Eliminate Duplicate Values from the Grid View

Question

I have gridview with 5 columns. I want to show following result in gridview i.e no duplication of Appno,Type,Dept columns.

Appno	Type	Dept	First Name	Last Name
1	Java	HR	a	a
			b	s
			c	d
			d	f
			e	g
2	Android	IT	aa
			ss	yy
			dd	uu
			ff	uu
			gg	ii
3	.NET	Design	www	jjj
			eee	kkk
			rrr	mmm
4	PHP	Code	trtr	gfhgf
			fgfg	hgh
			gfgfg	hghgf
			bbvcb	bcvbcvb
5	SQL	Query	gff	bbvc
			gff	bcvbcv
			bcvb	bvcb
			vbvcb	vbcb
			vbcvb	bcbv
			bvbcv	vcbvb