问下:linq to entity 里面 select 动态字段名怎么写?谢谢
string groupCol = lbChoosen.Items[0].Text;
var group1 = list.GroupBy(p => p.GetType().GetProperty(groupCol))
.Select(g => new { 想用groupCol动态字段名 = g.Key, Sum = g.Sum(s => s.Amount) })
.ToList();