Linq 有关问题

Linq 问题
 
int gcPersonCount = from c in dc.JT_ShengXuQKs where c.FB_ID == fID select ISNULL(c.SX_NaiNiu_Zong, 0) + ISNULL(c.SX_XiMenNiu_Zong, 0);
怎么不行呢


[解决办法]
int gcPersonCount = from c in dc.JT_ShengXuQKs where c.FB_ID == fID select new 
{
//...这里面操作
}