How to retrieve ID of selected object

[Anonymous]

My goal here is to get the ID of my selected object without using a prompt. For example, the user clicks on a rectangle in the drawing and then clicks on a button from my custom menu. I want to be able to retrieve the ID of this rectangle without getting prompted to pick it first.

Right now I'm trying to get the selection set using the PromptSelectionResult value, which asks me to choose the object.

I'm guessing there's an easy way of doing this but I can't seem to figure it out... Hopefully this makes sense?

[_gile · Accepted solution]

Hi,

If you want to get the pickfirst set content, the button event handler shoud call a cutom command with the Commandflags.UsePickFirst:

        [CommandMethod("foo", CommandFlags.UsePickSet)]
        public void Foo()
        {
            var ed = AcAp.DocumentManager.MdiActiveDocument.Editor;
            var selection = ed.SelectImplied();
            if (selection.Status == PromptStatus.OK)
            {
                if (selection.Value.Count == 1)
                {
                    var id = selection.Value[0].ObjectId;
                    AcAp.ShowAlertDialog(id.ObjectClass.Name);
                }
                else
                {
                    AcAp.ShowAlertDialog("More than one object in pickfirst set");
                }
            }
            else
            {
                AcAp.ShowAlertDialog("None pickfirst set");
            }
        }

[Anonymous]

Excellent! thank you very much. That worked great