Develop Reference

Selectnodes only get the first node

I have an XML file looking like this:
<data xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<row>
<Alert>warning</Alert>
<Alert2>warning</Alert2>
</row>
</data>
When I use the code below I only get the "Alert"-node. But I wan't "Alert2" as well (and so on...). What am I missing here?
using (XmlReader reader = cmd.ExecuteXmlReader())
{
string xmlFile = "";
while (reader.Read())
{
xmlFile = reader.ReadOuterXml();
}
var doc = new XmlDocument();
doc.LoadXml(xmlFile);
var nodes = doc.SelectNodes("data/row");
if (nodes == null) return columns;
var i = 0;
foreach (XmlNode node in nodes)
{
var column = node.ChildNodes[i].Name;
columns.Add(column);
i++;
}
return columns;
}

Change your loop to the equivalent of:
var doc = new XmlDocument();
doc.LoadXml(xml);
var nodes = doc.SelectNodes("data/row");
int i = 0;
foreach (XmlNode node in nodes)
{
foreach (var child in node.ChildNodes)
{
var element = (XmlElement)child;
string nodeName = element.Name;
string value = element.InnerXml;
i++;
}
}

Not reading two values from XML nodes

I have this XML
<?xml version="1.0" encoding="UTF-8"?>
<nfeProc xmlns="http://www.portalfiscal.inf.br/nfe" versao="2.00">-<NFe>-<infNFe versao="2.00" Id="NFe35130649196462000115550010000036141000025758">
<ide>
<natOp>DEVOL. ARMAZENAGEM</natOp>
</ide>
<total>
<ICMSTot>
<vNF>43778.00</vNF>
</ICMSTot>
</total>
I read with this C# code :
private void leerarquivoN(string caminx)
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(caminx);
XmlNodeList ml = xmlDoc.GetElementsByTagName("*");
XmlNode primer = xmlDoc.DocumentElement;
tipo_arq = primer.Name;
if (xmlDoc.DocumentElement.Name == "nfeProc")
{ foreach (XmlNode xn in ml)
{
if (xn.Name == "infNFe")
{
chave_nota = xn.Attributes["Id"].Value;
versao = xn.Attributes["versao"].Value;
lblChaveNota.Text = chave_nota; lblversao.Text = versao;
}
}
XmlNodeList xnList = xmlDoc.GetElementsByTagName("ide");
foreach (XmlNode xn in xnList)
{
if (xn.Name == "ide")
{
if (xn["nNF"] != null)
{ nnota = (xn["nNF"]).InnerText; label8.Text = nnota; }
if (xn["dEmi"] != null)
{ ndata = (xn["dEmi"]).InnerText; lblData.Text = ndata;}
if (xn["natOP"] != null)
{ natop = (xn["natOP"]).InnerText; lblNAtop.Text = natop ; }
}
}
XmlNodeList xnList2 = xmlDoc.GetElementsByTagName("emit");
foreach (XmlNode xn in xnList2)
{
{ if (xn["CNPJ"] != null)
{ ncnpj = (xn["CNPJ"]).InnerText; lblCNPJ.Text = ncnpj; }
}
}
XmlNodeList xnList3 = xmlDoc.GetElementsByTagName("total");
foreach (XmlNode xn in xnList3)
{
{
if (xn["vNF"] != null)
{ ntotal = (xn["vNF"]).InnerText; lblvNF.Text = ntotal ; }
}
}
}
I can not read VNF and natOP , what i m doing wrong???
Thanks

The code you are using just gets the main nodes. To get the children associated with each node (natOp and vNF), you have to rely on a different code (MSDN reference). Sample for natOp (inside the xnList for loop):
if (xn.HasChildNodes)
{
for (int i=0; i<xn.ChildNodes.Count; i++)
{
//xn.ChildNodes[i].InnerText -> what you are after
}
}

How add TreeNode to TreeNodeCollection with more than name and text in C#

I want to add to my treeview some nodes with childs, but have a problem how to add nodes with for example ToolTipText. I want do it with TreeNodeCollection.
It is possible or how could I change my code?
Here is my code where all nodes are root nodes.
protected void CreateTreeView(TreeNodeCollection parentNode, int parentID, DataTable mytab)
{
foreach (DataRow dta in mytab.Rows)
{
if (Convert.ToInt32(dta["parent_id"]) == parentID)
{
String key = dta["id"].ToString();
String text = dta["host_ip"].ToString();
TreeNode tn = new TreeNode();
tn.Name = dta["id"].ToString();
tn.Text = dta["host_ip"].ToString();
tn.ToolTipText = dta["description"].ToString();
parentNode.Add(tn);
TreeNodeCollection newParentNode = parentNode;
CreateTreeView(newParentNode, Convert.ToInt32(dta["id"]), mytab);
}
}
}
Calling code:
CreateTreeView(treeView1.Nodes, 0, dt);

If someone had with this problem here is an example:
void add_tooltiptext(DataTable mytab)
{
try
{
foreach (DataRow nodes in mytab.Rows)
{
TreeNode[] found = treeView1.Nodes.Find(nodes["id"].ToString(), true);
for (int i = 0; i < found.Length; i++)
{
treeView1.SelectedNode = found[i];
treeView1.SelectedNode.ToolTipText = nodes["description"].ToString();
}
}
}
catch
{ }
}

What's wrong in my dynamical ToolStripMenu script?

Why duplicate code?
I read on a rampage in the xml data! and installing a toolstripmenu! but for some reason every so often put into the xml amennyi item is in! Why?
here is the code:
try
{
XmlDocument xml = new XmlDocument();
xml.Load("allomasok.xml");
XmlNodeList xnList = xml.SelectNodes("/radiok/allomas");
mennyi =int.Parse(xnList.Count.ToString());
foreach (XmlNode xn in xnList)
{
string radioNEV = xn["neve"].InnerText;
string radioURL = xn["url"].InnerText;
//int i = mennyi;
ToolStripMenuItem[] items = new ToolStripMenuItem[mennyi];
for (int i = 0; i < items.Length; i++)
{
items[i] = new ToolStripMenuItem();
items[i].Name = "mentett" + i.ToString();
items[i].Tag = radioURL;
items[i].Text = radioNEV;
items[i].Click += new EventHandler(MenuItemClickHandler);
}
sajátokToolStripMenuItem.DropDownItems.AddRange(items);
}
}
catch
{
MessageBox.Show("Hiba", "NetRadioPlayer");
}
finally
{
MessageBox.Show("Ennyi mentett állomás van: " + mennyi);
}
Thanks.

You have too many loops, I think. Try this:
try
{
XmlDocument xml = new XmlDocument();
xml.Load("allomasok.xml");
XmlNodeList xnList = xml.SelectNodes("/radiok/allomas");
ToolStripMenuItem mi;
int i;
foreach (XmlNode xn in xnList)
{
string radioNEV = xn["neve"].InnerText;
string radioURL = xn["url"].InnerText;
mi = new ToolStripMenuItem();
mi.Name = "mentett" + i++.ToString();
mi.Tag = radioURL;
mi.Text = radioNEV;
mi.Click += new EventHandler(MenuItemClickHandler);
sajátokToolStripMenuItem.DropDownItems.Add(mi);
}
}
catch
{
MessageBox.Show("Hiba", "NetRadioPlayer");
}
finally
{
MessageBox.Show("Ennyi mentett állomás van: " + mennyi);
}
If that doesn't help I'm sorry, I don't understand the question.

Xml node reading for each loop

I am trying to loop through an Xml file and display the value for account in a message.
XmlNodeList nodeList = testDoc.SelectNodes("/details/row/var");
foreach (XmlNode no in nodeList)
{
XmlNode node = testDoc.SelectSingleNode("/details/row/var[#name='account']");
test.actual = node.Attributes["value"].Value;
MessageBox.Show(test.account);
}
The message box is currently displaying the first record repeatidly, how can I get to the next record?
Thanks for your input in advance.

You are repeatedly assigning node with the same element from testDoc. It is not clear what test.account is (perhaps a mistype for test.actual)?
no is the variable which will iterate the contents of nodeList - I imagine you intended to use that.
EDIT following edit of OP
Now you've shown us what nodeList is, I suspect you want to do something like this instead :
XmlNodeList nodeList = testDoc.SelectNodes("/details/row/var[#name='account']");
foreach (XmlNode no in nodeList)
{
test.actual = no.Attributes["value"].Value;
...

XmlDocument doc = new XmlDocument();
doc.Load("d:\\test.xml");
XmlNodeList node = doc.GetElementsByTagName("w:r");
foreach (XmlNode xn in node)
{
try
{
if (xn["w:t"].InnerText != null)
{
if (xn["w:t"].InnerText == "#")
{
string placeHolder = xn["w:t"].InnerText;
foreach (XmlNode a in node)
{
if (a["w:t"].InnerText != "#")
{
string placeHolder1 = a["w:t"].InnerText;
}
}
}
}
}
catch (Exception e)
{
Console.Write(e);
}
}

Here is the sample for parent node value to get information of the child nodes.here i am using the ReportItems ParentNode and Print only image child nodes.
xmldoc.Load(rdlFile);
StringBuilder sb=new StringBuilder();
XmlNode node = xmldoc.GetElementsByTagName("ReportItems")[0];
XmlNodeList list = node.ChildNodes;
atributes=new string[node.ChildNodes.Count];
int l = 0;
for (int j = 0; j < node.ChildNodes.Count; j++)
{
if (list[j].Name == "Image")
{
XmlAttributeCollection att = list[j].Attributes;
atributes[l] = att[0].Value.ToUpper();
}
l++;
}
for (int i = 0; i < node.ChildNodes.Count; i++)
{
if (searchText.Text.ToUpper() == atributes[i])
{
XmlNodeList lastlist = node.ChildNodes;
XmlNodeList endlist = lastlist[i].ChildNodes;
for (int k = 0; k < endlist.Count; k++)
{
sb.Append(endlist[k].Name+" - "+ endlist[k].InnerText);
sb.Append("\n"+"\n");
}
}
}
let me know if you have doubt..

Try this,
XmlDocument xdoc = new XDocument();
xdoc.Load("*/File/*");
string xmlcontents = xdoc.InnerXml;
var xpath = "(/details/row/var[#name='account'])";
XmlNodeList lists = xdoc.DocumentElement.SelectNodes(xpath);
foreach (XmlNode _node in lists)
{
string _nodeValue = _node.InnerText;
MessageBox.Show(_nodeValue);
}

Try the following:
//Create an xml reader;
XmlDocument _xmlDocument = new XmlDocument();
_xmlDocument.Load(/*File Name here*/);
//Select the element with in the xml you wish to extract;
XmlNodeList _nodeList = _xmlDocument.SelectNodes("/details/row/var[#name='account']");
//Display the values in the node list to the screen;
foreach (XmlNode _node in _nodeList)
{
String _nodeValue = _node.InnerText.ToString();
MessageBox.Show(_nodeValue.ToString());
}

I'm not 100% sure, but you may need to use recursion. If not, it should just look like this:
XmlDocument doc = //etc..
foreach(XmlNode node in doc.ChildNodes)
{
if(node.Name == "account")
{
MessageBox.Show(node.Value);
}
}

You shouldn't spend time with reading the xml node by node. Try Deserialization: