Thread t1 = new Thread(delegate() { ReadCard(dgv_record); });
t1.Start();

public static void RC(DataGridView dgv_record)
{
........
DAL.GetRecords(dgv_record);
}

Thread t1 = new Thread(delegate() {RC(dgv_record); });

dgv_record.Invoke((MethodInvoker)delegate
{
....
});