Question

C# Xpath query help!!

Asked by: nazxul0101

Ok, i have been racking my brain on this for the past hour now..

i have an xml file

<?xml version="1.0" encoding="utf-8" ?>
<root>
  <Page name="Date Select">
    <Controls>
        <ListControl name="LoanType" type="listbox">
          <item value="LIS" />
       <item value="LPS" />
        </ListControl>
        <ListControl name="Selection" type="listbox">
          <item value="Select Suspend Status(s)" />
       <item value="Select All" />
       <item value="Select All but Completed" />
        </ListControl>
     <ListControl name="SuspendStatus" type="listbox">
       <item value="1st Call" />
       <item value="2nd Call" />
       <item value="Escalate" />
       <item value="Completed" />
       <item value="On Hold" />
       <item value="Hold for Map" />
     </ListControl>
     <ListControl name="Command" type="dropdown">
       <item value="Suspend Status Report" />
       <item value="Filter by Date" />
     </ListControl>
     </Controls>
   </Page>
</root>

and i am passing an xpath nodetest to my program..


     private void PutXMLData()
     {
       XmlDocument xmldoc = new XmlDocument();
       xmldoc.Load(Server.MapPath("pagedata.xml"));
       XmlNode root = xmldoc.DocumentElement;
       try
       {
           //-----this is where the issue lies!
             XmlNodeList xnodelist = root.SelectNodes("/root/Page/Controls/ListControl    [@name='LoanType']");
             foreach(XmlNode xnode in xnodelist)
          {
              lst1.Items.Add(xnode.ChildNodes[0].value);
          }
         
          } catch (System.Xml.XPath.XPathException ex) {          
          lblError.Text = ex.Message.ToString();
       }
        }

when i run this.. it gives me nothing in my listbox, but when when i replace xnode.ChildNodes[0].value with xnode.ChildNodes[0].name, then it gives me the string
"item" in the listbox..so i think i am off to a correct start.

But from looking at the XML file, i would think it would put the string
"LIS" and "LPS" in my listbox..which is what I want.

how would I do this with an Xpath nodetest?

Thanks!

nazxul



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Asked On
2003-03-28 at 13:18:52ID20566886
Tags

xpath

Topic

.NET

Participating Experts
2
Points
300
Comments
3

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Answers

 

by: naveenkohliPosted on 2003-03-28 at 13:59:15ID: 8228101

Use InnerText property instead of Value property. This will work if all your nodes are element types and your values are not set as attributes of these nodes.

 

by: mega_119Posted on 2003-03-30 at 23:02:46ID: 8236876

Here is the way I do it. I test it with your XML and it is working

XmlDocument xmldoc = new XmlDocument();
xmldoc.Load("pagedata.xml");
XmlNode root = xmldoc.DocumentElement;
try
{
                   
XmlNode xnode = root.SelectSingleNode("/root/Page/Controls/ListControl[@name='LoanType']");
for (int i=0;  i< xnode.ChildNodes.Count; i++)
{
MessageBox.Show(xnode.ChildNodes[i].Attributes.Item(0).Value.ToString() );
}

The XPath Query you specified is correct but your for loop is wrong. you need to loop through the childNodes and get the attribute value not the node value since in your case you are storing the data in the attributes not the nodes.


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by: nazxul0101Posted on 2003-03-31 at 11:15:42ID: 8240628

Great, thanks so much.. I didnt know i had to use item!
never would have thought of that..

i added 50, for the speed factor of your reply
thanks

20120131-EE-VQP-002

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