/// <summary>
        /// Delete function
        /// </summary>
        public void Delete()
        {
            PurchaseOrderBll BllPurchaseOrder = new PurchaseOrderBll();

            try
            {
                decimal decResult1 = 0;
                for (int inI = 0; inI < dgvPurchaseOrder.Rows.Count - 1; inI++)
                {
                    if (Convert.ToDecimal(dgvPurchaseOrder.Rows[inI].Cells["dgvtxtPurchaseOrderDetailsId"].Value) != 0)
                    {
                        decResult1 = BllPurchaseOrder.PurchaseOrderDetailsDelete(Convert.ToDecimal(dgvPurchaseOrder.Rows[inI].Cells["dgvtxtPurchaseOrderDetailsId"].Value));
                    }
                }
                decimal decResult2 = BllPurchaseOrder.PurchaseOrderMasterDelete(decPurchaseOrderMasterId);
                if (decResult1 > 0 && decResult2 > 0)
                {
                    Messages.DeletedMessage();
                    if (frmPurchaseOrderRegisterObj != null)
                    {
                        this.Close();
                        frmPurchaseOrderRegisterObj.GridFill();
                    }
                    if (frmPurchaseOrderReportObj != null)
                    {
                        this.Close();
                        frmPurchaseOrderReportObj.GridFill();
                    }
                    if (objVoucherSearch != null)
                    {
                        this.Close();
                        objVoucherSearch.GridFill();
                    }
                    if (frmDayBookObj != null)
                    {
                        this.Close();
                    }
                }
                else
                {
                    Messages.ReferenceExistsMessage();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("PO16:" + ex.Message, "OpenMiracle", MessageBoxButtons.OK, MessageBoxIcon.Information);
            }
        }