protected void GetPurchaseOrderProductListById(string purchaseOrderId)
        {
            PurchaseOrderBLL purchaseOrder = new PurchaseOrderBLL();

            try
            {
                DataTable dt = purchaseOrder.GetPurchaseOrderProductListById(purchaseOrderId, prIDLabel.Text.Trim());

                if (dt.Rows.Count > 0)
                {
                    purchaseOrderProductListGridView.DataSource = dt;
                    purchaseOrderProductListGridView.DataBind();

                    if (purchaseOrderProductListGridView.Rows.Count > 0)
                    {
                        purchaseOrderProductListGridView.UseAccessibleHeader = true;
                        purchaseOrderProductListGridView.HeaderRow.TableSection = TableRowSection.TableHeader;
                    }
                }
                else
                {
                    msgbox.Visible = true; msgTitleLabel.Text = "Data Not Found!!!"; msgDetailLabel.Text = "";
                }
            }
            catch (Exception ex)
            {
                msgbox.Visible = true; msgTitleLabel.Text = "Exception!!!"; msgDetailLabel.Text = ex.Message;
            }
            finally
            {
                purchaseOrder = null;
            }
        }
        protected void purchaseOrderDetailsButton_Click(object sender, EventArgs e)
        {
            PurchaseOrderBLL purchaseOrder = new PurchaseOrderBLL();

            try
            {
                if (warehouseDropDownList.SelectedValue == "")
                {
                    msgbox.Visible = true; msgTitleLabel.Text = "Validation!!!"; msgDetailLabel.Text = "Warehouse Name field is required.";
                }
                else if (purchaseOrderIdTextBox.Text.Trim() == "")
                {
                    msgbox.Visible = true; msgTitleLabel.Text = "Validation!!!"; msgDetailLabel.Text = "Purchase Order ID field is required.";
                }
                else
                {
                    DataTable dt=new DataTable();

                    dt = purchaseOrder.GetPendingPurchaseOrderByIdAndWarehouse(purchaseOrderIdTextBox.Text.Trim(), warehouseDropDownList.SelectedValue.Trim());

                    if (dt.Rows.Count > 0)
                    {
                        prIDLabel.Text = dt.Rows[0]["PurchaseRequisitionId"].ToString();
                        prDateLabel.Text = ", " + dt.Rows[0]["PurchaseRequisitionDate"].ToString();
                        poIDLabel.Text = dt.Rows[0]["PurchaseOrderId"].ToString();
                        poDateLabel.Text = ", " + dt.Rows[0]["OrderDate"].ToString();
                        warehouseIdLabel.Text = dt.Rows[0]["WarehouseId"].ToString();
                        warehouseNameLabel.Text = dt.Rows[0]["WarehouseName"].ToString();
                        LoadVendors();
                        vendorDropDownList.SelectedValue = dt.Rows[0]["VendorId"].ToString();
                      
                        lblVendorID.Text = dt.Rows[0]["VendorId"].ToString();
                        //purchaseOrder.VendorId = dt.Rows[0]["VendorId"].ToString();
                        
                        // vendorNameLabel.Text = dt.Rows[0]["VendorName"].ToString();
                        requisitionNarrationLabel.Text = dt.Rows[0]["Narration"].ToString();

                        dt = purchaseOrder.GetPurchaseOrderProductListById(poIDLabel.Text.Trim(), prIDLabel.Text.Trim());
                        purchaseOrderProductListGridView.DataSource = dt;
                        purchaseOrderProductListGridView.DataBind();

                        for (int i = 0; i < dt.Rows.Count; i++)
                        {
                            TextBox purchaseQuantityTextBox = (TextBox)purchaseOrderProductListGridView.Rows[i].FindControl("purchaseQuantityTextBox");
                            purchaseQuantityTextBox.Text = dt.Rows[i]["Quantity"].ToString();
                        }

                        orderInfoContainer.Visible = true;
                        saveButton.Enabled = true;
                    }
                    else
                    {
                        orderInfoContainer.Visible = false;
                        saveButton.Enabled = false;
                        msgbox.Visible = true; msgTitleLabel.Text = "Data Not Found!!!"; msgDetailLabel.Text = "";
                    }

                    if (purchaseOrderProductListGridView.Rows.Count > 0)
                    {
                        purchaseOrderProductListGridView.UseAccessibleHeader = true;
                        purchaseOrderProductListGridView.HeaderRow.TableSection = TableRowSection.TableHeader;
                    }
                }
            }
            catch (Exception ex)
            {
                string message = ex.Message;
                if (ex.InnerException != null) { message += " --> " + ex.InnerException.Message; }
                MyAlertBox("ErrorAlert(\"" + ex.GetType() + "\", \"" + message + "\", \"\");");
            }
            finally
            {
                purchaseOrder = null;
            }
        }