为何Visual Studio复制当前工作文件完整路径有时会全小写？

I’ve dealt with this exact Visual Studio quirk before, and it’s definitely a frustrating little annoyance—especially when you need the properly cased path for things like script execution or debugging. Let’s break down the most likely causes and solutions:

Common Causes & Fixes #

• Case-sensitive file system volumes
  Windows is generally case-insensitive, but if your project lives on a case-sensitive volume (like a WSL-mounted drive, an external drive formatted with a case-sensitive file system, or a Windows directory marked as case-sensitive), Visual Studio might pull the path in all lowercase. Double-check where the problematic file is stored; if it’s on such a volume, you can either adjust the volume’s case sensitivity settings or move the project to a standard NTFS drive.

• Corrupted Visual Studio cache
  VS sometimes caches file path data incorrectly. Try clearing its component cache to reset this:

  1. Close all running instances of Visual Studio
  2. Delete the contents of the folder: %LOCALAPPDATA%\Microsoft\VisualStudio\<your_VS_version>\ComponentModelCache
  3. Restart VS and test the "Copy full path" function again

• Incorrect project file references
  If the file was added to your project with a lowercase path reference (even by accident), VS might use that cached value instead of the actual file system path. Open your project file (e.g., .csproj, .vcxproj) in a text editor, search for the file’s entry, and ensure the path matches the exact case of the file on disk. Save the project file, reload it in VS, and try copying the path once more.

Quick Workarounds #

If none of the above fixes resolve the issue, these workarounds can get you the correct path quickly:

• Right-click the file in the Solution Explorer (instead of the open tab) and select "Copy full path"—this often pulls the properly cased path directly from the solution’s file references
• Open the file’s location in File Explorer, copy the path from the address bar, and append the filename with the correct case

Note: This isn't a coding or development issue, just a minor frustration when using the Visual Studio IDE. The problem occurs when right-clicking an open source file tab to select "Copy full path"—some specific files return a fully lowercase path, even though the actual file path uses proper casing.

内容的提问来源于stack exchange，提问作者David R Tribble