Simple Demo:
static void Main (string [] args)
{
Expression<Func<int, bool>> expr = x => x % 2 == 0;
Console.WriteLine (expr.Format ());
Console.WriteLine ();
var query =
from c in "The quick brown fox uses LINQPad".AsQueryable ()
where c != ' '
orderby c
select char.ToUpper (c);
Console.WriteLine (query.Expression.Format ());
}