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microsoft / CsWin32

A source generator to add a user-defined set of Win32 P/Invoke methods and supporting types to a C# project.

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CS8785 due to missing `System.Text.Encodings.Web` assembly in Dev16.11

oold opened this issue · comments

commented

Actual behavior

Building the project fails to generate the sources when a NativeMethods.json file exists.

The following warning is emitted:

CSC : warning CS8785: Generator 'SourceGenerator' failed to generate source. It will not contribute to the output and compilation errors may occur as a result. Exception was of type 'FileNotFoundException' with message 'Could not load file or assembly 'System.Text.Encodings.Web, Version=4.0.5.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51' or one of its dependencies. The system cannot find the file specified.'

Expected behavior

The sources are successfully generated during the build.

Repro steps

  1. NativeMethods.txt content:
CopyFileEx
CoTaskMemFree
ExtractIconEx
FileOpenDialog
FileSaveDialog
GetActiveWindow
GetModuleFileName
GetSystemWindowsDirectory
GetWindowLongPtr
HRESULT_FROM_WIN32
IFileDialog
IShellItem2
ITaskbarList3
SendMessage
SetWindowLongPtr
SHCreateItemFromParsingName
ShellExecuteEx
SHGetFileInfo
SHGetKnownFolderItem
SHGetStockIconInfo
SHOpenFolderAndSelectItems
SHParseDisplayName
StrCmpLogical
TaskbarList
TaskDialogIndirect

E_*
FOLDERID_*
ICON_*
MAX_PATH
MESSAGEBOX_RESULT
PBST_*
S_*
SEE_MASK_*
SHOW_WINDOW_CMD
TASKDIALOG_ELEMENTS
TASKDIALOG_MESSAGES
TD_*
WIN32_ERROR
WINDOW_EX_STYLE
WM_*
  1. NativeMethods.json content (if present):
{
  "$schema": "https://aka.ms/CsWin32.schema.json",
  "comInterop": {
    "preserveSigMethods": [
      "IFileDialogEvents"
    ]
  }
}
  1. Any of your own code that should be shared?

Context

  • CsWin32 version: 0.3.49-beta
  • Win32Metadata version (if explicitly set by project): 59.0.13-preview
  • Target Framework: net5.0-windows
  • LangVersion (if explicitly set by project): -
commented

Note: Your target framework (net5.0-windows) is no longer supported.

System.Text.Encodings.Web being missing suggests you're running on a compiler that's older than one we test with. What .NET SDK or VS version are you building with?

commented

Running on the latest VS 16 version.

commented

It works for me:

image

Can you send more repro details?

commented

Actually, I could repro it after filling in the Nativemethods text files like you described.