What are the different ways Get the id of Particular row in Grid View? [Resolved]

protected void OnSelectedIndexChanged(object sender, EventArgs e)
{
    foreach (GridViewRow row in GridView1.Rows)
    {
        if (row.RowIndex == GridView1.SelectedIndex)
        {
            int index = GridView1.SelectedIndex ;
            break;
        }
    }
}

protected void Button1_Click(object sender, EventArgs e)
{
    int index = ((GridViewRow)((sender as Button)).NamingContainer).RowIndex;
}

protected void OnRowCommand(object sender, GridViewCommandEventArgs e)
{
    int index = Convert.ToInt32(e.CommandArgument);
    GridViewRow gvRow = GridView1.Rows[index]; 
}

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