Hi Rafia,

As for the GridView's SelectedIndex,  you can set it programmatically in
your code, however, you also need to call "DataBind" method on GridView so
as to make it repopulate the Rows item collection to reflect the change.
Thus, "RowDataBound" is not the proper place to set this property. here is
a web article which provide some information about set GridView selectedRow
based on key in datasource:

#GridView selection by key
http://www.codeproject.com/KB/aspnet/GridViewSelector.aspx

Sincerely,

Steven Cheng

Microsoft MSDN Online Support Lead

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