Data Controls :: Nested Child GridView Expand Collapse Using CheckBox

How to implement SubGrid inside Gridview dynamically using C#.

Idea is simple

Two tables are Master and Child

Table 1

id disease<--------id is primary key, disease is varchar

1 Cold
2 Fever

Table 2

id Tablet<--------id is foreign key referencing table1, Tablet is varchar

1 Amoxil
1 ColdAct
1 Cetzine
2 Crocin
2 Dolo650
2 P-650

I need generate first GridView with Checkboxfield for each row. If i checked the checkbox then dynamic subgrid will display again next row.