Update value in xml file

Question

I have a xml-file:

  
    
    
    &         


        

Answer 1

Here you go:

XmlDocument xmldoc = new XmlDocument();
xmldoc.LoadXml(@"
    
        
            
            
            
        
    ");
XmlElement node1 = xmldoc.SelectSingleNode("/root/level/node1") as XmlElement;
if (node1 != null)
{
    node1.InnerText = "something"; // if you want a text
    node1.SetAttribute("attr", "value"); // if you want an attribute
    node1.AppendChild(xmldoc.CreateElement("subnode1")); // if you want a subnode
}