Is there anyway to append nodes and data to a already existing XMl file? i can create the file and add information at the same time i create it but how do add information to it after the XML file has been created?

One way is to use the AppendChild method of the XmlDocument. Open the existing file, use CreateElement/CreateNode to create the node and add any required data. The use AppendChild(NewNode) to add the new element to the file. Then save the file, overwriting the existing copy.

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Joe (Microsoft MVP - XML)

Joe: I was wondering if there is a way to append a child node to an existing XML file which is as big as 50 - 100mb, without loading the whole file into memory?