Fixes dotnet#117709 — FileInfo methods that alter file system state now call Invalidate() so cached properties (Exists, Length, timestamps) are lazily refreshed on next access, matching the pattern already used by Create(), Delete(), and MoveTo(). Methods fixed (FileInfo.cs): - Open(FileStreamOptions) - Open(FileMode, FileAccess, FileShare) - OpenRead() - OpenWrite() - OpenText() - Replace(string, string?) - Encrypt() - Decrypt() - CreateAsHardLink(string) Comprehensive method audit across FileInfo, DirectoryInfo, FileSystemInfo: FileInfo — already correct (no change needed): Create(), Delete(), MoveTo(), CreateText(), AppendText(), CopyTo() (returns new obj), IsReadOnly setter (via Attributes) DirectoryInfo — already correct (no change needed): Create(), Delete(), Delete(bool), MoveTo() CreateSubdirectory() returns new obj, parent unchanged FileSystemInfo — already correct (no change needed): CreateAsSymbolicLink(), Attributes setter, CreationTime(Utc) setter, LastAccessTime(Utc) setter, LastWriteTime(Utc) setter, UnixFileMode setter, ResolveLinkTarget() (read-only) Read-only methods (no invalidation needed): GetFiles, GetDirectories, GetFileSystemInfos, Enumerate* Includes 12 regression tests in InvalidateOnStateChange.cs covering all fixed methods plus CreateText/AppendText (already worked). Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Commits

Commits on Feb 14, 2026

Add missing Invalidate() calls to FileInfo state-changing methods

Merge branch 'main' into fix/fileinfo-invalidate-consistency

Commits on Feb 15, 2026

Use ConditionalFact for CreateAsHardLink test to skip on unsupported filesystems

Merge branch 'main' into fix/fileinfo-invalidate-consistency