datagridview - data gridview with arrow keys using vb.net -

in vb.net 2010:

i have 2 datagridviews on windows form.

when click on row of datagridview1, shows fetched result database in datagridview2.

so far working fine.

but when scroll through datagridview1 using arrow keys up/down, function doesn't work , error shown..

index out of range.

need know how select rows in datagriview1 using arrow keys , show result in second grid view.

thanks

use

   private void datagridview1_rowenter(object sender, datagridviewcelleventargs e)     {      }