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Upgrading Components Using the Base Service in SDL Tridion 2011

I am updating a component using Core Service in Tridion 2011.

Sample code is as follows:

string COMPONENT_URI = "tcm:8-674";
string SCHEMA_URI = "tcm:8-426-8";

ComponentData component = client.TryCheckOut(COMPONENT_URI, null) as ComponentData;

try
{
    Response.Write("<BR>" + component.Content);
    XDocument xdoc = XDocument.Parse(component.Content);
    var element = xdoc.Elements("first").Single();
    element.Value = "updated";
    xdoc.Save(component.Content);
    client.Save(component, null);
    Response.Write("<BR"+"SAVED");
}
catch (Exception ex)
{
    Response.Write("Unable to save comp" + ex.Message);
}

client.CheckIn(COMPONENT_URI, null);

I get the following exception:

 Unable to save compSequence contains no elements

More details:

first - field name in the component

Can anyone help with this?

thank

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3 answers

The XML component in Tridion has the following format:

<Content xmlns="uuid:2607D20D-1B22-4994-98C1-66D9ACF85C20">
  <first>The value of my first field</first>
  <second>The value of my second field</second>
</Content>

Your corresponding code snippet:

var element = xdoc.Elements("first").Single();

This does not allow you to select an item, since it:

  • does not provide a namespace for selection
  • only selection of direct children of the root document

, , , , . XML, , .

, :

XNamespace ns = xdoc.Root.GetDefaultNamespace();
var element = xdoc.Descendants(ns+"first").Single();

, .NET- XML XML , , - .

, XML Core Service, .

, , , XDocument.Save, . , XML .

+12

XML DOM .

XDocument.Save(string fileName) - XDocument , , .

- :

using (var client = new SessionAwareCoreServiceClient(netTcpBinding, remoteAddress))
{
    ReadOptions readOptions = new ReadOptions();
    ComponentData component = client.Read(compTcmUri, readOptions) as ComponentData;
    XDocument dom = XDocument.Parse(component.Content);
    // do your modifications to dom
    component.Content = dom.ToString();
    component = client.Update(component, readOptions) as ComponentData;

    Console.WriteLine("Component updated: " + component.LocationInfo.WebDavUrl);
}
+3

Sometimes, especially if you synchronize content from another repository that acts like a wizard, you can simply restore the component from scratch. In this case, here is a basic example of how to do this:

    public static void updateComponent()
    {
        string componentWdUrl = "/webdav/020%20Content/Building%20Blocks/Content/wstest/testComponent.xml";
        CoreServicesUtil coreServicesUtil = new CoreServicesUtil();
        coreServicesUtil.coreServiceClient.CheckOut(componentWdUrl, true, coreServicesUtil.readOptions);
        ComponentData componentData = coreServicesUtil.getComponentData(componentWdUrl);
        SchemaData schemaData = coreServicesUtil.getSchemaData(componentData.Schema.IdRef);
        componentData.Content = xmlUtil.GetNewXmlNode("Content", schemaData.NamespaceUri);
        componentData.Metadata = xmlUtil.GetNewXmlNode("Metadata", schemaData.NamespaceUri);
        componentData.AddSingleField("singlefield", "singlefield sample", schemaData.NamespaceUri);
        componentData = (ComponentData)coreServicesUtil.coreServiceClient.Save(componentData, coreServicesUtil.readOptions);
        coreServicesUtil.coreServiceClient.CheckIn(componentData.Id, coreServicesUtil.readOptions);
        coreServicesUtil.coreServiceClient.Close();
    }

A detailed description of the methods used in this example is explained in the article:

Error Error Creating Component Using Primary Service

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