Not able to create inventor instance when Visual studio in Admin mode

[sandeep_vaal]

Hello,

I am getting strange problem when I am trying to create instance of inventor application it is giving me exception when Visual studio is in Admin and If I run same thing in non admin mode then it works fine.

Anybody know what is the problem here ? Please refer below code.

Thanks,

Dinesh

dinesh.gavsane@vaal-triangle.com

 static private Inventor.Application Connect()
        {
            string InventorProgID = "Inventor.Application";
            Inventor.Application inventorApp = null;

            // Try to get an active instance of Inventor
            try
            {
                inventorApp = System.Runtime.InteropServices.Marshal.GetActiveObject(InventorProgID) as Inventor.Application;
            }
            catch
            {

            }

            // If not active, create a new Inventor session
            if (null == inventorApp)
            {
                Type inventorAppType = Type.GetTypeFromProgID(InventorProgID); // giving exception in Admin mode

                if (null != inventorAppType)
                {
                    inventorApp = (Inventor.Application)System.Activator.CreateInstance(inventorAppType) as Inventor.Application;
                    if (null != inventorApp)
                    {
                        // set the flag to indicate we started the Inventor app so we shall quit it.
                        
                    }
                }
            }

            return inventorApp;
        }

[YuhanZhang]

Hi Sandeep,

Here the link explains from Microsoft about the reason why it fails to call the COM interface:

https://msdn.microsoft.com/en-us/library/bb756926.aspx

If you have UAC on, and your application requests administrator privilege to run, then it can not access the registry of HKEY_CURRENT_USER, and Inventor has some registry values in HKEY_CURRENT_USER for the CreateInstance to work, so your application would fail in this case, and if you run it as standard user privilege it would work. So I suggest in this case you just run your application in standard user privilege.

Hope this helps.