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xml presented in a tree view

Posted on 2002-07-25
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Last Modified: 2012-06-21
I have an xml file with around 500 records. I want my user to browse the xml file via a tree view. is this possible.

thnks in advance.
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Question by:drnadeem
3 Comments
 
LVL 7

Accepted Solution

by:
Cynna earned 100 total points
ID: 7178548

Yes it is, but you need XML parser for this. This is a bit of work, but there is
no need to develop your own. You have two choices:

1. Use Microsoft XML ActiveX component. You need to import Microsoft XML type library
   for this (Project -> Import type library -> Microsoft XML <version xxx>).
   This is slightly modified code from borland.public.delphi.xml that does what you want:


procedure XMLFile2TreeView(XMLDocFileName: String; TV:TTreeView); // Parses and transfers xml file to a treeview
var DOM: IXMLDOMDocument;
  procedure AddNodes(XMLNode: IXMLDOMNode; TreeNode: TTreeNode);
  var Index: Integer;
      NewNode: TTreeNode;
      Value: string;
  begin
    if XMLNode.nodeType in [NODE_TEXT, NODE_CDATA_SECTION, NODE_COMMENT] then
      Value := XMLNode.text
    else
      Value := XMLNode.nodeName;
    NewNode := TV.Items.AddChild(TreeNode,
    XMLNode.nodeTypeString + ': ' + Value);
    for Index := 0 to XMLNode.childNodes.length - 1 do
        AddNodes(XMLNode.childNodes.item[Index], NewNode);
  end;
begin
  DOM := CoDOMDocument.Create;
  DOM.load(XMLDocFileName);
  with TV do begin
       try
          Items.BeginUpdate;
          Items.Clear;
          AddNodes(DOM, nil);
          Items[0].Expand(True);
          TopItem := Items[0];
       finally
          Items.EndUpdate;
       end;
  end;
end;

// DEMO (requires Button1 and TreeView1 on the form, uses MSXML_TLB):
//------------------------------------------------------------------
procedure TForm1.Button1Click(Sender: TObject);
begin
  XMLFile2TreeView('demo.xml', TreeView1);
end;



2. Use custom XML parser component, for example:  http://www.destructor.de/xmlparser/

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LVL 14

Expert Comment

by:DragonSlayer
ID: 7179081
or embed a webbrowser and just load the file in the embedded webbrowser :)
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LVL 1

Author Comment

by:drnadeem
ID: 7183139
the component worked 4 me
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