Noobish C# question about XML parsing...

  • Thread starter Thread starter WTH
  • Start date Start date
W

WTH

In C++ I had, long ago, written my own XML parsing class as I never found
even a half decent node based hierarchical solution that was simple, now
that I'm starting to develop tools in C# (as a precursor to moving our NT
services, COM/DCOM, and client apps into C#) I'm wondering if there's
something like this out there.

For example, to use my CXMLNode class you could just do this:

CXMLNode l_oRoot;

if( false == l_oRoot.Parse( in_strXML ) )
{
MessageBox( NULL, _T("You gave me crappy XML"), _T("XML be ungood"),
MB_OK );
return false;
}

//How many child nodes in this XML structure?
long l_nChildren = l_oRoot.GetNumberOfChildren();

//Get first node we have (the node used to start parsing XML is just a root
node/container for the 'real' XML nodes)
CXMLNode* l_pNode = l_oRoot.GetChild(0);

//Get an attribute off of this node
tstring l_strMyAttribute = l_pNode->GetAttribute( "MyAttribute" );

//Get a text value off this node if it has one
tstring l_strValue = l_pNode->GetTextValue();

//Find a child node from this node named MyHardToFindNode
CXMLNode* l_pNode2 = l_pNode->FindChildNode( "MyHardToFindNode" );

Et cetera, ad nauseum...

Is there something like this already in C# or am I heading for
"porting-ville"?

WTH
 
Hi WTH,

..Net has extensive support for XML in all kinds of ways, like XmlDocument, XmlNode, XmlAttribute and XPath queries.
 
Hi WTH,

.Net has extensive support for XML in all kinds of ways, like
XmlDocument, XmlNode, XmlAttribute and XPath queries.
Click to expand...

I was sure it did, but wanted to know if something like this:

XmlDocument doc = new XmlDocument();
doc.Load("sample.xml");
XmlNodeReader reader = new XmlNodeReader(doc);

Was what I was looking for or not...

Thanks,
 
I should add that your samples would translate to something like:

XmlDocument doc = new XmlDocument();

try
{
doc.LoadXml(in_strXML);
}
catch
{
MessageBox.Show("You gave me crappy XML", "XML be ungood");
return false;
}

XmlNamespaceManager nsmgr = new XmlNamespaceManager(doc.NameTable);

//load namespaces

string query = "//*";

XmlNodeList nodeList = doc.DocumentElement.SelectNodes(query, nsmgr);

int numberOfChildren = nodeList.Count;

XmlNode firstNode = doc.ElementNode.FirstChild;

XmlAttribute attribute = firstNode.Attributes["MyAttribute"];

string value = attribute.Value;

string query = "//MyHardToFindNode";

XmlNode hardToFindNode = doc.ElementNode.SelectSingleNode(query);


The code is untested and the xpath queries most likely not correct.
 
I partly answered this in a reply to my own post. I can't claim to havedone much work with XML, but so far I have not used XmlNodeReader.
 
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