Looping through attributes

[Cheryl]

I need a sample that shows how can loop through the
attributes and display the data.(.net / c#)

<?xml version="1.0" encoding="UTF-8"?>
<riders>
<rider>
<prename id=>Lance</prename>
<surname>Armstrong</surname>
</rider>
<rider>
<prename>Roberto</prename>
<surname>Heras</surname>
</rider>
<rider>
<prename>George</prename>
<surname>Hincapie</surname>
</rider>
<Position>
<Element Operation="insert" remark="Test Add Remark1"/>
<Element Operation="insert" remark="Test Add Remark2"/>
</Position>
</riders>

Code:

XmlElement child2 = child.SelectSingleNode("ns:Element");
oper1 = child2.GetAttribute("Operation");

int i;
for ( i = 1; i < 3; i++)
{
if (oper1 == "insert")
{
remk = child2.GetAttribute("Child");
MessageBox.Show(remk);
}
}

This works fine but it only give me the first remark, it never goes to
the second remark. Also I have hard coded "< 3", but I don't know the
number of remarks will be in the document.

[Martin Honnen]

Cheryl wrote:

I need a sample that shows how can loop through the
attributes and display the data.(.net / c#)

<?xml version="1.0" encoding="UTF-8"?>
<riders>
<rider>
<prename id=>Lance</prename>
<surname>Armstrong</surname>
</rider>
<rider>
<prename>Roberto</prename>
<surname>Heras</surname>
</rider>
<rider>
<prename>George</prename>
<surname>Hincapie</surname>
</rider>
<Position>
<Element Operation="insert" remark="Test Add Remark1"/>
<Element Operation="insert" remark="Test Add Remark2"/>
</Position>
</riders>

Code:

XmlElement child2 = child.SelectSingleNode("ns:Element");
oper1 = child2.GetAttribute("Operation");

int i;
for ( i = 1; i < 3; i++)
{
if (oper1 == "insert")
{
remk = child2.GetAttribute("Child");
MessageBox.Show(remk);
}
}

This works fine but it only give me the first remark, it never goes to
the second remark. Also I have hard coded "< 3", but I don't know the
number of remarks will be in the document.

Here is an example that loops through all <Element> elements that have
the id attribute Operation set to "insert" and then outputs the value of
the attribute named remark:

using System;
using System.Xml;

public class Test20040509 {
public static void Main (string[] args) {
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.Load(@"test20040509.xml");
XmlNodeList nodeList = xmlDocument.SelectNodes(
"/riders/Position/Element[@Operation = 'insert']");
foreach (XmlNode node in nodeList) {
XmlElement element = node as XmlElement;
if (element != null) {
Console.WriteLine(element.GetAttribute("remark"));
}
}
}
}
--

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

[cheryl hawes]

XmlNodeList nodeList = xmlDocument.SelectNodes(
"/riders/Position/Element[@Operation = 'insert']")

Would the above nodeList change if my Xml looked as following:
<?xml version="1.0" encoding="UTF-8"?>

<UpdateRQ>
<riders>
<rider>
<prename>Lance</prename>
<surname>Armstrong</surname>
</rider>
<rider>
<prename>Roberto</prename>
<surname>Heras</surname>
</rider>
<rider>
<prename>George</prename>
<surname>Hincapie</surname>
</rider>
</riders>
<Position>
<Element Operation="insert" remark="Test Add Remark1"/>
<Element Operation="insert" remark="Test Add Remark2"/>
</Position>
</UpdateRQ>

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[Kirk Allen Evans [MSFT]]

Yes. The XPath expression included in your sample code looks for the very
first element in the document calles "riders", having a child element
"Position", having a child element named "Element", that has an attribute
named "Operation" with a value of "insert". If all of these conditions are
not met, then nothing will be matched... hence nothing is returned. Your
first element is now "UpdateRQ", so the XPath expression will not match
anything in your structure. Add the UpdateRQ element into your XPath
statement:

XmlNodeList nodeList =
xmlDocument.SelectNodes("/UpdateRQ/riders/Position/Element[@Operation =
'insert']")

--
Kirk Allen Evans
blogs.msdn.com/kaevans

-- This posting is provided "AS IS" with no warranties, and confers no
rights.

"cheryl hawes" <ch********@aol.com> wrote in message
news:%2***************@TK2MSFTNGP11.phx.gbl...

XmlNodeList nodeList = xmlDocument.SelectNodes(
"/riders/Position/Element[@Operation = 'insert']")

Would the above nodeList change if my Xml looked as following:
<?xml version="1.0" encoding="UTF-8"?>

<UpdateRQ>
<riders>
<rider>
<prename>Lance</prename>
<surname>Armstrong</surname>
</rider>
<rider>
<prename>Roberto</prename>
<surname>Heras</surname>
</rider>
<rider>
<prename>George</prename>
<surname>Hincapie</surname>
</rider>
</riders>
<Position>
<Element Operation="insert" remark="Test Add Remark1"/>
<Element Operation="insert" remark="Test Add Remark2"/>
</Position>
</UpdateRQ>

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