如何从C＃中具有相同节点名称的XML读取

Question

I have an XML document that looks like that:

<?xml version="1.0" encoding="UTF-8"?>
<teryt>
<catalog name="TERC" type="all" date="2015-01-01">
<row>
<col name="WOJ">02</col>
<col name="POW"/>
<col name="GMI"/>
<col name="RODZ"/>
<col name="NAZWA">DOLNOŚLĄSKIE</col>
<col name="NAZDOD">województwo</col>
<col name="STAN_NA">2015-01-01</col>
</row>
...
</row>
</catalog>
</teryt>

I have a code that works, but reads only the first col of every row :

System.Xml.XmlDocument rssDocument = new System.Xml.XmlDocument();
            rssDocument.Load("TERC.xml");

            System.Xml.XmlNodeList rssItems = rssDocument.SelectNodes("teryt/catalog/row");

            for (int i = 0; i < rssItems.Count; i++)
            {
                System.Xml.XmlNode rssNode;

                rssNode = rssItems.Item(i).SelectSingleNode("col");

                if (rssNode != null)
                {
                    Console.WriteLine(rssNode.InnerText);
                }
                else
                {
                    Console.WriteLine("");
                }
            } 

What do I have to do, if I want to read InnerText from every col in all rows ?

Answer 1

foreach (var row in rssDocument.SelectNodes("teryt/catalog/row"))
{    
    foreach (var col in row.SelectNodes("col"))
    {             
        Console.WriteLine(col.InnerText);    
    }
}

I didn't test this. This is to give you an idea of the solution. You are only selecting one col from every row because SelectNodes("col") does not give you the nodes inside "col". It gives you the nodes named "col".

Answer 2

Change

rssNode = rssItems.Item(i).SelectSingleNode("col");

TO

XmlNodeList list = rssItems.Item(i).SelectNodes("col");

foreach(XmlNode node in list)
{
    Console.WriteLine(node .InnerText);
}

The name of the method explain what is doing: SelectSingleNode . Selects a single node with this name. You need to select all nodes using SelectNodes method