How to get row data by clicking a button in a row in an ASP.NET gridview

Question

I have a GridView in a ASP.NET web application, in which I have added two buttons in each row:

Answer 1

 protected void btnS10_click(object sender, EventArgs e)
    {
        foreach (GridViewRow row in Grd.Rows)
        {
            CheckBox chk_Single = (CheckBox)row.FindControl("ChkSendOne");
            if (row.RowType == DataControlRowType.DataRow)
            {
                string id = (row.Cells[0].FindControl("lblSNo") as Label).Text;
                if (Convert.ToInt32(id) <= 10)
                {
                   
                    chk_Single.Checked = true;
                    if (chk_Single.Checked == true)
                    {
                        lblSelectedRecord.InnerText = (Convert.ToInt32(lblSelectedRecord.InnerText) + 1).ToString();
                    }
                }
            }
        }
    }