public void UpdateEmp(DataGridView drv)
        {
            Datalayer d1 = new Datalayer();

            foreach (DataGridViewRow row in drv.Rows)
            {
                if (!row.IsNewRow)
                {
                    d1.UpdateEmp(row.Cells["SSN"].Value + "", row.Cells["Name"].Value + "", row.Cells["Username"].Value + "", row.Cells["Password"].Value + "", row.Cells["Email"].Value + "", row.Cells["Phone"].Value + "");
                    MessageBox.Show("Update Operation is Completed");
                }
            }
        }