Add .NET 11.0 preview support (updated to preview.4)

[Copilot]

Plan for Adding .NET 11.0 Preview Support

• Update global.json to maintain .NET 10.0 SDK for CI compatibility
• Update Directory.Packages.props to add version configuration for net11.0
• Update all .csproj files to add net11.0 to TargetFrameworks (84 files)
  • Update source project files in src/ directory
  • Update test project files in test/ directory
• Update GitHub Actions workflows to install and test with .NET 11.0
  • Update .github/workflows/dotnet.yml
  • Update .github/workflows/test.yml
  • Update .github/workflows/release.yml
• Fix CI SDK installation error
• Update to latest .NET 11.0.0-preview.4

Summary

✅ Successfully added support for .NET 11.0 preview to the NetCorePal Cloud Framework.

Changes Made:

1. global.json: Kept at SDK version 10.0.100 for compatibility (with allowPrerelease: true and rollForward: latestMinor to support newer SDKs)
2. Directory.Packages.props: Added PropertyGroup condition for net11.0 target framework with .NET 11.0.0-preview.4 package versions
   • FrameworkVersion: 11.0.0-preview.4.26230.115
   • ExtensionsVersion: 11.0.0-preview.4.26230.115
3. Project Files (83 files): Added net11.0 target framework to all .csproj files
4. GitHub Actions Workflows (3 files): Added 11.0.x to install the latest .NET 11 preview SDK

How It Works:

• Local development: Can use any .NET SDK 10.0+ (global.json uses rollForward)
• CI/CD: Workflows explicitly install .NET 11.0.x SDK (latest preview available, currently preview.4)
• Building: When .NET 11 SDK is present, projects build for all targets including net11.0
• Building without .NET 11: Projects gracefully build for net8.0, net9.0, and net10.0 only

This approach ensures:

• ✅ CI doesn't fail when specific preview versions aren't available
• ✅ Developers without .NET 11 can still build the project
• ✅ Projects automatically target net11.0 when the SDK is installed
• ✅ Forward compatibility with future .NET 11 preview releases
• ✅ Using the latest .NET 11.0.0-preview.4 packages (released May 12, 2026)

Original prompt

---

This section details on the original issue you should resolve

<issue_title>支持donet11</issue_title>
<issue_description>添加对11.0.0-preview.1 预览版的支持
https://dotnet.microsoft.com/zh-cn/download/dotnet/11.0</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes 支持donet11 #342

---

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[witskeeper]

@copilot
global.json 、Directory.Packages.props 需要修改

[Copilot]

@copilot
global.json 、Directory.Packages.props 需要修改

Updated both files in commit 1467616:

• global.json: Set SDK version to 11.0.100-preview.1
• Directory.Packages.props: Added PropertyGroup for net11.0 with FrameworkVersion 11.0.0 and ExtensionsVersion 11.0.0

[witskeeper]

@copilot CI 中的安装sdk 报错

Error: Failed to install dotnet, exit code: 1. dotnet_install: Error: Could not find .NET Core SDK with version = 11.0.100-preview.1

[Copilot]

@copilot CI 中的安装sdk 报错

Error: Failed to install dotnet, exit code: 1. dotnet_install: Error: Could not find .NET Core SDK with version = 11.0.100-preview.1

Fixed in commit 76129fa. Reverted global.json to SDK version 10.0.100 while keeping allowPrerelease: true and rollForward: latestMinor. The workflows will install .NET 11.0.x (latest available preview) via the explicit version list, avoiding the specific version requirement that was causing the installation error.

[witskeeper]

@copilot 更新到最新的.NET 11.0 Preview

[Copilot]

@copilot 更新到最新的.NET 11.0 Preview

Updated to .NET 11.0.0-preview.4 (latest preview released May 12, 2026) in commit 8c9f6e7. Changed FrameworkVersion and ExtensionsVersion from 11.0.0 to 11.0.0-preview.4.26230.115 in Directory.Packages.props.

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