CODEWITHSUNDEEP
c#xmlxml-serialization
Frenchi In LA
Frenchi In LA

Reputation: 3169

Add Object to existing Xelement

I have a object obj with 2 properties p1, p2. and a XElement like:

<root><AA><BB>BB</BB></AA></root>

I'd like to make my Xelement as:

<root><AA><BB>BB</BB><CC><p1>val1</p1><p2>val2</p2></CC></AA></root>

I make a new XElement from obj 

XElement x = new XElement("CC",new XElement("p1", obj.p1),new XElement("p2", obj.p2));

and insert it in AA element. is ther a better way by serializing my obj and convert it to XElement? (Because My object can change in the future) . Thanks for any help. Here is my attempt to use XmlSerializer:

   XElement xelem = reqRet.RequestDefinition;
    xelem.Descendants("AA").ToList().ForEach(reqitem =>
    {
        using (MemoryStream ms = new MemoryStream())
        {
            using (TextWriter tw = new StreamWriter(ms))
            {
                XmlSerializer ser = new XmlSerializer(typeof(obj));
                ser.Serialize(tw, ObjVAL);
                schElem = new XElement( XElement.Parse(Encoding.ASCII.GetString(ms.ToArray())));
                reqitem.Add(schElem);
            }
        }
        reqitem.Add(schElem);
    });

Upvotes: 0

Views: 778

Answers (1)

Dan Field
Dan Field

Reputation: 21661

Since you're open to using XmlSerializer, use the XmlRoot attribute; try adding the following to your class declaration:

[XmlRoot(Namespace = "www.contoso.com", 
   ElementName = "CC", 
   DataType = "string", 
   IsNullable=true)]
public class MyObj
{
    ...

See https://msdn.microsoft.com/en-us/library/system.xml.serialization.xmlrootattribute%28v=vs.110%29.aspx for more information.

After that, you can use this code:

    XElement xelem = XElement.Parse("<root><AA><BB>BB</BB></AA></root>");
    MyObj myObj = new MyObj();

    XmlSerializer ser = new XmlSerializer(typeof(MyObj));
    foreach (XElement reqitem in xelem.Descendants("AA"))
    {
        using (MemoryStream ms = new MemoryStream())
        {
            ser.Serialize(ms, myObj);                
            reqitem.Add(XElement.Parse(Encoding.UTF8.GetString(ms.ToArray())));


        }
    }

This gives the desired output.

If you want to remove the XMLNS declarations, you can use .Attributes.Remove() after creating the XElement.

Upvotes: 1

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