HOW TO CHECK WHETHER A NODE EXIST?

[Siu]

Hi,
in my ASP.NET (C#) application I would like to check in advance if a node
exist: my code is as follow:

XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(XML_FILENAME);
XmlNode nodeApplication = xmlDoc.SelectSingleNode(xmlPath);

Before launching the instruction xmlDoc.SelectSingoleNode(xmlPath), how
would like to check if my xmlPath exists in the Xml document... it is a soft
of Exception Handling I suppose, but I need help, please.

Thank you in advance.

[Martin Honnen]

Siu wrote:

in my ASP.NET (C#) application I would like to check in advance if a node
exist: my code is as follow:

XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(XML_FILENAME);
XmlNode nodeApplication = xmlDoc.SelectSingleNode(xmlPath);

Before launching the instruction xmlDoc.SelectSingoleNode(xmlPath), how
would like to check if my xmlPath exists in the Xml document...

SelectSingleNode returns null if no node is found so you can test
if (nodeApplication != null)
to check whether the node exists. Of course that check is done after
SelectSingleNode is executed but I see no way to do such a check without
or before using the method.

--

Martin Honnen
http://JavaScript.FAQTs.com/