e.DataRow(e.DataCol.Name) = DataTables("成绩表").Compute("Count(学号)",e.Datarow("科目") & " >= 60 And " & e.Datarow("科目") & " < 70 And [年级] = '" & e.Datarow("年级") & "' And [班级] = '" & e.Datarow("班级") & "'" )