VSTO - Importing Google contacts to Outlook 2007

For a long time I have been using Outlook to manage my contacts and appointments. I always synchronized my mobile phone with Outlook. After buying an Android device things have changed.
Now I use Google Contacts and Google Calendar to manage my contacts and appointments. Since I still use Outlook I need an easy way to synchronize Google with Outlook. Google provides GoogleCalendarSync to synchronize your calendar, but synchronizing contacts is only available for business customers.
In this post I will provide an Outlook addin which imports your Google contacts to Outlook.

Features

The addin imports Google contacts with the the following details:

• Name
• Addresses
• Emailaddresses
• Phonenumbers
• Website
• Instant Messengers
• Birthday/Anniversary
• Content
• Photo

After installing the addin a new button is placed in the default command bar, which lets you start the import:

Prerequisites

Before installing the addin make sure the following components are installed:

• Outlook 2007
• .NET Framework 4
• Microsoft Visual Studio 2010 Tools for Office Runtime

Source code

In addition to the source code I also provide a setup. The setup was created according to this manual.
The plugin may not work in the English version of Outlook, since I use the following code to get a reference to the main command bar:

var mainMenuBar = this.Application.ActiveExplorer().CommandBars["Standard"];

If you know a better approach, let me know.

Downloads

GoogleSync_Source.zip
GoogleSyncSetup.msi