从datatable中得到重复数据，并显示

var query = from t in dtFin.AsEnumerable()

group t by new { t1 = t.Field<string>("保单号"), t2 = t.Field<string>("批单号"), t3 =t.Field<object>("保费金额") } into m

select new

{

amout = m.First().Field<object>("保费金额"),

pob = m.Key.t1,

pop = m.Key.t2,

rowcount = m.Count()

};

foreach (var q in query)

{

if (q.rowcount > 1)

{

Response.Write(q.amout+"出现多次！");//出现多次。

}

}