Hi,

The AppStylistRunTime should not be crashing when you load another isl into memory. That seems like a bug to me. But I tried it out and I was unable to duplicate the exception.

Can you duplicate this in a small sample project and post it here so we can check it out?

To answer your question, the AppStylist run-time form is basically just a form Form like any other. So you can use the OwnedForms collection of your form to get a reference to the dialog and hook events on it.

The close button on this dialog just hides the window, it does not actually close it. So I recommend using the VisibleChanged event. So, for example, you could keep a flag that tells you whether the dialog is displayed like this:

        private void ShowAppStylistRuntTime()
        {
            this.appStylistRuntime1.ShowRuntimeApplicationStylingEditor(this, "AppStylist Runtime");
            this.OwnedForms[0].VisibleChanged += new EventHandler(Form1_VisibleChanged);
            this.isAppStylingRunTimeDisplayed = true;
        }

        void Form1_VisibleChanged(object sender, EventArgs e)
        {
            Form appstylistRunTimeForm = (Form)sender;
            appstylistRunTimeForm.VisibleChanged -= new EventHandler(Form1_VisibleChanged);
            this.isAppStylingRunTimeDisplayed = false;
        }