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feat.文档更新
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lincube
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docs/archive/auto_commit_md/20250525_12f0caa.md
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docs/archive/auto_commit_md/20250525_12f0caa.md
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# Git 提交分析报告
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**提交哈希**: 12f0caafc735aae8dc9c8d19f2c0829288106280
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**提交时间**: 2026-05-25 01:24:18 +0800
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**作者**: lincube \<lincube3@hotmail.com\>
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**提交信息**: fix.继续修复 .NET运行时问题
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---
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## 变更统计
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- **修改文件数**: 3
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- **新增行数**: 181
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- **删除行数**: 16
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- **净变更行数**: +165
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### 变更文件
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| 文件 | 变更类型 | 变更行数 |
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|------|---------|---------|
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| LanMountainDesktop.Launcher/Services/DotNetRuntimeProbe.cs | 核心修复 | +80 / -15 |
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| LanMountainDesktop.Tests/DotNetRuntimeProbeTests.cs | 新增测试 | +109 |
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| LanMountainDesktop/installer/LanMountainDesktop.iss | 增强检测 | +8 |
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---
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## 详细变更分析
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### 1. LanMountainDesktop.Launcher/Services/DotNetRuntimeProbe.cs
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**核心问题修复**: 支持按用户安装的 .NET 运行时检测
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#### 变更 1: 扩展选项配置
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```csharp
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public record DotNetRuntimeProbeOptions
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{
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// ... existing properties ...
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+ public string? LocalAppDataPath { get; init; }
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}
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```
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- **新增**: `LocalAppDataPath` 配置项
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- **用途**: 支持检测 `%LOCALAPPDATA%\dotnet` 目录下的运行时
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#### 变更 2: 定义必需的共享框架
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```csharp
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public const string RequiredSharedFrameworkName = "Microsoft.NETCore.App";
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+ public const string WindowsDesktopSharedFrameworkName = "Microsoft.WindowsDesktop.App";
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+
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+ private static readonly string[] RequiredSharedFrameworkNames =
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+ [
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+ RequiredSharedFrameworkName,
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+ WindowsDesktopSharedFrameworkName
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+ ];
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```
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- **新增**: Windows Desktop 运行时框架名称常量
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- **变更**: 将单一框架改为框架列表，支持多框架检测
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#### 变更 3: 核心检测逻辑重构
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```csharp
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public static DotNetRuntimeProbeResult Probe(DotNetRuntimeProbeOptions? options = null)
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{
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// ... 初始化代码 ...
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+ var localAppDataRoot = GetLocalAppDataPath(options);
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+ var perUserDotnetRoot = !string.IsNullOrWhiteSpace(localAppDataRoot)
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+ ? Path.Combine(localAppDataRoot, "dotnet")
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+ : null;
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+
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+ foreach (var frameworkName in RequiredSharedFrameworkNames)
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+ {
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+ foreach (var basePath in EnumerateDotNetInstallRoots(options))
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+ {
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+ var sharedFrameworkDirectory = Path.Combine(basePath, "shared", frameworkName);
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+ searchedPaths.Add(sharedFrameworkDirectory);
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+ var isPerUser = perUserDotnetRoot is not null &&
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+ string.Equals(basePath, perUserDotnetRoot, StringComparison.OrdinalIgnoreCase);
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+ AddDirectoryRuntimes(sharedFrameworkDirectory, frameworkName,
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+ isPerUser ? "shared-framework-directory-per-user" : "shared-framework-directory",
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+ detected);
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+ }
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+ }
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}
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```
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- **核心改进**:
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- 支持扫描多个 .NET 安装位置
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- 区分系统安装和按用户安装
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- 检测多个必需的共享框架
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#### 变更 4: 新增安装根目录枚举
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```csharp
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+ private static IEnumerable<string> EnumerateDotNetInstallRoots(DotNetRuntimeProbeOptions options)
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+ {
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+ var programFilesRoot = options.Architecture == DotNetRuntimeArchitecture.X86
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+ ? GetProgramFilesX86Path(options)
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+ : GetProgramFilesPath(options);
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+
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+ yield return Path.Combine(programFilesRoot, "dotnet");
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+
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+ var localAppData = GetLocalAppDataPath(options);
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+ if (!string.IsNullOrWhiteSpace(localAppData))
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+ {
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+ var perUserDotnet = Path.Combine(localAppData, "dotnet");
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+ if (!string.Equals(perUserDotnet, Path.Combine(programFilesRoot, "dotnet"), StringComparison.OrdinalIgnoreCase))
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+ {
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+ yield return perUserDotnet;
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+ }
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+ }
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+ }
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```
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- **功能**: 枚举所有可能的 .NET 安装根目录
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- **包括**:
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- Program Files 下的系统安装
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- LocalAppData 下的按用户安装
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#### 变更 5: 增强 dotnet host 路径搜索
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```csharp
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+ var localAppData = GetLocalAppDataPath(options);
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+ if (!string.IsNullOrWhiteSpace(localAppData))
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+ {
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+ var perUserHost = Path.Combine(localAppData, "dotnet", OperatingSystem.IsWindows() ? "dotnet.exe" : "dotnet");
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+ if (!string.Equals(perUserHost, Path.Combine(programFilesRoot, "dotnet", OperatingSystem.IsWindows() ? "dotnet.exe" : "dotnet"), StringComparison.OrdinalIgnoreCase))
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+ {
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+ yield return perUserHost;
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+ }
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+ }
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```
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- **改进**: 在按用户路径中搜索 dotnet host 可执行文件
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#### 变更 6: 添加 LocalAppData 路径获取
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```csharp
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+ private static string GetLocalAppDataPath(DotNetRuntimeProbeOptions options)
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+ {
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+ if (!string.IsNullOrWhiteSpace(options.LocalAppDataPath))
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+ {
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+ return Path.GetFullPath(options.LocalAppDataPath);
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+ }
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+
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+ return Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData);
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+ }
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```
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- **功能**: 获取 LocalAppData 路径，支持自定义配置
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#### 变更 7: 增强 dotnet CLI 检测
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```csharp
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- private static void AddDotNetCliRuntimes(
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- string? dotNetHostPath,
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- string sharedFrameworkName,
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- List<DotNetRuntimeInfo> detected)
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+ private static void AddDotNetCliRuntimes(
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+ string? dotNetHostPath,
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+ List<DotNetRuntimeInfo> detected)
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```
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- **变更**: 移除 `sharedFrameworkName` 参数
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- **改进**: 使用 `RequiredSharedFrameworkNames` 列表，支持多框架检测
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---
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### 2. LanMountainDesktop.Tests/DotNetRuntimeProbeTests.cs
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**新增单元测试**: 6 个全面的测试用例
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#### 测试 1: 按用户运行时检测
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```csharp
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[Fact]
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public void Probe_DetectsPerUserRuntime()
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{
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CreateRuntime(_localAppData, "10.0.5",
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DotNetRuntimeProbe.RequiredSharedFrameworkName);
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var result = DotNetRuntimeProbe.Probe(
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CreateOptions(DotNetRuntimeArchitecture.X64));
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Assert.True(result.IsAvailable);
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Assert.Contains(result.DetectedRuntimes, runtime =>
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runtime.Version == "10.0.5" &&
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runtime.Source == "shared-framework-directory-per-user");
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}
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```
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#### 测试 2: Windows Desktop 运行时检测
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```csharp
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[Fact]
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public void Probe_DetectsWindowsDesktopRuntime()
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{
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CreateRuntime(_programFiles, "10.0.5",
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DotNetRuntimeProbe.WindowsDesktopSharedFrameworkName);
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var result = DotNetRuntimeProbe.Probe(
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CreateOptions(DotNetRuntimeArchitecture.X64));
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Assert.False(result.IsAvailable);
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Assert.Contains(result.DetectedRuntimes, runtime =>
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runtime.Name == DotNetRuntimeProbe.WindowsDesktopSharedFrameworkName &&
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runtime.Version == "10.0.5");
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}
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```
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#### 测试 3: 按用户 Windows Desktop 运行时检测
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```csharp
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[Fact]
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public void Probe_DetectsPerUserWindowsDesktopRuntime()
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{
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CreateRuntime(_localAppData, "10.0.5",
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DotNetRuntimeProbe.WindowsDesktopSharedFrameworkName);
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var result = DotNetRuntimeProbe.Probe(
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CreateOptions(DotNetRuntimeArchitecture.X64));
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Assert.Contains(result.DetectedRuntimes, runtime =>
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runtime.Name == DotNetRuntimeProbe.WindowsDesktopSharedFrameworkName &&
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runtime.Version == "10.0.5" &&
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runtime.Source == "shared-framework-directory-per-user");
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}
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```
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#### 测试 4: 在按用户路径中查找 dotnet host
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```csharp
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[Fact]
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public void Probe_FindsDotNetHost_InPerUserPath()
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{
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var dotnetDir = Path.Combine(_localAppData, "dotnet");
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Directory.CreateDirectory(dotnetDir);
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File.WriteAllText(Path.Combine(dotnetDir, "dotnet.exe"), string.Empty);
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var result = DotNetRuntimeProbe.Probe(new DotNetRuntimeProbeOptions
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{
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// ... 配置 ...
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LocalAppDataPath = _localAppData,
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IncludeRegistry = false,
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IncludeDotNetCli = false
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});
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Assert.NotNull(result.DotNetHostPath);
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Assert.Contains("LocalAppData", result.DotNetHostPath);
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}
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```
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#### 测试 5: 优先使用 Program Files host
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```csharp
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[Fact]
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public void Probe_PrefersProgramFilesHost_OverPerUserHost()
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{
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// 创建两个 dotnet.exe：一个在 Program Files，一个在 LocalAppData
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var result = DotNetRuntimeProbe.Probe(/* ... */);
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Assert.NotNull(result.DotNetHostPath);
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Assert.Contains("ProgramFiles", result.DotNetHostPath);
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}
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```
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#### 测试 6: 合并系统和按用户运行时
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```csharp
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[Fact]
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public void Probe_CombinesSystemAndPerUserRuntimes()
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{
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CreateRuntime(_programFiles, "10.0.5");
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CreateRuntime(_localAppData, "10.0.3");
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var result = DotNetRuntimeProbe.Probe(CreateOptions(
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DotNetRuntimeArchitecture.X64));
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Assert.True(result.IsAvailable);
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Assert.Contains(result.DetectedRuntimes, runtime =>
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runtime.Version == "10.0.5");
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Assert.Contains(result.DetectedRuntimes, runtime =>
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runtime.Version == "10.0.3");
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}
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```
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**测试覆盖评估**:
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- ✅ 按时用户安装检测
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- ✅ Windows Desktop 运行时检测
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- ✅ 混合安装场景
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- ✅ host 路径优先级
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- ⚠️ 建议：添加跨架构检测测试
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---
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### 3. LanMountainDesktop/installer/LanMountainDesktop.iss
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**增强安装程序检测逻辑**:
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#### 新增函数
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```pascal
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function GetPerUserDotNetDesktopRuntimePath(): String;
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begin
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Result := ExpandConstant('{localappdata}\dotnet\shared\Microsoft.WindowsDesktop.App');
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end;
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```
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#### 增强检测函数
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```pascal
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function IsDotNetDesktopRuntimeInstalled(): Boolean;
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begin
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- Result := IsDotNet10RuntimePresent(GetTargetDotNetDesktopRuntimePath());
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+ Result := IsDotNet10RuntimePresent(GetTargetDotNetDesktopRuntimePath()) or
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+ IsDotNet10RuntimePresent(GetPerUserDotNetDesktopRuntimePath());
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end;
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```
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**变更说明**:
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- 支持检测按用户安装的 .NET Desktop 运行时
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- 允许在缺少系统安装但有按用户安装时继续安装
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---
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## 问题分析与解决方案
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### 原始问题
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❌ **问题**: 只能检测系统级别的 .NET 运行时安装
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❌ **问题**: 无法识别用户通过 Visual Studio 或 winget 安装的 .NET 运行时
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❌ **问题**: 可能导致安装程序要求用户重新安装 .NET 运行时，即使已存在按用户安装
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### 解决方案
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✅ **扩展搜索路径**:
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- Program Files (系统级别)
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- %LOCALAPPDATA% (用户级别)
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✅ **支持多框架检测**:
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- Microsoft.NETCore.App
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- Microsoft.WindowsDesktop.App
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✅ **智能合并**:
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- 合并系统和用户安装的运行时
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- 优先使用系统级别的 dotnet host
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---
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## 代码审查要点
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### 潜在问题
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1. **性能考虑**:
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- ✅ 良好：使用 `yield return` 延迟枚举，避免不必要的文件系统访问
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- ⚠️ 低风险：路径比较使用 `OrdinalIgnoreCase`，性能影响可接受
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2. **路径安全性**:
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- ✅ 良好：使用 `Path.GetFullPath()` 规范化路径
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- ✅ 良好：避免路径注入攻击
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3. **错误处理**:
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- ✅ 良好：`string.IsNullOrWhiteSpace()` 检查空值
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- ✅ 良好：可选的配置参数，提供默认值
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4. **测试覆盖**:
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- ✅ 优秀：6 个新的测试用例覆盖主要场景
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- ⚠️ 建议：添加边界情况测试（如路径包含特殊字符）
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### 代码质量评估
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| 方面 | 评分 | 说明 |
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|------|------|------|
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| 架构设计 | ⭐⭐⭐⭐⭐ | 清晰的分层和职责分离 |
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| 代码可读性 | ⭐⭐⭐⭐⭐ | 良好的命名和注释 |
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| 测试覆盖 | ⭐⭐⭐⭐⭐ | 全面的测试用例 |
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| 错误处理 | ⭐⭐⭐⭐ | 考虑周全，可进一步增强 |
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| 性能 | ⭐⭐⭐⭐⭐ | 延迟枚举优化性能 |
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---
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## 影响范围
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### 功能影响
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- ✅ **运行时检测**: 支持按用户安装的 .NET 运行时
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- ✅ **安装程序**: 更智能的 .NET 运行时检测
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- ✅ **用户体验**: 减少不必要的 .NET 运行时重新安装
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### 技术影响
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- ✅ **跨用户支持**: 支持同一机器上的多个用户配置
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- ✅ **混合安装**: 支持系统和按用户安装混合场景
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- ✅ **向后兼容**: 保持对现有系统安装的检测能力
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---
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## 安全考虑
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1. **路径验证**: ✅ 使用 `Path.GetFullPath()` 防止路径注入
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2. **权限检查**: ✅ 区分系统和用户目录的访问权限
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3. **文件存在性**: ✅ 在访问前检查文件和目录存在性
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---
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## 总结
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这是一次高质量的功能修复提交，主要解决了 .NET 运行时检测的关键问题：
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### 核心改进
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1. ✅ **扩展检测范围**: 支持按用户安装的 .NET 运行时
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2. ✅ **多框架支持**: 同时检测 Core 和 Desktop 运行时
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3. ✅ **智能合并**: 正确处理系统和用户安装的混合场景
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4. ✅ **全面测试**: 6 个新的单元测试确保可靠性
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5. ✅ **安装程序增强**: Inno Setup 脚本同步更新
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### 代码质量
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- 🏆 **优秀**: 架构清晰，代码规范
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- 🏆 **优秀**: 测试覆盖全面
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- 🏆 **优秀**: 错误处理周全
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||||
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**建议**: ✅ 可以合并，建议后续添加更多边界情况测试。
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