Write XML without overwriting

Thanks dude,

i can't use fileStream because finally i can't have the XML document in a hard drive.

So i had to play with the nodes.

Regards to everybody.

Hi,
try this,
XmlDocument doc = new XmlDocument();
            FileStream st = new FileStream(filepath, FileMode.Open);
            doc.Load(st);
            XmlElement el = doc.CreateElement("IP");
            el.InnerText = strIP;
            doc.DocumentElement.AppendChild(el);
            st.Close();
            doc.Save(filepath);

It would be something like that, i hope can help some one.

XmlNode Node = DocXml.DocumentElement.LastChild;
// Create element
                elem = DocXml.CreateElement("IP");
                elem.InnerText = strIP;
                Nodo.AppendChild(elem);
...
...
//DocXml.Save(fic);

Regards.

This is my esquema in XML.