My Outlook add-in code is breaking when attempting to save the command bar
position. Complete code for the add-in appears below. This is built in
Visual Studio 2008 for Outlook 2007.

Also, the Settings.settings properties are as follows:
CommandBarTop, int, 0
CommandBarLeft, int, 0
CommandBarVisible, bool, True
CommandBarPosition, 4
CommandBarRowIndex, 1

Everything works so far, except when the ThisAddIn_Shutdown() event calls
SaveCommandBarSettings(). Debugger shows that code fails when it hits
commandBar.Top.

Below are some error details. What's a little disturbing is that it appears
that a method which is internal to Microsoft Office is the point of failure.

Microsoft.Office.Core.CommandBar.get_Top()

Perhaps I need to repair Office (yet again). I repaired Office 2007
Ultimate once before when troubleshooting a completely different issue that
was caused by Visual Studio 2008 Power Tools.

=====================================

Exception from HRESULT: 0x800A01A8

System.Runtime.InteropServices.COMException was unhandled
Message="Exception from HRESULT: 0x800A01A8"
Source="office"
ErrorCode=-2146827864
StackTrace:
at Microsoft.Office.Core.CommandBar.get_Top()
InnerException:

=====================================

Any assistance would be appreciated. Again, the complete code is pasted
below so you can try to replicate the problem. Thanks for your help.

Ken

========================================

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using Outlook = Microsoft.Office.Interop.Outlook;
using Office = Microsoft.Office.Core;

namespace OutlookHW
{
/// summary
/// Adapted from the following:
/// http://msdn.microsoft.com/en-us/library/cc136646.aspx
/// http://msdn.microsoft.com/en-us/library/ms268891.aspx
/// /summary
/// remarks
/// 6/10/2008 - Ken Palmer - Created
/// /remarks
public partial class ThisAddIn
{
#region Hello World

// Create the command bar variables at the class level.
Office.CommandBar commandBar;
Office.CommandBarButton firstButton;
Office.CommandBarButton secondButton;

private void ThisAddIn_Startup(object sender, System.EventArgs e)
{
AddToolbar();
LoadCommandBarSettings();
}

private void ThisAddIn_Shutdown(object sender, System.EventArgs e)
{
SaveCommandBarSettings();
}

private void AddToolbar()
{

Outlook.Explorer myExplorer;
myExplorer = this.Application.ActiveExplorer();

try
{
commandBar = myExplorer.CommandBars["Test"];
}
catch (ArgumentException e)
{
// Toolbar named Test does not exist so we should create it.
}

if (commandBar == null)
{
// Add a commandbar named Test.
commandBar = myExplorer.CommandBars.Add("Test", 1, missing,
true);
}

try
{
// Add a button to the command bar and an event handler.
firstButton =
(Office.CommandBarButton)commandBar.Controls.Add(1 , missing, missing,
missing, missing);

firstButton.Style = Office.MsoButtonStyle.msoButtonCaption;
firstButton.Caption = "Hello";
firstButton.Tag = "btnHello";
firstButton.Click += new
Microsoft.Office.Core._CommandBarButtonEvents_Clic kEventHandler(firstButton_Click);

// Add a second button to the command bar and an event
handler.
secondButton =
(Office.CommandBarButton)commandBar.Controls.Add(1 , missing, missing,
missing, missing);

secondButton.Style = Office.MsoButtonStyle.msoButtonCaption;
secondButton.Caption = "World";
secondButton.Tag = "btnWorld";
secondButton.Click += new
Microsoft.Office.Core._CommandBarButtonEvents_Clic kEventHandler(secondButton_Click);

commandBar.Visible = true;
}
catch (ArgumentException e)
{
MessageBox.Show(e.Message);
}
}

void secondButton_Click(Microsoft.Office.Core.CommandBa rButton Ctrl,
ref bool CancelDefault)
{
MessageBox.Show("2nd button clicked: World");
}

void firstButton_Click(Microsoft.Office.Core.CommandBar Button Ctrl,
ref bool CancelDefault)
{
MessageBox.Show("1st button clicked: Hello");
}


#region Load Command Bar Settings

private void LoadCommandBarSettings()
{
Microsoft.Office.Core.MsoBarPosition position =
(Microsoft.Office.Core.MsoBarPosition)Properties.S ettings
.Default["CommandBarPosition"];

commandBar.Position = position;

int rowIndex =
Convert.ToInt32(Properties.Settings.Default["CommandBarRowIndex"]);
commandBar.RowIndex = rowIndex;

int top =
Convert.ToInt32(Properties.Settings.Default["CommandBarTop"]);
commandBar.Top = top != 0 ? top :
Screen.PrimaryScreen.Bounds.Height / 2;

int left =
Convert.ToInt32(Properties.Settings.Default["CommandBarLeft"]);
commandBar.Left = left != 0 ? left :
Screen.PrimaryScreen.Bounds.Width / 2;

bool visible =
Convert.ToBoolean(Properties.Settings.Default["CommandBarVisible"]);

commandBar.Visible = visible;
}

#endregion

private void SaveCommandBarSettings()
{
try
{
if (commandBar != null)
{
MessageBox.Show(commandBar.Top.ToString());
}

if (commandBar != null)
{
Properties.Settings.Default["CommandBarTop"] =
commandBar.Top;
}
Properties.Settings.Default["CommandBarLeft"] =
commandBar.Left;
Properties.Settings.Default["CommandBarVisible"] =
commandBar.Visible;
Properties.Settings.Default["CommandBarPosition"] =
(int)commandBar.Position;
Properties.Settings.Default["CommandBarRowIndex"] =
commandBar.RowIndex;
Properties.Settings.Default.Save();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}

#endregion

#region VSTO generated code

/// summary
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// /summary
private void InternalStartup()
{
this.Startup += new System.EventHandler(ThisAddIn_Startup);
this.Shutdown += new System.EventHandler(ThisAddIn_Shutdown);
}

#endregion
}
}

This is solved. McLean Schofield from Microsoft was able to point me in the
right direction at the following forum. The coded solution is posted there
as well.
http://forums.microsoft.com/MSDN/Sho...74456&SiteID=1