如何将 ASP.net ajax AccordionPane 绑定到 XMLDatasource？

发布于 2024-07-06 05:23:58 字数 127 浏览 6 评论 0原文

我有一个愤怒的老板，如果我在这上面再浪费一天，他就会打我:-P 许多业力都指向 ajax 大师，他可以解决我的困境。

但更详细的是：我想要一个 AccordionPane，它从 XML 源获取一堆链接并从所述源填充自身。

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长梦不多时 2024-07-13 05:23:58

可能有更性感的方式，但这行得通。按照您的意愿填充您的数据源。这仅用于演示目的。 PrettyTitle() 也是如此，关键是要记住手风琴中有两种项目类型。

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Accordion Binding</title>
</head>
<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="AjaxScriptManager" runat="server">
    </asp:ScriptManager>
    <div>
        <cc1:Accordion ID="AccordionControl" runat="server" 
            onitemdatabound="AccordionControl_ItemDataBound">
            <Panes></Panes>
            <HeaderTemplate>
                <asp:Label ID="HeaderLabel" runat="server" />
            </HeaderTemplate>
            <ContentTemplate>
                <asp:Literal ID="ContentLiteral" runat="server" />
                <asp:HyperLink ID="ContentLink" runat="server" />
            </ContentTemplate>
        </cc1:Accordion><asp:xmldatasource runat="server" ID="RockNUGTwitter" ></asp:xmldatasource>
    </div>
    </form>
</body>

</html>

隐藏代码是：

Using System;
using System.Web.UI.WebControls;
using System.Xml;

namespace Ajaxy
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Fill();
        }

        private void Fill()
        {

            PopulateDataSource();
            AccordionControl.DataSource = RockNUGTwitter.GetXmlDocument().SelectNodes("//item");
            AccordionControl.DataBind();

        }

        private void PopulateDataSource()
        {
            XmlDocument RockNugTwitterRSSDocument = new XmlDocument();
            RockNugTwitterRSSDocument.Load("http://twitter.com/statuses/user_timeline/15912811.rss");
            RockNUGTwitter.Data = RockNugTwitterRSSDocument.OuterXml;
        }

        protected void AccordionControl_ItemDataBound(object sender, AjaxControlToolkit.AccordionItemEventArgs e)
        {
            XmlNode ItemNode = (XmlNode)e.AccordionItem.DataItem;
            if(e.AccordionItem.ItemType == AjaxControlToolkit.AccordionItemType.Content)
            {
                HyperLink ContentLink = (HyperLink)e.AccordionItem.FindControl("ContentLink");
                ContentLink.NavigateUrl = ItemNode.SelectSingleNode("link").InnerText;
                Literal ContentLiteral = (Literal)e.AccordionItem.FindControl("ContentLiteral");
                ContentLiteral.Text = ItemNode.SelectSingleNode("title").InnerText;
                ContentLink.Text = "Link";
            }
            else if(e.AccordionItem.ItemType == AjaxControlToolkit.AccordionItemType.Header)
            {
                Label HeaderLabel = (Label) e.AccordionItem.FindControl("HeaderLabel");
                HeaderLabel.Text = PrettyTitle(ItemNode.SelectSingleNode("title").InnerText);
            }
        }

        private string PrettyTitle(string FullItem)
        {
            string PrettyString = FullItem.Replace("RockNUG: ", "");
            string[] Words = PrettyString.Split(' ');
            const int MAX_WORDS_TOSHOW = 4;
            int WordsToShow = MAX_WORDS_TOSHOW;
            if(Words.Length < MAX_WORDS_TOSHOW)
            {
                WordsToShow = Words.Length;
            }
            PrettyString = String.Join(" ", Words, 0, WordsToShow);
            if (Words.Length > WordsToShow)
            {
                PrettyString += "...";
            }
            return PrettyString;
        }
    }
}

There might be a sexier way, but this works. Populate your data source however you wish. This was just for demo purposes. Ditto for PrettyTitle() Key is to remember there are two item types in the accordion.

<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Accordion Binding</title>
</head>
<body>
    <form id="form1" runat="server">
    <asp:ScriptManager ID="AjaxScriptManager" runat="server">
    </asp:ScriptManager>
    <div>
        <cc1:Accordion ID="AccordionControl" runat="server" 
            onitemdatabound="AccordionControl_ItemDataBound">
            <Panes></Panes>
            <HeaderTemplate>
                <asp:Label ID="HeaderLabel" runat="server" />
            </HeaderTemplate>
            <ContentTemplate>
                <asp:Literal ID="ContentLiteral" runat="server" />
                <asp:HyperLink ID="ContentLink" runat="server" />
            </ContentTemplate>
        </cc1:Accordion><asp:xmldatasource runat="server" ID="RockNUGTwitter" ></asp:xmldatasource>
    </div>
    </form>
</body>

</html>

And codebehind is :

Using System;
using System.Web.UI.WebControls;
using System.Xml;

namespace Ajaxy
{
    public partial class _Default : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            Fill();
        }

        private void Fill()
        {

            PopulateDataSource();
            AccordionControl.DataSource = RockNUGTwitter.GetXmlDocument().SelectNodes("//item");
            AccordionControl.DataBind();

        }

        private void PopulateDataSource()
        {
            XmlDocument RockNugTwitterRSSDocument = new XmlDocument();
            RockNugTwitterRSSDocument.Load("http://twitter.com/statuses/user_timeline/15912811.rss");
            RockNUGTwitter.Data = RockNugTwitterRSSDocument.OuterXml;
        }

        protected void AccordionControl_ItemDataBound(object sender, AjaxControlToolkit.AccordionItemEventArgs e)
        {
            XmlNode ItemNode = (XmlNode)e.AccordionItem.DataItem;
            if(e.AccordionItem.ItemType == AjaxControlToolkit.AccordionItemType.Content)
            {
                HyperLink ContentLink = (HyperLink)e.AccordionItem.FindControl("ContentLink");
                ContentLink.NavigateUrl = ItemNode.SelectSingleNode("link").InnerText;
                Literal ContentLiteral = (Literal)e.AccordionItem.FindControl("ContentLiteral");
                ContentLiteral.Text = ItemNode.SelectSingleNode("title").InnerText;
                ContentLink.Text = "Link";
            }
            else if(e.AccordionItem.ItemType == AjaxControlToolkit.AccordionItemType.Header)
            {
                Label HeaderLabel = (Label) e.AccordionItem.FindControl("HeaderLabel");
                HeaderLabel.Text = PrettyTitle(ItemNode.SelectSingleNode("title").InnerText);
            }
        }

        private string PrettyTitle(string FullItem)
        {
            string PrettyString = FullItem.Replace("RockNUG: ", "");
            string[] Words = PrettyString.Split(' ');
            const int MAX_WORDS_TOSHOW = 4;
            int WordsToShow = MAX_WORDS_TOSHOW;
            if(Words.Length < MAX_WORDS_TOSHOW)
            {
                WordsToShow = Words.Length;
            }
            PrettyString = String.Join(" ", Words, 0, WordsToShow);
            if (Words.Length > WordsToShow)
            {
                PrettyString += "...";
            }
            return PrettyString;
        }
    }
}

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