private void AddContact()
{
    Outlook.Application outlookApp = new                 Outlook.Application();
    Outlook.ContactItem newContact = (Outlook.ContactItem)  outlookApp.CreateItem(OlItemType.olContactItem);
                        
    try
    {
        newContact.FirstName = "Sajid";
        newContact.LastName = "PK";
        newContact.Email1Address = "sajidpk@gmail.com";
        newContact.PrimaryTelephoneNumber = "91 9846710428";
        newContact.MailingAddressStreet = "123 AMRA.";
        newContact.MailingAddressCity = "kochi";
        newContact.MailingAddressState = "Keral";
        newContact.Save();
        newContact.Display(true);
    }
    catch
    {
        MessageBox.Show("The new contact was not saved.");
    }
}