Add Contact to Outlook using C#

1. add two COM Reference : Microsoft Office 12.0 Object Library, Microsoft Outlook 12.0 Object Library

add a outlook contact as follow:

using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using Microsoft.Office.Interop.Outlook;
using System.Reflection;

namespace SpringLiu
...{
    class Program
    ...{

        static void Main(string[] args)
        ...{

            Application outlookApp = new ApplicationClass();

            NameSpace mapiNameSpace = outlookApp.GetNamespace("MAPI");

            MAPIFolder mapiFolder = mapiNameSpace.GetDefaultFolder(OlDefaultFolders.olFolderContacts);

            ContactItem item = (ContactItem)mapiFolder.Items.Add("IPM.Contact.BCM.Contact");

            item.FirstName = "Spring";
            item.LastName = "Liu";
            item.Email1Address = "lianchun.liu@gmail.com";
            item.Email1AddressType = "SMTP";

            item.MobileTelephoneNumber = "1234567890";
            item.HomeTelephoneNumber = "12345678";
            item.IMAddress = "lianchun.liu@gmail.com";
            item.Email1DisplayName = "Spring Liu";
            
            item.Save();

        }

    }
}