在文档中的任何位置从另一个xml文件插入节点（C＃）

Question

XmlTextReader myReader = new XmlTextReader("abc.xml");
XmlDocument mySourceDoc = new XmlDocument();
mySourceDoc.Load(myReader);
myReader.Close();

myReader = new XmlTextReader("pqr.xml");
XmlDocument myDestDoc = new XmlDocument();
myDestDoc.Load(myReader);
myReader.Close();

XmlNode rootDest = myDestDoc["root node"];
XmlElement nodeOrig = (XmlElement)mySourceDoc["root node"].ChildNodes[0];
XmlNode nodeDest = myDestDoc.ImportNode(nodeOrig, true);

try
{
    rootDest.AppendChild(nodeDest);
}
catch (Exception ex)
{
    MessageBox.Show("" + ex);
}
XmlTextWriter myWriter = new XmlTextWriter("pqr.xml", Encoding.UTF8);
myWriter.Formatting = Formatting.Indented;

myDestDoc.WriteTo(myWriter);
myWriter.Close();

the above code works well if nodes have to be inserted as children of root node.But i want to insert nodes as children of any other node.what should i do?

Answer 1

Say, you have the following xml:

<CONFIGURATION>
  <File>D:\Test\TestFolder\TestFolder1\TestFile.txt</File>
  <Dir>D:\Test\TestFolder\TestFolder1\</Dir>
  <File>D:\Test\TestFolder\TestFolder2\TestFile02.txt</File>
  <File>D:\Test\TestFolder\TestFolder2\TestFile04.txt</File>
  <Dir>D:\Test\TestFolder\TestFolder2\</Dir>
</CONFIGURATION>

And you want to create a new one, containg only File nodes; also the root node must be called Files . Such xml would look like this:

<?xml version="1.0" encoding="utf-8"?>
<Files>
  <File>D:\Test\TestFolder\TestFolder1\TestFile.txt</File>
  <File>D:\Test\TestFolder\TestFolder2\TestFile02.txt</File>
  <File>D:\Test\TestFolder\TestFolder2\TestFile04.txt</File>
</Files>

The following code does this:

XElement infile = XElement.Load("In.xml");
XElement outfile = new XElement("Files");
foreach (XElement x in infile.Elements("File"))
    outfile.Add(x);
outfile.Save("Out.xml");    

This is a simple example, how you can transfer nodes from one xml document to another with LINQ To XML. Consider using this.

You should like it.

EDIT

Original xml:

<?xml version="1.0" encoding="utf-8"?>
<root>
  <abc>
    <pdf>hhh</pdf>
  </abc>
</root>

User input:

abc#uuu#ttt

Output xml:

<?xml version="1.0" encoding="utf-8"?>
<root>
  <abc>
    <pdf>hhh</pdf>
    <uuu>ttt</uuu>
  </abc>
</root>

The code:

        string userinput = "abc#uuu#ttt";
        XElement infile = XElement.Load("In.xml");
        XElement temp = infile;
        string[] commands = userinput.Split(new string[] { "#" }, StringSplitOptions.RemoveEmptyEntries);
        for (int i = 0; i < commands.Length; i++)
        {
            if (i + 1 == commands.Length)
                temp.Value = commands[i];
            else
            {
                if (temp.Element(commands[i]) == null)
                    temp.Add(new XElement(commands[i]));
                temp = temp.Element(commands[i]);
            }
        }
        infile.Save("Out.xml");