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sorting XML

Posted on 2013-11-15
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Last Modified: 2013-11-30
Hi,

I would like to read the simple XML below.
<list version="1.0">
<meta>
  <type>resource-list</type>
</meta>
<resources start="0" count="4">
  <resource classname="Quote">
    <field name="name">Vincent</field>
    <field name="username">Hill</field>
    <field name="age">0.32</field>
    <field name="hair">black</field>
  </resource>
  <resource classname="Quote">
    <field name="name">John</field>
    <field name="username">Tedelon</field>
    <field name="age">27</field>
    <field name="hair">brown</field>
  </resource>
  <resource classname="Quote">
    <field name="name">Michael</field>
    <field name="username">Lopez</field>
    <field name="age">20</field>
    <field name="hair">red</field>
  </resource>
  <resource classname="Quote">
    <field name="name">Frank</field>
    <field name="username">Lopez</field>
    <field name="age">25</field>
    <field name="hair">black</field>
  </resource>
</resources>
</list>

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 and be able to find the record and the corresponding name with the max age.

How best can it be done with the minimum lines of code?

thanks!
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Question by:Mydeen Yussouf
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4 Comments
 
LVL 96

Expert Comment

by:Bob Learned
ID: 39653356
One possible approach would be load the XML into a System.Data.DataSet, and then use a filter to find the record that you need.
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LVL 1

Author Comment

by:Mydeen Yussouf
ID: 39653416
Thanks @TheLearnedOne, can you show me the code to do that for the above XML?
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LVL 96

Accepted Solution

by:
Bob Learned earned 500 total points
ID: 39653455
The appropriate method depends on where you are getting the XML.

Here is an example:

Loading a DataSet from XML
http://msdn.microsoft.com/en-us/library/fx29c3yd(v=vs.110).aspx

DataSet dataSet = new DataSet();
DataTable dataTable = new DataTable("table1");
dataTable.Columns.Add("col1", typeof(string));
dataSet.Tables.Add(dataTable);

string xmlData = "<XmlDS><table1><col1>Value1</col1></table1><table1><col1>Value2</col1></table1></XmlDS>";

System.IO.StringReader xmlSR = new System.IO.StringReader(xmlData);

dataSet.ReadXml(xmlSR, XmlReadMode.IgnoreSchema);

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Then you can use the DataSet visualizer to see the structure that is inferred from the XML.
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