public ServiceResult InviteUser(Guid accountID, string userID)
 {
     ContactsServiceModel model = new ContactsServiceModel();
     OperateStatus status = model.InviteUser(accountID, userID);
     return new ServiceResult(status);
 }
 /// <summary>
 /// 邀请用户
 /// </summary>
 /// <param name="accountID">账号ID</param>
 /// <param name="userID">用户ID</param>
 /// <returns>操作结果</returns>
 public OperateStatus InviteUser(Guid accountID, string userID)
 {
     ContactsServiceModel model = new ContactsServiceModel();
     return model.InviteUser(accountID, userID);
 }