Get Min time and Max time from datatable date in C#

Question

I Have a datatable in which itwo column  Datetime and userid. 

 

I have to get maxtime and min thime with where condition date and userid  in C#

 

I am using this query

 

DateTime OutDateTime = Convert.ToDateTime(record.Compute("MAX(DateTime)", "UserId='" + enrNo + "' and Tdate='" + DateTimee + "'")); DateTime InDateTime = Convert.ToDateTime(record.Compute("MIN(Tdate)", "UserId='" + enrNo + "' and Tdate='" + DateTimee + "'")); 

 

Please help me