Linq double与int类型转换问题，求解

[Nivs_k]

from a in
(from b in talbe1
select new
{
b.aa
})
group a by new { a.aa } into g
select new
{
Total = (Double)g.Sum(p => p.aa)
}
如上代码，但在p => p.SlMoney需要强制转换
备注：数据库表talbe1字段aa为float类型

[EnForGrass]

p.SlMoney需要强制转换 Convert.ToDouble(aa)

[Nivs_k]

在哪里强制转换，lamder表达式里面转换？

[q107770540]

from a in
 (from b in talbe1
 select b.aa)
 group a by  a.aa  into g
 select new
 {
 Total = g.Sum(p =>Convert.ToDouble(p.aa))
 }

[EnForGrass]

select new { Total = g.Sum(p => Convert.ToDouble(p.aa)) }

[人傻且呆但不萌]

加上这一句: select new { Total = g.Sum(p => Convert.ToDouble(p.aa)) }