我正在尝试将Linq to XML查询的结果绑定到DataList控件,并且我无法返回所有子值。这是我的XML ......
<categories>
<category>
<parent-id>1234</parent-id>
<parent-name>Parent 1</parent-name>
<children>
<child-cat>
<child-id>5678</child-id>
<child-name>Child 1</child-name>
</child-cat>
<child-cat>
<child-id>2824</child-id>
<child-name>Child 2</child-name>
</child-cat>
<child-cat>
<child-id>2831</child-id>
<child-name>Child 3</child-name>
</child-cat>
</children>
</category>
<category>
<parent-id>6398</parent-id>
<parent-name>Parent 2</parent-name>
<children>
<child-cat>
<child-id>5564</child-id>
<child-name>Child 1</child-name>
</child-cat>
<child-cat>
<child-id>2824</child-id>
<child-name>Child 2</child-name>
</child-cat>
<child-cat>
<child-id>2831</child-id>
<child-name>Child 3</child-name>
</child-cat>
</children>
</category>
这是我的Linq查询...
var categories = XDocument.Load(Server.MapPath("/app_data/ShoppingCategories.xml"));
var allCats = from category in categories.Root.Descendants("category")
select new
{
parentId = category.Descendants("parent-id").First().Value,
parentName = category.Descendants("parent-name").First().Value,
childId = category.Descendants("child-cat").First().Value,
childName = category.Descendants("child-name").First().Value
};
dtlstCategories.DataSource = allCats;
dtlstCategories.DataBind();
我的输出看起来像这样(我只显示父名和子名字段,id字段被绑定到隐藏字段)...
父母1父母2 孩子1孩子2
因为我在子元素上使用.First(),我意识到这就是为什么只有第一个显示,但我似乎无法弄清楚如何让它们全部显示。这就是我追求的......
父母1父母2
儿童1儿童1
儿童2儿童2
孩子3孩子3
看起来我已经非常接近得到我想要的东西,但我无法将它们捆绑在一起。任何帮助表示赞赏!
修改
这是我的DataList ......
<asp:DataList ID="dtlstCategories" runat="server" OnItemDataBound="dtlstCategories_ItemDataBound" Visible="True" RepeatColumns="5" RepeatDirection="Vertical" RepeatLayout="Table" ItemStyle-Wrap="True" BorderWidth="0" ItemStyle-HorizontalAlign="Left" ItemStyle-VerticalAlign="Top" ItemStyle-Width="170">
<ItemTemplate>
<div style="padding-left:10px; padding-right:10px;">
<asp:HiddenField ID="hdnTopCategoryId" runat="server" Value='<%#DataBinder.Eval(Container.DataItem, "parentId") %>' />
<asp:LinkButton ID="lnkTopCategory" runat="server" CssClass="support" Text='<%#DataBinder.Eval(Container.DataItem, "parentName") %>'></asp:LinkButton>
<asp:Image ID="imgCatDivider" runat="server" />
<asp:HiddenField ID="hdnChildCatId" runat="server" Value='<%#DataBinder.Eval(Container.DataItem, "childId") %>' />
<asp:LinkButton ID="lnkChildName" runat="server" CssClass="support" Text='<%#DataBinder.Eval(Container.DataItem, "childName") %>'></asp:LinkButton>
</div>
</ItemTemplate>
</asp:DataList>
答案 0 :(得分:2)
我会写这样的东西
var allCats = categories.Descendants("child-cat")
.Select(c => new
{
parentId = c.Parent.Parent.Element("parent-id").Value,
parentName = c.Parent.Parent.Element("parent-name").Value,
childId = c.Element("child-id").Value,
childName = c.Element("child-name").Value
})
.ToList();