How to get the titles of all opened inspectors in outlook?

Question

C#, VSTO, Outlook 2016.

I want to get a list of the titles of all opened Inspectors in Outlook.

The first call of Outlook.Application.Inspectors[1].Caption returns "Message" as the inspectors caption. But the window-title of the inspector shows the subject of the email.

But when I open more inspectors then the caption seems to change.

So there is always one inspector in the collection without the emails subject and the Inspector.Caption doesn't match the coresponding window-title.

So how could I get a list of the right window-titles?

Coresponding code:

  private void ThisAddIn_Startup(object sender, System.EventArgs e)
  {
    m_Application = this.Application as Outlook.Application;
    m_Inspectors  = m_Application.Inspectors;

    m_Inspectors.NewInspector += new Outlook.InspectorsEvents_NewInspectorEventHandler(m_Inspectors_NewInspector);

    void m_Inspectors_NewInspector(Outlook.Inspector Inspector) {
      if (Application.Inspectors.Count > 0) {
        Debug.WriteLine("\n=== [Test] ================================");
        Debug.WriteLine($" Inspectors.Count: {Application.Inspectors.Count}");
        Debug.WriteLine(" Application.Inspectors: ");
        foreach (Outlook.Inspector CurrentInspector in Application.Inspectors) {
          Debug.WriteLine($"   {CurrentInspector.Caption}");
          Debug.WriteLine($"   --> {CurrentInspector.CurrentItem.Subject}");
        }
        Debug.WriteLine("===========================================\n");
      }
    }
  }

Answer 1

NewInspector事件处理程序可能为时过早 - 尝试连接Inspector.Activate事件：它在 Inspector 可见时触发。

Answer 2

Thank you Dmitry Streblechenko, this does the job:

For reference:

    private void ThisAddIn_Startup(object sender, System.EventArgs e)
    {
      Debug.WriteLine("[Test]: startet");

      // Variables
      m_Application = this.Application as Outlook.Application;
      m_Inspectors = m_Application.Inspectors;

      // Events
      m_Inspectors.NewInspector += new Outlook.InspectorsEvents_NewInspectorEventHandler(m_Inspectors_NewInspector);
    }

    void m_Inspectors_NewInspector(Outlook.Inspector Inspector) {
      Outlook.Inspector m_Inspector = Inspector;
      ((Outlook.InspectorEvents_Event) m_Inspector).Activate += new Outlook.InspectorEvents_ActivateEventHandler(m_Inspector_Activate);
    }

    void m_Inspector_Activate()
    {
      if (Application.Inspectors.Count > 0) {
        Debug.WriteLine("\n=== [Test] ================================");
        Debug.WriteLine($" Inspectors.Count: { Application.Inspectors.Count}");
        Debug.WriteLine($" Application.Inspectors: ");
        foreach (Outlook.Inspector CurrentInspector in Application.Inspectors) {
          Debug.WriteLine($"  {CurrentInspector.Caption}");
          Debug.WriteLine($"  --> {CurrentInspector.CurrentItem.Subject}");
        }
        Debug.WriteLine("===========================================\n");
      }
    }

But be aware of that the Activate-Event is called more often. So every time you change or close an Inspector-window the event is fired.