I've this linq to devforce expression :

(from r in mgr.testTables select r).OrderBy(r => r.id);

I want to specify sorting column name as a string, I need something like this :

***string orderBy = "r => r.id";***  

(from r in mgr.testTables select r).OrderBy( ***orderBy*** );

is there any way to parse a string as linq expression ?