Knowledge Base Nr: 00285 xpathsearch.cs - http://www.swe-kaiser.de

c#: in xml suchen mit XPath (verwendet namespaces)

  
    XPathDocument doc = new XPathDocument(@"..\..\XmlFiles\kombi.xml");

    XPathNavigator nav = ((IXPathNavigable)doc).CreateNavigator();
    XmlNamespaceManager man = new XmlNamespaceManager(nav.NameTable);

    man.AddNamespace("fx", "http://www.asam.net/xml/fbx");
    man.AddNamespace("flexray", "http://www.asam.net/xml/fbx/flexray");
    man.AddNamespace("lin", "http://www.asam.net/xml/fbx/lin");
    man.AddNamespace("can", "http://www.asam.net/xml/fbx/can");
    man.AddNamespace("ho", "http://www.asam.net/xml");
    man.AddNamespace("xsi", "http://www.w3.org/2001/XMLSchema-instance");
    man.AddNamespace("xs", "http://www.asam.net/xml/fbx/all http://www.asam.net/xml/fbx/1_2_0a/xsd/fibex4multiplatform.xsd");

    XPathExpression query = nav.Compile("//ho:SHORT-NAME");
    query.SetContext(man);

    XPathNodeIterator iter = nav.Select(query);    //"/FIBEX/ELEMENTS/ECUS/ECU[@ID='component1']");

    while (iter.MoveNext())
    {
        string id = iter.Current.GetAttribute("ID", "");
        string str1 = iter.Current.LocalName + " " + iter.Current.LocalName +" " + id;
        System.Console.WriteLine(str1);

        //alle untergeordneten knoten
        //XPathNodeIterator newIter = iter.Current.SelectDescendants(XPathNodeType.Element,true);

        //alle übergeordneten knoten
        XPathNodeIterator newIter = iter.Current.SelectAncestors(XPathNodeType.Element,true);
        while (newIter.MoveNext())
        {
            string str = newIter.Current.Name + " " + newIter.Current.Value;
        }
    }

////////////////
short-name (element)
non exact match
non case sensitive
            XPathExpression query = nav.Compile("//ho:SHORT-NAME");
            while (iter.MoveNext())
            {
                if (iter.Current.Value == search)
                {
                }
            }
////////////////
ids (property)
exact match
case sensitive
            XPathExpression query = nav.Compile("//*[@ID='bsg']");  <<<<<search
            while (iter.MoveNext())
            {
                string str1 = iter.Current.Name + " " + iter.Current.Value;
            }

////////////////
rechte seite (elemente)
exact match
case sensitive
            XPathExpression query = nav.Compile("//*[*='lullibertproto']");
            query.SetContext(man);

            XPathNodeIterator iter = nav.Select(query);    //"/FIBEX/ELEMENTS/ECUS/ECU[@ID='component1']");

            while (iter.MoveNext())
            {
                string str1 = iter.Current.Name + " " + iter.Current.Value;
            }
////////////////
////////////////