How to create report from two table in c#

Question

Hai,

I used reportviewer to display all test marks in particular student

Table: TestTable
StuId
BatchId
Testname
Mark
QualMark
Max Mark
Date

It displayed correct in reportviewer. But i want to display StuId, Batch Id, Course, BatchStartDate,BatchEndDate, Attendance from Batch Table.

It will display only once in report. But TestTable value displayed more records. 

How can i do?
Kindly help me.

Thanks in advance