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Self-contained Windows build crashes on "Open Explorer": System.Diagnostics.Process not found

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
70/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Active
Tech stack
csharp
Domain
backend, desktop

Research direction

Start with ShellHelper.OpenFolder and the self-contained Windows publish configuration; the stack trace and missing System.Diagnostics.Process assembly point to that path. Compare the published dependencies with the code that launches Explorer, then verify the button opens the saved folder in a self-contained Windows build. The payload does not name a test file.

Written by the indexing model from the issue text.

Description

Bug
Steps to reproduce
  1. Downloaded ILSpy_windows_selfcontained_11.1.0.9782-x64.zip from the 11.1 release, unzipped it and ran ILSpy.exe
  2. Opened a .NET Framework 4.7.2 Windows Forms app (.exe) with File > Open
  3. Right-clicked it in the tree and chose Save Code, then picked a folder
  4. "Decompilation complete" appeared with an "Open Explorer" button. Clicked the button

Expected: File Explorer opens the folder the code was saved to.
Actual: An "ILSpy — unhandled exception" dialog appears. The code itself was saved correctly; only the Open Explorer button fails.

Error message shown
System.IO.FileNotFoundException: Could not load file or assembly 'System.Diagnostics.Process, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
File name: 'System.Diagnostics.Process, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
   at ICSharpCode.ILSpy.Util.ShellHelper.OpenFolder(String path)
   at ICSharpCode.ILSpy.Util.ShellHelper.OpenFolder(String path)
   at ICSharpCode.ILSpy.SmartTextOutputExtensions.<>c__DisplayClass1_0.<AddOpenFolderButton>b__0(Object _, RoutedEventArgs _)
   at Avalonia.Interactivity.EventRoute.RaiseEventImpl(RoutedEventArgs e)
   at Avalonia.Interactivity.EventRoute.RaiseEvent(Interactive source, RoutedEventArgs e)
   at Avalonia.Interactivity.Interactive.RaiseEvent(RoutedEventArgs e)
   at Avalonia.Controls.Button.OnClick()
   at Avalonia.Controls.Button.OnPointerReleased(PointerReleasedEventArgs e)
   at Avalonia.Reactive.LightweightObservableBase`1.PublishNext(T value)
   at Avalonia.Interactivity.EventRoute.RaiseEventImpl(RoutedEventArgs e)
   at Avalonia.Interactivity.EventRoute.RaiseEvent(Interactive source, RoutedEventArgs e)
   at Avalonia.Interactivity.Interactive.RaiseEvent(RoutedEventArgs e)
   at Avalonia.Input.MouseDevice.MouseUp(IMouseDevice device, UInt64 timestamp, IInputRoot root, Point p, PointerPointProperties props, KeyModifiers inputModifiers, IInputElement hitTest)
   at Avalonia.Input.MouseDevice.ProcessRawEvent(RawPointerEventArgs e)
   at Avalonia.Threading.Dispatcher.Send(SendOrPostCallback action, Object arg, Nullable`1 priority)
Image
Details
  • Product in use: ILSpy (self-contained Windows x64 zip)
  • Version in use: 11.1.0.9782
  • OS: Windows x64
  • System.Diagnostics.Process.dll present in the ILSpy folder: No
  • ILSpy.deps.json mentions System.Diagnostics.Process: No (so the publish itself seems to have left it out, not the zipping)
  • Possibly related: #4055 (same ShellHelper.OpenFolder code path, different failure)
  • Happy to help test a fix.
Dominant language
C#
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Merged PRs (30d)
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