在转发器中的会话变量中显示项目？

Question

我正在尝试将存储在会话变量中的项目放入转发器中，以供用户查看。 但是，我不完全确定该怎么做（我是会话变量的新手）。 基本上，当用户在点击提交的第一个页面上输入商品数量时，他们将被带到“订单摘要”页面，该页面将显示他们打算购买的商品。 我已经成功设置了一个会话变量，以包含用户选择的每种产品的sku和数量，但是我不知道如何获取信息。

我已将信息存储在会话变量中，分别为[sku]，[quantity]，[sku]，[quantity]，[sku]，[quantity]等。 我认为我必须根据逗号和分号进行拆分或其他操作，但是我不确定如何使用会话变量进行拆分。

产品清单页面的代码，其中包含要存储在会话变量中的信息：

public partial class GojoptproductlistSublayout : System.Web.UI.UserControl
{
    private void Page_Load(object sender, EventArgs e)
    {
        if(!Page.IsPostBack)
        {
            Item CurrentItem = Sitecore.Context.Item;

            Item HomeItem = ScHelper.FindAncestor(CurrentItem, "gojoMarket");

            if (HomeItem != null)
            {
                Item ProductGroup = HomeItem.Axes.SelectSingleItem(@"child::*[@@templatename='gojoMarketOfficeBuildigProductMap']/*[@@templatename='gojoProductList']");

                if (ProductGroup != null)
                {
                    Item[] LocationList = ProductGroup.Axes.SelectItems(@"child::*[@@templatename='gojoProductLocation' and @Active = '1']");
                    if (LocationList != null)
                    {
                        DataSet ds = new DataSet();
                        DataTable locations = ds.Tables.Add("locations");

                        locations.Columns.Add("LocationName", Type.GetType("System.String"));
                        locations.Columns.Add("LocationID", Type.GetType("System.String"));

                        foreach (Item LocationItem in LocationList)
                        {
                            DataRow dr = locations.NewRow();
                            dr["LocationName"] = LocationItem.Fields["Header"].Value;
                            dr["LocationID"] = LocationItem.ID.ToString();
                            locations.Rows.Add(dr);
                        }

                        locationRepeater.DataSource = ds;
                        locationRepeater.DataMember = "locations";
                        locationRepeater.DataBind();
                    }
                }
            }
        }
    }

    protected void SetInner(object sender, RepeaterItemEventArgs e)
    {
        if ((e.Item.ItemType != ListItemType.Footer) & (e.Item.ItemType != ListItemType.Header))
        {
            Label refID = (Label)e.Item.FindControl("refID");
            Label test = (Label)e.Item.FindControl("test");
            Repeater areaRepeater = (Repeater)e.Item.FindControl("areaRepeater");

            Database db = Sitecore.Context.Database;
            Item LocationAreaItem = db.Items[refID.Text];

            if (LocationAreaItem != null)
            {
                Item[] AreaList = LocationAreaItem.Axes.SelectItems(@"child::*[@@templatename='gojoProductLocationArea' and @Active = '1']");

                if (AreaList != null)
                {
                    DataSet dset = new DataSet();
                    DataTable areas = dset.Tables.Add("areas");

                    areas.Columns.Add("AreaName", Type.GetType("System.String"));
                    areas.Columns.Add("Sku", Type.GetType("System.String"));
                    areas.Columns.Add("ProductName", Type.GetType("System.String"));
                    areas.Columns.Add("masterSku", Type.GetType("System.String"));
                    areas.Columns.Add("masterName", Type.GetType("System.String"));
                    areas.Columns.Add("Size", Type.GetType("System.String"));
                    areas.Columns.Add("SkuID", Type.GetType("System.String"));
                    areas.Columns.Add("AreaID",Type.GetType("System.String"));
                    areas.Columns.Add("productID", Type.GetType("System.String"));

                    foreach (Item AreaItem in AreaList)
                    {
                        DataRow drow = areas.NewRow();

                        drow["AreaName"] = AreaItem.Fields["Header"].Value;
                        drow["AreaID"] = AreaItem.ID.ToString();

                        areas.Rows.Add(drow);

                        Item[] SkuList = AreaItem.Axes.SelectItems(@"child::*[(@@templatename='gojoPTRefill' or @@templatename = 'gojoPTAccessories' or  @@templatename = 'gojoPTDispenser' or @@templatename = 'gojoPTSelfDispensed') and @Active = '1']");

                        foreach (Item ChildItem in SkuList)
                        {
                            Item MarketProduct = db.Items[ChildItem.Fields["Reference SKU"].Value];
                            drow["productID"] = ChildItem.ID.ToString();

                            if (MarketProduct != null)
                            {
                                Item MasterProduct = db.Items[MarketProduct.Fields["Master Product"].Value];
                                if (MasterProduct != null)
                                {
                                    DataRow newRow = areas.NewRow();

                                    if(MasterProduct.TemplateName == "gojoSKUSelfDispensed" || MasterProduct.TemplateName == "gojoSKURefill")
                                    {
                                        newRow["Size"] = MasterProduct.Fields["Size"].Value;
                                    }
                                    else
                                    {
                                        newRow["Size"] = "-";
                                    }

                                    newRow["Sku"] = MasterProduct.Fields["SKU"].Value;
                                    newRow["productID"] = MasterProduct.ID.ToString();

                                    Item MasterProductName = db.Items[MasterProduct.Fields["Complete Product Name"].Value];

                                    if (MasterProductName != null)
                                    {
                                        newRow["ProductName"] = MasterProductName.Fields["Complete Name"].Value;

                                    }
                                    areas.Rows.Add(newRow);
                                }
                            }
                        }
                    }
                    areaRepeater.DataSource = dset;
                    areaRepeater.DataMember = "areas";
                    areaRepeater.DataBind();
                }

            }
        }
    }

    protected bool checkQtys(ref int ItemCnt, ref  ArrayList LinesToOrder)
    {
        Repeater locationRepeater = (Repeater)FindControl("locationRepeater");

        bool validQtys = true;
        string productID = "";
        int qty;
        qtyErrorMsg.Text = "";
        qtyErrorMsgTop.Text = "";
        foreach (RepeaterItem repItem in locationRepeater.Items)
        {
            if (repItem != null)
            {
                Repeater areaRepeater = (Repeater)repItem.FindControl("areaRepeater");
                if (areaRepeater != null)
                {
                    foreach (RepeaterItem skuItm in areaRepeater.Items)
                    {

                        if (skuItm != null)
                        {
                            Label SkuID = (Label)skuItm.FindControl("SkuID");
                            Label qtyID = (Label)skuItm.FindControl("qtyID");

                            PlaceHolder inner = (PlaceHolder)skuItm.FindControl("ProductTable");

                                if (inner != null)
                                {
                                    foreach (Control ct in inner.Controls)
                                    {
                                        if (ct is TextBox)
                                        {
                                            TextBox lineQty = (TextBox)ct;
                                            Label prodID = (Label)inner.FindControl("productID");

                                            if (lineQty.Text != "")
                                            {
                                                try
                                                {
                                                    int.Parse(lineQty.Text);
                                                    productID = prodID.Text;
                                                    qty = int.Parse(lineQty.Text);

                                                    if (qty > 0)
                                                    {
                                                        noItemMsg.Visible = false;
                                                        noItemMsgTop.Visible = false;
                                                        ItemCnt++; //only count items with valid qty values
                                                        LinesToOrder.Add(new LineItem(productID, qty));
                                                    }
                                                    else
                                                    {//Qty is 0 or less error
                                                        validQtys = false;
                                                        qtyErrorMsg.Text = "Quantity must be a number<br />";
                                                        qtyErrorMsgTop.Text = "Quantity must be a number<br />";
                                                    }

                                                }
                                                catch
                                                {//NaN - display error msg
                                                    validQtys = false;
                                                    qtyErrorMsg.Text = "Quantity must be a number<br />";
                                                    qtyErrorMsgTop.Text = "Quantity must be a number<br />";
                                                }
                                            }

                                        }

                                    }

                                }
                        }

                    }
                }

            }
        }
        return validQtys;
    }

    class LineItem
    {//This class will store the product information
        public string SKUID;
        public int Qty;

        public LineItem(string InSKUID, int InQty)
        {
            this.SKUID = InSKUID;
            this.Qty = InQty;
        }
    }

    protected void orderSubmit(object sender, EventArgs e)
    {
        int ItemCnt = 0;
        bool validQtys = true;
        ArrayList LinesToOrder = new ArrayList();
        Label lb = FindControl("order") as Label;

        if (checkQtys(ref ItemCnt,ref LinesToOrder))
        {
            if (ItemCnt == 0)
            {//make sure at least one item with proper qty amount is entered before submitting the order
                validQtys = false;
                noItemMsg.Visible = true;
                noItemMsg.Text = "You must order at least one item<br />";
                noItemMsgTop.Visible = true;
                noItemMsgTop.Text = "You must order at least one item<br />";
            }
            if (validQtys)
            {//save the information to a session variable and send users to order review page      
                try
                {
                    foreach (LineItem WorkLine in LinesToOrder)
                    {
                        lb.Text += WorkLine.SKUID + ", " + WorkLine.Qty + ";";
                    }

                    Session["orderComplete"] = lb.Text;
                }

                catch (Exception x)
                {
                    Response.Write(x.Message.ToString());
                }
                Response.Redirect("/united-states/market/office-buildings/obproductmap/OrderReview");

            }
        }
    }
}

这是带有转发器的设计器代码，用于保存订单摘要：

<asp:Repeater ID="orderRepeater" runat="server" >
    <headertemplate>
        <tr>
            <th>SKU</th>
            <th>Quantity</th>
        </tr>
    </headertemplate>
    <itemtemplate>
        <tr>
            <td><%#Eval("sku") %></td>
            <td><%#Eval("qty") %></td>
        </tr>
    </itemtemplate>
</asp:Repeater>

这是后面的代码：

private void Page_Load(object sender, EventArgs e) 
{
    Item CurrentItem = Sitecore.Context.Item;
    Item HomeItem = ScHelper.FindAncestor(CurrentItem, "gojoMarket");

    if (Session["orderComplete"] != "")
    {
        if (HomeItem != null)
        {
            Item ProductGroup = HomeItem.Axes.SelectSingleItem(@"child::*[@@templatename='gojoMarketOfficeBuildigProductMap']/*[@@templatename='gojoOrderReview']");

            if (ProductGroup != null)
            {
               //this is where I am confused on how to proceed


            }

        }
    }
}

一切正常，我对会话变量进行了Response.Write测试，以确保它具有正确的信息并且确实如此。

提前致谢！

Answer 1

在尝试解决您的问题之前，让我们看一些基本知识。 会话可以保存一个对象，而不仅仅是一个字符串对象。 我会改变：

 if (Session["orderComplete"] != "")

至

if (Session["orderComplete"] != null && Session["orderComplete"] != "")

如果您不这样做，并且Session["orderComplete"]为null，则Session["orderComplete"] != ""将抛出一个错误object not set to an instance of an object

现在是您的问题。 将会话变量设置为[sku],[quantity];[sku],[quantity];[sku],[quantity]并不是一个好主意。 对于它，它不是面向对象的，而对于2，它是不会绑定到任何转发器或数据源的。 您应该创建一个对象并将这些对象的列表绑定到控件：

伪代码：

class Program
{
 static void Main(string[] args)
 {
     List<Order> orders = new List<Order>();
     orders.Add(new Order { Sku = "ABC", Qty = 10});

 }
}

public class Order {

 public String Sku { get; set; }
 public int Qty { get; set; }

}

然后，您可以将orders绑定到中继器。 例如：

 if (Session["orderComplete"] != null && Session["orderComplete"] != ""){
     List<Order> orders = Session["orderComplete"] as List<Order>;
     myRepeater.DataSource = orders;
     myRepeater.DataBind();
 }