How to edit all the values from xml file???

Hi all,

I wanna create a method which receives the xml file name, then read it and change the values...

I have different xml files, each one has different nodes, so I just want a simple method that reads any xml file and iterates through all the nodes, and change all the values.

I've tried some code

XmlDocument xmlDoc = new XmlDocument();
                xmlDoc.Load(xmlFile);
                string var = "//"+xmlDoc.DocumentElement.Name;
                XmlNodeList nodeList = xmlDoc.SelectNodes(var);
                foreach(XmlNode node in nodeList)
                {
                    foreach(XmlNode childNode in node.ChildNodes)
                    {
                        switch (childNode.NodeType)
                        {
                            case XmlNodeType.Element: 
                                childNode.InnerText = nodeValue;
                                break;
                            case XmlNodeType.Attribute:
                                childNode.InnerText = nodeValue;
                                break;
                        }
                    }   
                }

But only works with xml like this:

<value><value1></value1>	<value2></value2>
	...</value>

And I need a dinamic method for iterating over xml like this:

<value><value1><value1.1></value1.1><value1.2></value1.2></value1>	<value2><value2.1><value2.1.1></value2.1.1></value2.1></value2>
	...</value>