How to display different gridviews based on selected of rows from one gridview ?

I have my table like this:
Table 1: (ID is primary key)
ID................NAME
1..........................John
2..........................John
3..........................John
4..........................John

Table 2: (ID is foriegn key)
Tbl2_ID................Color..................ID(FK)
1...................................Yellow..........................1
2...................................Yellow..........................2
3...................................White............................2
4...................................Black.............................1
5...................................Orange........................3

<div>Now I am displaying select * from Table 1 in gridview 1</div> <div></div> <div>If a user select any row from gridview 1, anot ...