如何在Kentico中解析多级XML？Universal Viewer/Repeater调用咨询

Hey there, let's work through this XML data issue in Kentico together! The core problem here is that the default XML Data Source doesn't automatically traverse nested nodes like <users> out of the box, but there are a few solid ways to fix this and get your user data into a Repeater or Universal Viewer.

方案1：调整XML Data Source的XPath表达式 #

The simplest fix is to explicitly target the user nodes with an XPath expression. Let's say your XML structure looks something like this:

<root>
  <users>
    <user>
      <username>clintw</username>
      <email>clint@example.com</email>
    </user>
    <user>
      <username>johnd</username>
      <email>john@example.com</email>
    </user>
  </users>
</root>

In the Kentico backend, when configuring your XML Data Source:

• Find the XPath expression setting field
• Enter a path that directly points to your user nodes, e.g., /root/users/user

This tells the data source to skip the parent <users> node and pull each individual <user> entry instead. Once configured, you can bind this data source to a Repeater or Universal Viewer, and use transformations like <%# Eval("username") %> to display the user fields.

方案2：用自定义代码手动解析XML并绑定 #

If XPath isn't cutting it (maybe your XML has complex namespaces or irregular structure), you can build a simple ASCX user control to handle the parsing manually, then bind the data to a Repeater. Here's a quick example:

Backend code (ASCX.cs) #

protected void Page_Load(object sender, EventArgs e)
{
    // Load XML - replace this with your Web service's XML string/file path
    XmlDocument xmlDoc = new XmlDocument();
    xmlDoc.LoadXml(YourWebService.GetXmlResponse()); // Or use xmlDoc.Load(Server.MapPath("~/path/to/file.xml"))

    // Grab all user nodes (adjust XPath if your structure differs)
    XmlNodeList userNodes = xmlDoc.SelectNodes("//users/user");

    // Convert to a bindable list
    List<UserRecord> users = new List<UserRecord>();
    foreach (XmlNode node in userNodes)
    {
        users.Add(new UserRecord
        {
            Username = node.SelectSingleNode("username")?.InnerText ?? "",
            Email = node.SelectSingleNode("email")?.InnerText ?? ""
        });
    }

    // Bind to Repeater
    rptUserList.DataSource = users;
    rptUserList.DataBind();
}

// Simple class to hold user data
public class UserRecord
{
    public string Username { get; set; }
    public string Email { get; set; }
}

Frontend markup (ASCX) #

<asp:Repeater ID="rptUserList" runat="server">
    <ItemTemplate>
        <div class="user-card">
            <h4><%# Eval("Username") %></h4>
            <p>Email: <%# Eval("Email") %></p>
        </div>
    </ItemTemplate>
</asp:Repeater>

Just add this control to your Kentico page, and it'll render the user data directly. This approach gives you full control over XML parsing, perfect for edge cases.

方案3：Universal Viewer with Custom Data Source #

If you prefer using the Universal Viewer, you can create a custom data source to feed it parsed user data:

1. Go to Development > Data sources in the Kentico backend
2. Create a new Custom Data Source
3. In the code section, implement the IEnumerable interface to return your parsed user list (similar to the logic in方案2)
4. Save the data source, then add a Universal Viewer to your page and select this custom source
5. Configure a transformation to display the user fields as needed

Quick Notes to Avoid Headaches #

• Double-check that your XML is well-formed (no missing tags or syntax errors)
• If your XML uses namespaces, you'll need to add a namespace manager to your XPath queries, e.g.:

  XmlNamespaceManager nsMgr = new XmlNamespaceManager(xmlDoc.NameTable);
  nsMgr.AddNamespace("ns", "http://your-xml-namespace.com");
  XmlNodeList userNodes = xmlDoc.SelectNodes("//ns:users/ns:user", nsMgr);
  

内容的提问来源于stack exchange，提问作者Clint Warner