Comparing a Class with a Base

[Guinness Mann]

If I have a class foo:

public class foo
{
string baseString;

public foo()
{
baseString = "";
}

public foo(string s)
{
baseString = s;
}

public static bool operator==(foo lhs, foo rhs)
{
return lhs.baseString == rhs.baseString;
}
}

And a derived class bar:

public class bar : foo
{
int x;

public bar()
{
x = 0;
}

public bar (string s, int y) : base(s)
{
x = y;
}

public static bool operator==(bar lhs, bar rhs)
{
// WHAT GOES IN HERE?
}
}

Do I have to do comparisons on both member variables? Or can I somehow
pass off the string part to foo to compare? What is the syntax?

Thanks,

-- Rick

[Mattias Sjögren]

Re: Comparing a Class with a Base

[color=blue]
> public static bool operator==(bar lhs, bar rhs)
> {
> // WHAT GOES IN HERE?
> }
>}
>
>Do I have to do comparisons on both member variables? Or can I somehow
>pass off the string part to foo to compare? What is the syntax?[/color]

You could do

return (foo)lhs == (foo)rhs && lhs.x == rhs.x;

if that's what you're looking for.



Mattias

--
Mattias Sjögren [MVP] mattias @ mvps.org

http://www.msjogren.net/dotnet/

Please reply only to the newsgroup.

[Guinness Mann]

Re: Comparing a Class with a Base

In article <eyLqQqyoDHA.20 12@TK2MSFTNGP12 .phx.gbl>,
mattias.dont.wa nt.spam@mvps.or g says...[color=blue]
>[color=green]
> > public static bool operator==(bar lhs, bar rhs)
> > {
> > // WHAT GOES IN HERE?
> > }[/color]
> You could do
>
> return (foo)lhs == (foo)rhs && lhs.x == rhs.x;
>[/color]

That's exactly what I was looking for, Mattias, thank you!

-- Rick