ActiveX OCXState Initialization in C# without Form

It sounds like you have an ActiveX control that needs a site in order to work properly.

What do you mean by 'a site', a graphical environment ?
Is there a way to verify this ? Or do you have a reference to a more thorough explanation about ActiveX/OcxState initialization ?

A site is a Form, a web page, or anything that can "host" an ActiveX control.

I don't quite understand what the exception is that you got when you didn't add the ActiveX control to a form.

I won't be able to get on my development computer again till tomorow, but it is something like this :
* I create an instance of the activex control and the first method call on that instance fails because the control is not in the 'correct' state.
* When I add it to the form, VS generates some code to 'initialize' the OcxState of the control. This code does some kind of request to the resources resx.

It would help to have more detail than that.  Working with ActiveX can be tricky, and information is king!!

Hello again,
The standard exception trace doesn't seem to provide a lot.

* If I just suppose I can instantiate the ActiveX control as a normal object, I do this :
MyAXClass myAxObject = new MyAxClass();
myAxObject.RandomMethodCall();

This throws an exception :
Cannot perform RandomMethodCall at this time.
Exception of type InvalidActiveXStateException was thrown.

* If I include it in a form via VS, this is the extra code which makes the first 'RandomMethodCall()' succeed :
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(MyOverviewControl));
((System.ComponentModel.ISupportInitialize)(this.m_myAxObject)).BeginInit();
this.m_myAxObject.ContainingControl = this;
this.m_myAxObject.Enabled = true;
this.m_myAxObject.Location = new System.Drawing.Point(1024, 48);
this.m_myAxObject.Name = "m_vaxsip";
this.m_myAxObject.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("m_myAxObject.OcxState")));
this.m_myAxObject.Size = new System.Drawing.Size(100, 50);
this.m_myAxObject.TabIndex = 6;
((System.ComponentModel.ISupportInitialize)(this.m_myAxObject)).EndInit();

So, should I conclude from this that it does need a site ?
The method calls I can perform on the object don't produce anything graphical, so I wondered why I would need a Form to  use it...

Great Idea, I'll do that.
Thanks.