Using Editor class in AutoCAD to execute commands

Question

I'm trying to create a button that, when pressed, marks the position of the drawing. Right now the method looks like this.

[CommandMethod("MARKPOS", CommandFlags.Session)]
public void MarkPosition()
{
    Editor ed = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
    ed.Command("UNDO", "M");
}

However, when I try and execute the method I get the error pictured below and cannot determine why.

enter image description here

************** Exception Text ************** Autodesk.AutoCAD.Runtime.Exception: eInvalidInput at Autodesk.AutoCAD.EditorInput.Editor.Command(Object[] parameter) at AutoCAD_Adapter.MyCommands.MarkPosition() in c:\Users\nickg\Documents\All Code\autocad-adapter\IOAutoCADHandler\myCommands.cs:line 186 at Autodesk.AutoCAD.Runtime.CommandClass.InvokeWorker(MethodInfo mi, Object commandObject, Boolean bLispFunction) at Autodesk.AutoCAD.Runtime.CommandClass.InvokeWorkerWithExceptionFilter(MethodInfo mi, Object commandObject, Boolean bLispFunction) at Autodesk.AutoCAD.Runtime.PerDocumentCommandClass.Invoke(MethodInfo mi, Boolean bLispFunction) at Autodesk.AutoCAD.Runtime.CommandClass.CommandThunk.Invoke()

See my comments to 'Augusto Goncalves'. He has the right answer, but to clarify, your eInvalidInput exception is the result of the context in which your CommandMethod is running. — bjhuffine
– bjhuffine, Commented May 6, 2015 at 12:01

Augusto Goncalves · Accepted Answer · 2015-04-29 12:46:40Z

1

The SendStringToExecute will work until AutoCAD 2014. On AutoCAD 2015 (and newer) this was replaced with Editor.Command or Editor.CommandAsync.

About the original code, please try with

[CommandMethod("MARKPOS")]
public static void MarkPosition()
{
  Editor ed = Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.Editor;
  ed.Command(new object[]{"UNDO", "M"});
}

answered Apr 29, 2015 at 12:46

Augusto Goncalves

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2 Comments

bjhuffine Over a year ago

Actually, SendStringToExecute() is still available in the 2015 API. I've used it and you can find it in AcCoreMgd.dll. But the problem 'Nick G' is having is that he is running this in the application context by adding the CommandFlags.Session enum to his CommandMethod attribute. Editor.Command() only works for the DocumentContext. Really, all he has to do to fix it is remove the Session enum and it will work.

Augusto Goncalves Over a year ago

That's correct, but the Editor.Command and CommandAsync is better as we have control (sync or async), that's why I suggested to replace.

Thomas Longnecker · Accepted Answer · 2018-03-23 20:27:06Z

1

You can't use the ed.command() when using CommandFlags.Session

answered Mar 23, 2018 at 20:27

Thomas Longnecker

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Comments

Graviton · Accepted Answer · 2024-11-18 08:07:27Z

1

Another idea that you can try is to

static void Invoke(Action action)
{
   var docmgr = Application.DocumentManager;
   if(docmgr.IsApplicationContext)
   {
      docmgr.ExecuteInCommandContextAsync(unused =>
      {
         action();
         return Task.CompletedTask;
      }, null);
   }
   else
   {
      action();
   }
}

This is how you call:

Invoke(() => YourMethod());

As per here.

answered Nov 18, 2024 at 8:07

Graviton

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Comments

Mathias Müller · Accepted Answer · 2015-04-15 17:40:35Z

0

Use this:

Autodesk.AutoCAD.ApplicationServices.Application.DocumentManager.MdiActiveDocument.SendStringToExecute

edited Apr 15, 2015 at 17:40

Mathias Müller

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answered Apr 15, 2015 at 16:50

Scott Rea

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3 Comments

Kyeotic Over a year ago

Putting this code in context would improve the answer

Nick Gilbert Over a year ago

The method is synchronous. It waits until the end of the C# method to send the string which is after when I need the command to execute

bjhuffine Over a year ago

@Nick G: You may not have meant it this way, but SendStringToExecute() is Asynchronous. From the AutoCAD .NET Developer's Guide: "Commands executed with SendStringToExecute are asynchronous and are not invoked until the .NET command has ended"

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