topic Re: Get instance AutoCAD with c# in .NET Forum

Get instance AutoCAD with c#

Anonymous — Wed, 30 Nov 2005 10:00:14 GMT

Hello,

In order to create a AutoCAD instance with c# is necessary this source code:

private Autodesk.AutoCAD.Interop.AcadApplicationClass _app = new Autodesk.AutoCAD.Interop.AcadApplicationClass();

Is it possible get an existing instance of AutoCAD with c#?

thanx

Re: Get instance AutoCAD with c#

Anonymous — Thu, 08 Dec 2005 22:02:18 GMT

System.Runtime.InteropServices.Marshal.GetActiveObject()
--
Bobby C. Jones
http://www.acadx.com

wrote in message news:5025254@discussion.autodesk.com...
Hello,

In order to create a AutoCAD instance with c# is necessary this source code:

private Autodesk.AutoCAD.Interop.AcadApplicationClass _app = new
Autodesk.AutoCAD.Interop.AcadApplicationClass();

Is it possible get an existing instance of AutoCAD with c#?

thanx

Re: Get instance AutoCAD with c#

Anonymous — Mon, 20 Feb 2006 20:27:49 GMT

You can start acad as a process by:

Process myProcess = new Process();
myProcess.StartInfo.FileName = acadFilePath + "acad.exe";
myProcess.StartInfo.WindowStyle = myProcessssWindowStyle.Hidden;
myProcess.Start();
object obj = null;
obj = Marshal.GetActiveObject("AutoCAD.Application");

obj now points to an autocad object

or if you want to get the process:
System.Diagnostics.Process [] p = Process.GetProcessesByName("acad");

hope this helps

Re: Get instance AutoCAD with c#

jbooth — Tue, 21 Feb 2006 00:21:51 GMT

This is just something on the side, but you CAN call some of those custom methods that VB programmers are so used to (in C#). You do so by using the Microsoft.VisualBasic namespace.

For example: you can get the Autocad application object by using
Microsoft.VisualBasic.Interaction.GetObject("", "AutoCAD.Application");

However. the solution posted previously is more correct, since that's what the Marshal class is for. This is just FYI.

Re: Get instance AutoCAD with c#

Anonymous — Fri, 15 Aug 2008 15:31:29 GMT

Hello everybody,

I used something similar to run a #net code called by an icon. That mean I need to find the existing AcadProcess and not open an new Acad instance.
But I have a problem: If different instances of Acad are opened, it always find the first Acad instance. What I try to do is finding the calling Acad instance, what's the instance where click the icon.
But how to do ?

Thanks for code, help or advices,
Jean-Marc

PS: I'm under AcadMap2004.