1

IDE: VS 2010, winforms,

I have a xml string 

string  xmlstr = "<string xmlns="http://example.com/proj1">True|Success</string>";

I am trying to select the <string> node to get its InnerText for subsequent parsing:

True|Success

using below code: 

XmlDocument xdoc = new XmlDocument();
xdoc.LoadXml(xmlstr);          
string message = xdoc.SelectSingleNode("string").InnerText;  //Here getting null Execption error.

can you tell me how to select this message from xml?

t3chb0t
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yogeshkmrsoni
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1 Answers1

4

You need to add a XmlNamespaceManager to be able to select the node:

XmlNode.SelectSingleNode Method (String, XmlNamespaceManager)

string xmlstr = "<string xmlns=\"http://example.com/proj1\">True|Success</string>";    
XmlDocument xdoc = new XmlDocument();
xdoc.LoadXml(xmlstr);

XmlNamespaceManager nsmgr = new XmlNamespaceManager(xdoc.NameTable);
nsmgr.AddNamespace("ab", "http://example.com/proj1");

XmlNode stringNode = xdoc.SelectSingleNode("//ab:string", nsmgr);
string message = stringNode.InnerText;

Besides your xml string is invalid in the example because it contains double quotes inside that are not escaped.

t3chb0t
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  • @Tomalak I've fixed the example. It wouldn't work (and it didn't) anyway with the suggested `XPath` because the node contains a namespace and a `XmlNamespaceManager` was necessary. – t3chb0t Dec 31 '14 at 08:50
  • ...an now it exactly matches the duplicate I've linked to. ;) – Tomalak Dec 31 '14 at 08:51
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    @Tomalak oh, sorry, I didn't mean to copy it. I actaully didn't realize that a namespace was used in the other question ;-] and solved it by myself... now I'm pround of me ;-] and I will feel ashamed that I missed this information in the duplicate hehe. – t3chb0t Dec 31 '14 at 08:55
  • Prefect explanation, thanks @t3chb0t – yogeshkmrsoni Dec 31 '14 at 09:22