XmlAttribute.ReplaceChild Method (XmlNode, XmlNode)
Replaces the child node specified with the new child node specified.
Assembly: System.Xml (in System.Xml.dll)
This node is of a type that does not allow child nodes of the type of the newChild node.
The newChild is an ancestor of this node.
The newChild was created from a different document than the one that created this node.
This node is read-only.
The oldChild is not a child of this node.
If the newChild is already in the tree, it is first removed.
If the newChild was created from another document, you can use XmlDocument.ImportNode to import the node to the current document.
Available since 10
Available since 2.0