Xamarin 115错误求助：新手误操作包依赖后编译失败

Hey there! Sorry to hear you're stuck with the Xamarin 115 error after messing around with packages—totally get how frustrating that can be when you're just starting out. Let's break down some targeted fixes that usually resolve this issue, since the standard reinstall/clean might not have hit all the hidden problem spots:

1. Wipe NuGet Caches and Local Package Folders #

• Open Visual Studio, go to Tools > NuGet Package Manager > Package Manager Settings
• Under NuGet Package Manager, select Clear All NuGet Cache(s) to remove any corrupted cached packages
• Manually delete the packages folder in your solution root, plus the obj and bin folders from every project in your solution (these often hold leftover build artifacts that cause conflicts)

2. Clean Up Residual References in Project Files #

Sometimes package uninstalls leave stray entries in your .csproj files:

• Right-click your project in Solution Explorer > Edit Project File
• Search for references to the package you uninstalled, and delete any leftover <PackageReference> or <HintPath> entries related to it
• Double-check that all your projects (shared, iOS, Android, etc.) have exactly the same version of Xamarin.Forms referenced—version mismatches are a common culprit for error 115

3. Reset Visual Studio's Component and Xamarin Caches #

Corrupted IDE caches can also trigger this error:

• Close Visual Studio completely
• Delete the ComponentModelCache folder: navigate to %LOCALAPPDATA%\Microsoft\VisualStudio\<Your VS Version>\ComponentModelCache (replace <Your VS Version> with something like 17.0_abc123)
• Delete temporary files in the Xamarin cache: go to %USERPROFILE%\AppData\Local\Xamarin and remove the zips and Android.Sdk folders (they'll be recreated automatically when you restart VS)

4. Force a Full NuGet Restore via CLI #

• Open Command Prompt or PowerShell, navigate to your solution's root directory
• Run the command: dotnet restore --force
• This forces NuGet to re-download all dependencies from scratch, bypassing any potentially corrupted local caches

5. Verify Android SDK Configuration (For Android Projects) #

If you're working with an Android project, mismatched SDK versions can cause error 115:

• Go to Tools > Android > Android SDK Manager
• Ensure your installed SDK Build Tools, Platform Tools, and Target SDK version match what's specified in your Android project's properties
• Update any outdated SDK components to the latest stable versions

If none of these steps fix the issue, could you share the full error message text (not just the code 115) and the name of the package you uninstalled? That would help narrow down the exact conflict.

内容的提问来源于stack exchange，提问作者khoi