linq的一个常出现的问题

Question

PsProductDataContext db = new PsProductDataContext(); public List<PsProduct> StaticReport()        {            return (from c in db.PsProduct                   select c.ShCompanyName).ToList();        }这段代码系统报 无法将类型“system.collection .generic.list<string>隐士转换为system.collection .generic.list<qdrkProductMvc.Models.PsProduct>，我把代码改为  public IQueryable<PsProduct> StaticReport()        {            return from c in db.PsProduct                   select c.ShCompanyName;        }还是报相同的错，请高手指教；我用viewdata["ss"]=(... select c.ShCompanyName).ToList().在view中用foreach (List<Object> item in ViewData["ti"] as List<Object>)进行遍历，确报了未将对象运用到实例的错。迷糊。