The LoadXML method uses the MSXML ( MSXML.DOMDocument, XML DOM Document )parser to load XML documents. The control is emptied when the LoadXML method is called. During loading, the control fires the AddNode event for each XML node added to the control. For instance, this way, you can assign an editor for each node, when the AddNode event occurs. Use the Editor property to assign a predefined editor to a node. Use the SaveXML method to save the control's content to a specified location. The AllowDuplicateEntries property returns or sets a value that specifies whether the control supports nodes with the same key ( duplicates ).

The Name property indicates the name of the XML node being loaded. The Value property indicates the value of the XML node being loaded. The Image property of the Node object indicates the type of the XML node being loaded. The Image property holds the type of the XML node, like listed bellow: 

• NODE_ELEMENT (1) The node represents an element (its nodeTypeString property is "element"). An Element node can have the following child node types: Element, Text, Comment, ProcessingInstruction, CDATASection, and EntityReference. The Element node can be the child of the Document, DocumentFragment, EntityReference, and Element nodes.
• NODE_ATTRIBUTE (2) The node represents an attribute of an element (its nodeTypeString property is "attribute"). An Attribute node can have the following child node types: Text and EntityReference. The Attribute node does not appear as the child node of any other node type; it is not considered a child node of an Element.
• NODE_TEXT (3) The node represents the text content of a tag (its nodeTypeString property is "text"). A Text node cannot have any child nodes. The Text node can appear as the child node of the Attribute, DocumentFragment, Element, and EntityReference nodes.
• NODE_CDATA_SECTION (4) The node represents a CDATA section in the XML source (its nodeTypeString property is "cdatasection"). CDATA sections are used to escape blocks of text that would otherwise be recognized as markup. A CDATASection node cannot have any child nodes. The CDATASection node can appear as the child of the DocumentFragment, EntityReference, and Element nodes.
• NODE_ENTITY_REFERENCE (5) The node represents a reference to an entity in the XML document (its nodeTypeString property is "entityreference"). This applies to all entities, including character entity references. An EntityReference node can have the following child node types: Element, ProcessingInstruction, Comment, Text, CDATASection, and EntityReference. The EntityReference node can appear as the child of the Attribute, DocumentFragment, Element, and EntityReference nodes.
• NODE_ENTITY (6) The node represents an expanded entity (its nodeTypeString property is "entity"). An Entity node can have child nodes that represent the expanded entity (for example, Text and EntityReference nodes). The Entity node can appear as the child of the DocumentType node.
• NODE_PROCESSING_INSTRUCTION (7) The node represents a processing instruction from the XML document (its nodeTypeString property is "processinginstruction"). A ProcessingInstruction node cannot have any child nodes. The ProcessingInstruction node can appear as the child of the Document, DocumentFragment, Element, and EntityReference nodes.
• NODE_COMMENT (8) The node represents a comment in the XML document (its nodeTypeString property is "comment"). A Comment node cannot have any child nodes. The Comment node can appear as the child of the Document, DocumentFragment, Element, and EntityReference nodes.
• NODE_DOCUMENT (9) The node represents a document object, that as the root of the document tree, provides access to the entire XML document (its nodeTypeString property is "document"). It is created using the progID "Microsoft.XMLDOM" or through a data island using <XML> or <SCRIPT LANGUAGE=XML>. A Document node can have the following child node types: Element (maximum of one), ProcessingInstruction, Comment, and DocumentType. The Document node cannot appear as the child of any node types.
• NODE_DOCUMENT_TYPE (10) The node represents the document type declaration, indicated by the <!DOCTYPE> tag (its nodeTypeString property is "documenttype"). A DocumentType node can have the following child node types: Notation and Entity. The DocumentType node can appear as the child of the Document node.
• NODE_DOCUMENT_FRAGMENT (11) The node represents a document fragment (its nodeTypeString property is "documentfragment"). The DocumentFragment node associates a node or subtree with a document without actually being contained within the document. A DocumentFragment node can have the following child node types: Element, ProcessingInstruction, Comment, Text, CDATASection, and EntityReference. The DocumentFragment node cannot appear as the child of any node types.
• NODE_NOTATION (12) The node represents a notation in the document type declaration (its nodeTypeString property is "notation"). A Notation node cannot have any child nodes. The Notation node can appear as the child of the DocumentType node.

Use the Images method to add images to the control, so each type of element in your XML document, has a graphic representation. So, the first icon in the Images collection indicates the NODE_ELEMENT type, the second icon in the Images collection indicates the NODE_ATTRIBUTE type, and so on.