select max and min value from a sequence from datatable using LINQ

Question

I am trying to get the Max value from a datatable using LINQ query.

var maxVal  =(from rowmax in datatable.AsEnumerable()
               where rowmax.Field<string>(column name A)=="1000"
               && rowmax.Field<string>(column name B)=="36"
              select rowmax.Field<string>(column name C)).Max();

I have the values in Column C like (154.93445, 142.05789,110.45632 and 94.34623 and so on) which are smaller than these numbers. But when I am doing above query for MAX i am getting 94.34623 but not 154.93445. I want to fetch the max number which is 154.93445.

Please suggest what I am doing wrong.

Answer 1

Max 是在字符串而不是数字上调用的，您需要进行某种从字符串到浮点类型的转换。