using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Outlook = Microsoft.Office.Interop.Outlook;

namespace testing1
{
    public partial class Form1 : Form
    {
        Outlook.Application oApp = new Outlook.Application();
        public Form1()
        {
            InitializeComponent();
        }
       private void Form1_Load(object sender, EventArgs e)
        {

      }
        private void FindContactEmailByName(string firstName, string lastName)
        {
            Outlook.NameSpace outlookNameSpace = oApp.GetNamespace("MAPI");
            Outlook.MAPIFolder contactsFolder = outlookNameSpace.GetDefaultFolder(Microsoft.Office.Interop.Outlook.OlDefaultFolders.olFolderContacts);
            Outlook.Items contactItems = contactsFolder.Items;
            try
            {
                Outlook.ContactItem contact = (Outlook.ContactItem)contactItems.Find(String.Format("[FirstName]='{0}' and " + "[LastName]='{1}'", firstName, lastName));
                if (contact != null)
                {
                    contact.Display(true);
                }
                else
                {
                    MessageBox.Show("The contact information was not found.");
                }
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        private void button1_Click(object sender, EventArgs e)
        {
            FindContactEmailByName("Tom", "Lee");
        }
    }
}