Create an editable XML document (v) the TreeView control in execution

treeview|xml| Create | control | execute

Execute the TreeView control in order to be more perfect, listing 4 contains the final Treevie controls for vb.net version, or C # versions two editions. To make it easier to use, I redefined the structure and code.  It also adds KeyDown control to support some of the default shortcuts, such as: Control-n (New), F2 (edit), and Del (delete). There seems to be no need to attach any events, so the final API contains a method and eight attributes, which they listed in table 1, most of them are simple flags, or the default switches, I added them in order to allow you to choose to use to enhance your application's editable feature table 1:xmltreeview The properties and methods of the control, you can use them in your application

Attribute	Type	Parameter	Description
Xmldroptarget	Get	System.Xml.XmlNode	The XML node corresponding to the currently selected node in the TreeView
Activexmldocument	Get	System.Xml.XmlDocument	The XML document bound to the TreeView. This is updates as the tree changes
Xpathfilter	get; Set	String	The XPath filter used to identify the element or attribute whose value is used to display the folder ' s name. A folder constitutes the "tree view" s smallest navigable unit
Xmlinsertionnode	get; Set	System.Xml.XmlNode	The template for a new folder. The TreeView caches this, and clones it as a new folder is required.
Dragdropactive	get; Set	bool	Flag denoting whether a drag/drop operation is currently in progress.
Enableeditnode	get; Set	bool	Flag denoting whether label editing is supported (default YES)
Enabledeletenode	get; Set	bool	Flag denoting whether folder deletion is supported (default YES)
Enableinsertnode	get; Set	bool	Flag denoting whether folder insertion is supported (default YES)
Method :	Returns	Parameter	Description
Load	void	System.Xml.XmlDocument	Loads the specified XML document and uses it to populate the TreeView. Set Xpathfilter prior to calling Load () to define a appropriate view on the underlying data.

Call the Sample project  project that is included with this article, and you can see the TreeView control in action, a simple project that is a cut version of the directory administrator I mentioned earlier, and it is necessary to say that you can implement a drag-and-drop operation with just four lines. Figure three shows the user to create a new collection of folders

[C#]

   // Load the XML document from a file

   xmlDocument = new System.Xml.XmlDataDocument();

   xmlDocument.Load(strXmlDocument);

   // After setting the path filter, load the 

   // document into the TreeView

   xmlTreeView1.XPathFilter = "attribute::id";

   xmlTreeView1.Load(xmlDocument);

   // Defining XmlInsertionNode allows creation of new 

   // nodes within the TreeView

   System.Xml.XmlDocument insert_fragment = new 

      System.Xml.XmlDocument();

   insert_fragment.LoadXml("<product id='New 

      Item'><description/><ordercode/><price/>

      <image/></product>");

   xmlTreeView1.XmlInsertionNode = 

      insert_fragment.DocumentElement;

   [VB]

   ' Load the XML document from a file

   xmlDocument = New System.Xml.XmlDataDocument()

   xmlDocument.Load(strXmlDocument)

   ' After setting the path filter, load the 

   ' document into the TreeView

   xmlTreeView1.XPathFilter = "attribute::id"

   xmlTreeView1.Load(xmlDocument)

   ' Defining XmlInsertionNode allows creation of new 

   ' nodes within the TreeView

   Dim insert_fragment As New System.Xml.XmlDocument()

   insert_fragment.LoadXml("<product id='New " & _

      "Item'><description/><ordercode/><price/>" & _

      "<image/></product>")

   xmlTreeView1.XmlInsertionNode = 

      insert_fragment.DocumentElement

Figure II shows a form for the directory administrator, and figure three shows a detailed final catalog

Figure 2. The Catalog Administrator form:this figure shows the hierarchical TreeView and the details for a item in the Catalog ADM Inistrator form.

Figure 3. Final Catalog. The figure shows a detail view of the final catalog.

Other parts of the code handle the editing of the product list, as well as the updating of the XML document. So when you close the application, the code saves all the changes to the document. Hopefully this will have some good inspiration for your project, or enrich your component or interface development.