public OperationResult <IList <IUserDTO> > GetFilteredUsers(string userName, string userContact, string userEmail)
{
IUserBDC userBDC = (IUserBDC)BDCFactory.Instance.Create(BDCType.UserBDC);
return(userBDC.GetFilteredUsers(userName, userContact, userEmail));
//throw new NotImplementedException();
}