condition="$(SIXLABORS_TESTING_PREVIEW) == true">
       <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net10.0</TargetFrameworks>
       </PropertyGroup>
     </When>
     <Otherwise>

tests/ImageSharp.Benchmarks/ImageSharp.Benchmarks.csproj

@@ -39,7 +39,7 @@
   <Choose>
     <When Condition="$(SIXLABORS_TESTING_PREVIEW) == true">
       <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net10.0</TargetFrameworks>
       </PropertyGroup>
     </When>
     <Otherwise>

tests/ImageSharp.Tests.ProfilingSandbox/ImageSharp.Tests.ProfilingSandbox.csproj

@@ -19,7 +19,7 @@
   <Choose>
     <When Condition="$(SIXLABORS_TESTING_PREVIEW) == true">
       <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net10.0</TargetFrameworks>
       </PropertyGroup>
     </When>
     <Otherwise>

tests/ImageSharp.Tests/ImageSharp.Tests.csproj

@@ -12,7 +12,7 @@
   <Choose>
     <When Condition="$(SIXLABORS_TESTING_PREVIEW) == true">
       <PropertyGroup>
-        <TargetFrameworks>net8.0;net9.0;net10.0</TargetFrameworks>
+        <TargetFrameworks>net8.0;net10.0</TargetFrameworks>
       </PropertyGroup>
     </When>
     <Otherwise>