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protected void Button1_Click(object sender, EventArgs e)
{
    GridViewRow gvr = (sender as Button).NamingContainer as GridViewRow; //»ñµÃÈÝÆ÷
    if(gvr != null)
    {
        int index = gvr.RowIndex;//index¾ÍÊÇËùµã»÷ÐеÄÐÐË÷Òý
    }
}
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