/// <summary>
        /// Saves the item policy
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void btnSave_Click(object sender, EventArgs e)
        {
            var itm = new Items();
            var itmSup = new ItemSupplier();
            if (_itemId != 0)
                itm.LoadByPrimaryKey(_itemId);
            else
            {
                itm.AddNew();
                var prodCate = new ProductsCategory();
                prodCate.AddNew();
                prodCate.ItemId = itm.ID;
                prodCate.SubCategoryID = Convert.ToInt32(_categoryId);
                prodCate.Save();
            }
            //if (rdA.Checked || rdB.Checked || rdC.Checked)
            //    itm.ABC = ((rdA.Checked) ? 1 : (rdB.Checked) ? 2 : 3);

            //if (rdV.Checked || rdE.Checked || rdN.Checked)
            //    itm.VEN = ((rdV.Checked) ? 1 : (rdE.Checked) ? 2 : 3);

                itm.IsInHospitalList = ckExculed.Checked;
                //itm.NeedExpiryBatch = chkNeedExpiryBatch.Checked;

            string valid = ValidateFields();
            if (valid == "true")
            {
                itm.NeedExpiryBatch = chkNeedExpiryBatch.Checked;
                itm.StockCodeDACA = txtText.Text;
                itm.Cost = txtQuantityPerPack.Text;
                itm.Save();
            }

            else
            {
                XtraMessageBox.Show(valid, "Validation", MessageBoxButtons.OK, MessageBoxIcon.Stop);
                return;
            }

            //TODO: To add categories
            //Needs some modification on edit

            // this will only add the suppliers
            //do some thing on edit

            itmSup.DeleteAllSupForItem(itm.ID);
            Supplier sup = new Supplier();
            foreach (object t in lstSuppliers.CheckedItems)
            {
                sup.GetSupplierByName(t.ToString());
                itmSup.AddNew();
                itmSup.ItemID = itm.ID;
                itmSup.SupplierID = sup.ID;
                itmSup.Save();
            }

            var progItm = new ProgramProduct();
            progItm.DeleteAllProgramsForItem(_itemId);

            var prog = new Programs();
            //prog.AddNew();
            //prog.Name = cboPrograms.Text;
            //prog.Save();

            foreach (object t in lstPrograms.CheckedItems)
            {
                prog.GetProgramByName(t.ToString());
                progItm.AddNew();
                progItm.ItemID = itm.ID;
                progItm.ProgramID = prog.ID;
                progItm.Save();
            }

            var duItem = new DUsItemList();
            var dus = new ReceivingUnits();

            foreach (object t in lstDUs.CheckedItems)
            {
                dus.GetDUByName(t.ToString());
                duItem.AddNew();
                duItem.DUID = dus.ID;
                duItem.ItemID = _itemId;
                try
                {
                    duItem.Save();
                }
                catch
                {

                }
            }

            XtraMessageBox.Show("Item Detail is Saved Successfully!", "Confirmation", MessageBoxButtons.OK, MessageBoxIcon.Information);
            this.Close();
        }
        /// <summary>
        /// Populates the fields based on the supplied itemID or categoryID
        /// </summary>
        private void PopulateFields()
        {
            if (_itemId == 0)
                return;

            Items itm = new Items();

            DataTable dtItem = itm.GetItemById(_itemId);
            txtItemName.Text = dtItem.Rows[0]["ItemName"].ToString() + " - " + dtItem.Rows[0]["DosageForm"].ToString() + " - " + dtItem.Rows[0]["Strength"].ToString();
            ckExculed.Checked =itm.IsInHospitalList;
            chkNeedExpiryBatch.Checked = itm.NeedExpiryBatch;
            txtText.Text = itm.StockCodeDACA ?? string.Empty;
            txtQuantityPerPack.Text = itm.Cost ?? string.Empty;

            try
            {
                if (dtItem.Rows[0]["ABC"].ToString() == "A")
                    rdA.Checked = true;
                else if (dtItem.Rows[0]["ABC"].ToString() == "B")
                    rdB.Checked = true;
                else if (dtItem.Rows[0]["ABC"].ToString() == "C")
                    rdC.Checked = true;
            }
            catch { }

            try
            {
                if (dtItem.Rows[0]["VEN"].ToString() == "V")
                    rdV.Checked = true;
                else if (dtItem.Rows[0]["VEN"].ToString() == "E")
                    rdE.Checked = true;
                else if (dtItem.Rows[0]["VEN"].ToString() == "N")
                    rdN.Checked = true;
            }
            catch { }

            //ItemShelf itmShelf = new ItemShelf();
            //DataTable dtSlf = itmShelf.GetLocationByItem(itm.ID);
            //lstBinLocation.DataSource = dtSlf;

            var unit = new ItemUnit();
            var itemunits= unit.LoadFromSQl(_itemId);
            itemunitbindingSource.DataSource = itemunits;

            if (VisibilitySetting.HandleUnits == 2)
            {
                listBox1.Visible = true;
            }
            else if(VisibilitySetting.HandleUnits == 3)
            {
                 listBox1.Visible = true;
            }
            else if(VisibilitySetting.HandleUnits == 1)
            {
                listBox1.Hide();
            }
            Supplier sup = new Supplier();
            sup.GetActiveSuppliers();

            ItemSupplier itmSup = new ItemSupplier();
            itm.GetItemsBySupplier(_itemId);
            foreach (DataRowView dv in sup.DefaultView)
            {
                bool check = false;
                check = itmSup.CheckIfExist(_itemId, Convert.ToInt32(dv["ID"]));
                object obj = dv["CompanyName"];
                lstSuppliers.Items.Add(obj, check);
            }

            Programs prog = new Programs();
            prog.GetSubPrograms();
            ProgramProduct progItem = new ProgramProduct();
            lstPrograms.Items.Clear();
            foreach (DataRowView dv in prog.DefaultView)
            {
                bool check = false;
                check = progItem.CheckIfExists(_itemId, Convert.ToInt32(dv["ID"]));
                lstPrograms.Items.Add(dv["Name"], check);
            }

            ReceivingUnits dus = new ReceivingUnits();
            dus.GetActiveDispensaries();
            lstDUs.Items.Clear();

            DUsItemList duItem = new DUsItemList();

            foreach (DataRowView drDus in dus.DefaultView)
            {
                bool check = false;
                check = duItem.CheckIfExsits(_itemId, Convert.ToInt32(drDus["ID"]));
                lstDUs.Items.Add(drDus["Name"], check);
            }
        }