Get Contact information from outlook using C#

    
     private List  GetContacts(string findLastName)
        {
            List foundContacts  = new List();
            Outlook.Application outlookApp = new Outlook.ApplicationClass();        
           Outlook.MAPIFolder folderContacts = outlookApp.ActiveExplorer().Session.
                GetDefaultFolder(Outlook.OlDefaultFolders.olFolderContacts);
            Microsoft.Office.Interop.Outlook.Items searchFolder = folderContacts.Items;
          
            foreach (Microsoft.Office.Interop.Outlook.ContactItem foundContact in searchFolder)
            {
                if (foundContact.LastName.Contains(findLastName))
                {
                    foundContact.Display(false);
                    foundContacts.Add(foundContact);   
                }
            }


            return foundContacts;
        }