CODEWITHSUNDEEP
c#xml
user1594987
user1594987

Reputation: 107

xml node parent ID c#

I'm trying to copy some xml node from a template to place them in another xml. The structure of the xml follows.

<grandparent>
    <parent>
        <children>
            <grandchildren/>
        </children>
        <children>
            <grandchildren/>
        </children>
        <children>
            <grandchildren/>
        </children>
    </parent>
    <parent>
        <children>
            <grandchildren/>
            <grandchildren/>
            <grandchildren/>
        </children>
        <children>
            <grandchildren/>
            <grandchildren/>
            <grandchildren/>
        </children>
        <children>
            <grandchildren/>
            <grandchildren/>
            <grandchildren/>
        </children>
    </parent>
</grandparent>

Is it possible for me to tranverse down the second parent and the selected children and grab all the grandchildren?And insert all the grandchildren into another xml file?

Upvotes: 1

Views: 891

Answers (2)

Ivan Golović
Ivan Golović

Reputation: 8832

You can do it like this:

        string input = @"<grandparent>
            <parent>
                <children>
                    <grandchildren/>
                </children>
                <children>
                    <grandchildren/>
                </children>
                <children>
                    <grandchildren/>
                </children>
            </parent>
            <parent>
                <children>
                    <grandchildren id=""1""/>
                    <grandchildren id=""2""/>
                    <grandchildren id=""3""/>
                </children>
                <children>
                    <grandchildren id=""4""/>
                    <grandchildren id=""5""/>
                    <grandchildren id=""6""/>
                </children>
                <children>
                    <grandchildren id=""7""/>
                    <grandchildren id=""8""/>
                    <grandchildren id=""9""/>
                </children>
            </parent>
        </grandparent>";

        XDocument doc = XDocument.Parse(input);
        // Use XDocument.Load method to load XML content from file
        //XDocument doc = XDocument.Load(<filepath>);

        IEnumerable<XElement> elements = doc
            .Root
            .Elements("parent")
            .ElementAt(1)
            .Descendants("grandchildren");

        XElement rootElement = new XElement("rootElement");
        rootElement.Add(elements);

        rootElement.Save(@"C:\Doc2.xml");

I presume that the XML you posted is not just a fragment but rather entire XML content you wish to parse. The tricky part here is that you are accessing element by it's ordinal number, it should be done by some kind of ID attribute on parent element, so it could be accessed by comparing it's ID instead of using ElementAt method that retrieves the element according to it's ordinal position. I added the id attribute to grandchildren so it would be visible that the grandchildren elements belong to the second parent element, not the first one.

Upvotes: 2

Anirudha
Anirudha

Reputation: 32787

 XElement doc = XElement.Load("c:\\yourXML.xml");
 XElement newdoc = new XElement("GrandChildren");
 foreach (XElement x in doc.Descendants("parent").Skip(1).Descendants("children").Descendants("grandchildren"))
 {
       newdoc.Add(x);
 }

newDoc now contains your required XML..

Upvotes: 0

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