public string ToStringFrontSide()
 {
     return($"BirthDate = {BirthDate.ToString()}\r\n" +
            $"DateCardValidEnds = {DateCardsValidEnds.ToString()}\r\n" +
            $"RegisterRecordNumber = {RegisterRecordNumber}\r\n" +
            $"IdCardNumber = {IdCardNumber}\r\n");
 }
 public override string ToString()
 {
     return($"ClientFirstName = {ClientFirstName}\r\n" +
            $"ClientLastName = {ClientLastName}\r\n" +
            $"ClientSex = {ClientSex}\r\n" +
            $"BirthDate = {BirthDate.ToString()}\r\n" +
            $"DateCardValidEnds = {DateCardsValidEnds.ToString()}\r\n" +
            $"RegisterRecordNumber = {RegisterRecordNumber}\r\n" +
            $"IdCardNumber = {IdCardNumber}\r\n" +
            $"PassportDeliveryBy = {PassportDeliveryBy}\r\n" +
            $"PassportDeliveryDate = {PassportDeliveryDate.ToString()}\r\n" +
            $"ClientInn = {ClientInn}");
 }