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]

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?

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]

In article <ey**************@TK2MSFTNGP12.phx.gbl>,
ma********************@mvps.org says...

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

You could do

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

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

-- Rick