Nested Child GridView Expand Collapse using CheckBox in ASP.Net

Hi,

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.

Please suggest