DataView FilterRow problem

[MrNobody]

So far I've been using strings and ints in my DataTable so it was always easy
to use FilterRow expressions like "Column = 123" or "Column = 'abc'" but now
I have a situation where I need to have a custom class in DataTable. Now what
do have to do so that the FilterRow command will work with my custom data?

Let's say Column 1 is class Blah, which goes like this:

public class Blah {

int someValue = 50;

public override string ToString() {
return "Fifty";
}
}

So when I add this to my DataTable, the column prints "Fifty"- all good so
far.

But if I try to filter it I have no idea how.. I wanted to do something like :

FilterExpression = "Column1 = 50";

and then the code in the background would call the Equals method of my class
or maybe the "==" expression which I can overload, but apparantly it does
not. So how do I handle this?