public class order$\{$

public int order$-$id $\{$get; set;$\}$

public string order$-$name$\{$get; set;$\}$

public string order$-$type$\{$get; set;$\}$

public string order$-$discount$-$code$\{$get; set;$\}$

public string order$-$price$\{$get; set;$\}$

$\}$

rewrite the model class ageing by adding the following validation as describe in table : order$-$id must be hidden from users$($invisible

$)$