Merging config files (or XML) in C#

Question

What would be the fastest way, to merge 2 XML files, so I would locate a node in first one, empty it, take all children from the same tag (same node) in second XML and put it in the first one.

Answer 1

Check out this article on MSDN: Article

I think this is the bit of code you are looking for:

try
{
 XmlTextReader xmlreader1 = new XmlTextReader("C:\\Books1.xml");
 XmlTextReader xmlreader2 = new XmlTextReader("C:\\Books2.xml");

 DataSet ds = new DataSet();
 ds.ReadXml(xmlreader1);
 DataSet ds2 = new DataSet();
 ds2.ReadXml(xmlreader2);
 ds.Merge(ds2);
 ds.WriteXml("C:\\Books.xml");
 Console.WriteLine("Completed merging XML documents");
}
catch (System.Exception ex)
{
 Console.Write(ex.Message);
}
Console.Read();

Hope that helps!

Answer 2

You can load both files into two XElement objects, locate the target nodes in both objects and do the switch.

Here is a sample:

var nodes1 = XDocument.Parse(file1).Element("test").Element("nodes");
var nodes2 = XDocument.Parse(file2).Element("test").Element("nodes");

nodes1.Nodes().Remove();
nodes1.Add(nodes2.Nodes());

Here is the XML snippet i tried it on:

<test>
    <nodes>
        <node id="1">
            Hi
        </node>
        <node id="2">
            Hi again
        </node>
        <node id="3">
            Hi once more
        </node>
    </nodes>
</test>