Lambda expressions and how to combine them?

Question

How can I combine two lambda expressions into one using an OR ?

I have tried the following but merging them requires me to pass parameters into the Expressio

Answer 1

Sound interesting ... I don't know much about lambda expression, but I found this article. Under PredicateBuilder Source Code is an example for or that works for me:

public static Expression> Or(
                      this Expression> expr1,
                      Expression> expr2 )
{
  var invExpr = Expression.Invoke( expr2, expr1.Parameters.Cast() );
  return Expression.Lambda>
      ( Expression.OrElse( expr1.Body, invExpr ), expr1.Parameters );
}