How to delete a child node using OmniXML?

问题

I'd like to delete the line with pathid="2" in the rowpath section...

<?xml version="1.0" encoding="utf-8"?>
<LostPath Condition="Active" Selected="train.exe" FullPathOfSelected="D:\mygames\arcade\train\" Selected="0">
  <rowdir Name="train.exe" GamePath="D:\mygames\arcade\train\" Selected="0" />
  <rowdir Name="othelo.exe" GamePath="D:\mygames\arcade\othello\" Selected="3"/>
  <rowpath Name="train.exe" PathId="1" LevelPath="D:\mygames\arcade\train\levelpack1" levelsFound="27" />
  <rowpath Name="train.exe" PathId="2" LevelPath="D:\mygames\arcade\train\levelpack21" levelsFound="19" />
  <rowpath Name="othelo.exe" PathId="0" LevelPath="D:\mygames\arcade\othelo\levelpack1" levelsFound="11" />
</LostPath>

How can I do that ?

回答1:

Try to use this.

uses
  OmniXML, OmniXMLUtils;

procedure TForm1.Button1Click(Sender: TObject);
var
  XMLNode: IXMLNode;
  XMLDocument: IXMLDocument;
begin
  XMLDocument := CreateXMLDoc;
  if XMLLoadFromFile(XMLDocument, 'XMLFile.xml') then
  begin
    XMLNode := XMLDocument.SelectSingleNode('/LostPath');
    DeleteNode(XMLNode, 'rowpath[@PathId="2"]');
    XMLDocument.Save('XMLFile.xml');
  end;
end;

回答2:

There are few ways how to delete all nodes with the same attribute value. Here's one of them. But please note, this post doesn't answer this question. It should be asked as another question.

uses
  OmniXML, OmniXMLUtils;

procedure TForm1.Button1Click(Sender: TObject);
var
  XMLNode: IXMLNode;
  XMLDocument: IXMLDocument;
begin
  XMLDocument := CreateXMLDoc;
  if XMLLoadFromFile(XMLDocument, 'XMLFile.xml') then
  begin
    XMLNode := XMLDocument.SelectSingleNode('/LostPath');
    DeleteAllChildren(XMLNode, 'rowpath[@Name="train.exe"]');
    XMLDocument.Save('XMLFile.xml');
  end;
end;

来源：https://stackoverflow.com/questions/7594992/how-to-delete-a-child-node-using-omnixml

标签

Delphi

delphi-7

omnixml