Field in a Gridview

hi,

 I have a gridview where I need to create  a field. field should be like menu and sub-menu.

  like                       101
                        ex   se  tot

here  101 is header field.  and  ex,se and tot are sub-fields and in these three sub-fields, data should be retreived from database..

Subject Code	Marks Awarded			Remarks
	End Exam	Sessional	Total
101	37	11	48	*
102	03	08	11	F
103	06	12	18	F
104	44	16	60	*

requirement is same as above marks awarded and end exam .....

I couldn't find what field should be used for this type of requirement.

please help me.