Xamarin.Forms项目编译报错：.csproj及其他问题求助

Hey there, let's tackle this frustrating compilation issue you're hitting after rearranging and deleting files in your Xamarin.Forms project. Since you've already tried the usual fixes like checking references, reloading projects, cleaning, and even migrating to a new project, let's dive into some deeper, often-overlooked checks:

• Audit your .csproj file manually
  When you move or delete files through the IDE, sometimes the project file doesn't update correctly. Open your project's .csproj file in a text editor and look for <Compile>, <EmbeddedResource>, or <None> entries pointing to files you've deleted or moved to a new path. Remove any invalid entries, and update paths for moved files to match their new folder structure.

• Manually delete bin/obj folders
  The IDE's "Clean Solution" might not clear all stale cache. Navigate to each project folder (shared, Android, iOS) and delete the bin and obj directories entirely. Then rebuild the solution from scratch—this eliminates any leftover compiled artifacts that might be causing path conflicts.

• Verify Build Action settings for moved files
  Moving files can sometimes reset their Build Action, which is critical for Xamarin.Forms. For example:

  • XAML pages should have EmbeddedResource set
  • Android image files need AndroidResource
  • iOS image files require BundleResource
    Right-click each moved file, check its Properties > Build Action, and correct if needed.

• Fix namespace mismatches
  When you move files into a new folder, the namespace declared in the file might no longer match the folder hierarchy. Double-check the namespace line at the top of each moved file, and update any references to those classes elsewhere in your project to use the new namespace.

• Resync NuGet packages across all projects
  File rearrangements can sometimes corrupt NuGet package references subtly. Uninstall all Xamarin-related NuGet packages (Xamarin.Forms, Xamarin.Essentials, etc.) from every project in your solution, then reinstall the exact same version across all projects. This ensures package consistency and fixes any broken reference links.

• Check for orphaned resource references
  If you deleted files that contained global styles, resource dictionaries, or static assets, other parts of your project might still be referencing them. Use your IDE's search function to look for references to the deleted filenames or resource keys—these orphaned references will throw compilation errors.

If none of these steps resolve the issue, sharing the exact error messages from your build output (including error codes and file paths) would help narrow down the problem further.

内容的提问来源于stack exchange，提问作者Thor Giversen