如何使用动态字符串参数执行OrderBy？

Question

我想做这个：

var orderBy = "Nome, Cognome desc";

var timb = time.Timbratures.Include("Anagrafica_Dipendente")

    .Where(p => p.CodDipendente == 1);

if(orderBy != "")

    timb = timb.OrderBy(orderBy);

是否有OrderBy可以接受字符串参数的重载？