Forge error if using SendStringtoExecute (Command ^C^C) - autodesk-forge

Question

Actually, the error doesn't raise if I just run (Command ^C^C) from a lisp script.
The case is, my app is a .NET app, and I call some SendStringToExecute to use some lisp code.
To be sure to end the lisp routine, I put at the end:
doc.SendStringToExecute("(Command ^C^C)", True, False, True)
The result of Forge Design Automation is: failedinstruction
Though I can easily find another way to get around this, it cost me more than a day to figure out that it was the (Command ^C^C) cause the failedinstruction, while everything else was working fine.
Hope this bug will be fixed as well as anything similar won't raise up again somewhere else.
I isolate the case like this:
Make a .NET bundle, or just reuse any of your existing one in debug mode
Add the following lisp define function (or it can be a custom command, whatever):
<LispFunction("l+SendStringToExecute")>
Public Shared Function lsp_SendStringToExcute(args As ResultBuffer) As Object
Dim script$ = Nothing
For Each arg As TypedValue In args.AsArray
script = arg.Value
Exit For
Next
script = script.Trim()
If script <> "" Then
Document doc =
AcadApplication.DocumentManager.MdiActiveDocument
doc.SendStringToExecute(script + vbCr, True, False, True)
End If
Return New TypedValue(LispDataType.T_atom)
End Function
Upload the bundle to Forge, create a dump activity and just run the custom lisp solely:
(l+SendStringToExecute "(Command ^C^C)")
The result log is here like this:
...
[02/01/2021 17:23:26] Command: (l+SendStringToExecute "(Command ^C^C)")
[02/01/2021 17:23:26] T
[02/01/2021 17:23:26] Command: (Command ^C^C)
[02/01/2021 17:23:26] *Cancel*
[02/01/2021 17:23:26] Command: nil
[02/01/2021 17:23:27] End AutoCAD Core Engine standard output dump.
[02/01/2021 17:23:27] Error: AutoCAD Core Console failed to finish the script - an unexpected input is encountered.
[02/01/2021 17:23:27] End script phase.
[02/01/2021 17:23:27] Error: An unexpected error happened during phase CoreEngineExecution of job.
[02/01/2021 17:23:27] Job finished with result FailedExecution
[02/01/2021 17:23:27] Job Status:
{
"status": "failedInstructions", ...

Answer 1

Thanks for reporting, I'm not sure if we allow command expression in accoreconsole.
The suggestion is to use following way.
[CommandMethod("CANCELOUTSTANDING")]
public void TESTCANCEL()
{
var doc = Application.DocumentManager.MdiActiveDocument;
string cmd = string.Format("{0}", new string((char)03, 2));
doc.SendStringToExecute(cmd, true, false, true);
}