How to delete an IModelView

SOLIDWORKS API
1

When I open an IModelDoc2 invisibly, then call IModelDoc2.Extension.GetModelViews, I get returned Nothing/null.

When I make the model doc visible via IModelDoc2.Visible = true and call IModelDoc2.Extension.GetModelViews again, I now get an array with one entry of IModelView.

How do I delete that IModelView?


Reason:
I am trying to do some data modifications on model docs, and in order to be fast and hide it from the user, I open them invisibly. But some data is not available/changeable in invisible documents, so I need to make some model docs visible temporarily. But then they become visible to the user (i.e. they get their own window) and even stay that way after I call IModelDoc2.Visible = false.

My goal is to get a model doc back to being REALLY invisible to the user after I made it visible.

Here is some C# code where you can see what I tried:

if (!modelDoc.Visible)
{
	var views = (object[])modelDoc.Extension.GetModelViews(); // is null here

	modelDoc.Visible = true; // makes it visible to the user and creates a view
	modelDoc.Visible = false; // does NOT revert it to invisible!

	views = (object[])modelDoc.Extension.GetModelViews(); // is not null; contains one element (= the view generated when making it visible)

	modelDoc.NameView("foo"); // name the current view...
	modelDoc.DeleteNamedView("foo"); // ...then delete it

	views = (object[])modelDoc.Extension.GetModelViews(); // still contains one element; deleting did not work!
}

so naming then deleting does not work.

2

There was a nice thread about how to improve performance, but it was in the old SW forums and I cannot find it now. I commented the link, I don’t like links in comments because code lasts longer than URLs. Stupid me assumed since this was link to a site supported by a reputable company it would last or have useful redirect. Bad assumption.

        //to help performance per https://forum.solidworks.com/message/858283
        modelDoc.FeatureManager.EnableFeatureTree = false;
        modelDoc.FeatureManager.EnableFeatureTreeWindow = false;

IIRC Artem had some great tips of how to make SW behave better through the API and covered various cases. I did a little searching but not finding stuff specific to your case. Most useful links go to CodeStack, I’m guessing a little time searching there will prove to be worthwhile.

https://www.codestack.net/solidworks-api/