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Get only child nodes of a parent node

I try to work with html agility pack. The basic works fine, only when I try to get the childnodes of a part, then i dont get all nodes with this the class 'dealer-offer' equal in which parentnode it will be.
Here is the code, that i use for it:
private void getListOfDiv(string html, string classname)
{
if (html != null)
{
var doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(html);
var divProduktkategorie = doc.DocumentNode.SelectSingleNode("//div[#class='" + classname + "']");
//this.txtHtmlCode.Text = divProduktkategorie.InnerHtml;
//return;
int i = 1;
foreach( var divAngebote in divProduktkategorie.SelectNodes("//div[#class='dealer-offer']"))
{
this.listBox1.Items.Add(i + ": " + classname);
this.txtHtmlCode.AppendText(divAngebote.OuterHtml);
i++;
}
}
}
Wenn I return the divProduktkategorie to the outputfild, then I get only the 3 positiones, which be under this singlenode, but wenn I start the loop, then I get every node with the class 'dealer-offer' and not only the 3 positions.
Where is my fault? I didn't find it by myself.
Thanks for helping

Try to get the 3 nodes with correct relative path and then just foreach them. Dont search them in divProduktkategorie references.
private void getListOfDiv(string html, string classname)
{
if (html != null)
{
var doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(html);
var divProduktkategorie = doc.DocumentNode.SelectSingleNode("//div[#class='" + classname + "']//div[#class='dealer-offer']");
//this.txtHtmlCode.Text = divProduktkategorie.InnerHtml;
//return;
int i = 1;
foreach( var divAngebote in divProduktkategorie)
{
this.listBox1.Items.Add(i + ": " + classname);
this.txtHtmlCode.AppendText(divAngebote.OuterHtml);
i++;
}
}
}

How to get comment or description field .resx file C#

I would like to get the description field in a .resx field using C#, At the moment I can get the "value" field using:
public static String f_str_textoRecurso(String p_str_archivo, String p_str_key)
{
System.Resources.ResourceManager t_rsm =
new System.Resources.ResourceManager("Resources." + p_str_archivo,
System.Reflection.Assembly.Load("App_GlobalResources"));
String t_str = t_rsm.GetString(p_str_key);
if (t_str != null)
{
if (p_str_key.Equals(""))
{
t_str = p_str_archivo.Remove(0, 4) + "." + p_str_key;
}
}
else
{
t_str = p_str_archivo.Remove(0, 4) + "." + p_str_key;
}
return t_str;
}
But I need also get comment. Any ideas?

Here you go:
public string ReadResourceComment(XmlDocument doc, string FieldName)
{
if (doc != null && !string.IsNullOrEmpty(doc.InnerXml))
{
return doc.SelectSingleNode("root/data[#name='" + FieldName + "']")["comment"].InnerText;
}
return string.Empty;
}
Here is how to use it:
Read your file ( It's XML document )
Pass which node you wanna read its comment
Example:
XmlDocument doc = new XmlDocument();
string filePath = HttpContext.Current.Server.MapPath("~/[FileName].resx");
doc.Load(filePath);
string comment = ReadResourceComment(doc, "[NodeName]");
// In your case, use ( ReadResourceComment(doc, "ot_desdecontrato");

How To Remove Last Node In XML? C#

I am trying to remove the last node from an XML file, but cannot find any good answers for doing this. Here is my code:
XmlReader x = XmlReader.Create(this.PathToSpecialFolder + #"\" + Application.CompanyName + #"\" + Application.ProductName + #"\Recent.xml");
int c = 0;
while (x.Read())
{
if (x.NodeType == XmlNodeType.Element && x.Name == "Path")
{
c++;
if (c <= 10)
{
MenuItem m = new MenuItem() { Header = x.ReadInnerXml() };
m.Click += delegate
{
};
openRecentMenuItem.Items.Add(m);
}
}
}
x.Close();
My XML node structure is as follows...
<RecentFiles>
<File>
<Path>Text Path</Path>
</File>
</RecentFiles>
In my situation, there will be ten nodes maximum, and each time a new one is added, the last must be removed.

You can try this
XmlDocument doc = new XmlDocument();
doc.Load(fileName);
XmlNodeList nodes = doc.SelectNodes("/RecentFiles/File");
nodes[nodes.Count].ParentNode.RemoveChild(nodes[nodes.Count]);
doc.Save(fileName);

It sounds like you want something like:
var doc = XDocument.Load(path);
var lastFile = doc.Descendants("File").LastOrDefault();
if (lastFile != null)
{
lastFile.Remove();
}
// Now save doc or whatever you want to do with it...

Reading specific text from XML files

I have created a small XML tool which gives me count of specific XML tags from multiple XML files.
The code for this is as follow:
public void SearchMultipleTags()
{
if (txtSearchTag.Text != "")
{
try
{
//string str = null;
//XmlNodeList nodelist;
string folderPath = textBox2.Text;
DirectoryInfo di = new DirectoryInfo(folderPath);
FileInfo[] rgFiles = di.GetFiles("*.xml");
foreach (FileInfo fi in rgFiles)
{
int i = 0;
XmlDocument xmldoc = new XmlDocument();
xmldoc.Load(fi.FullName);
//rtbox2.Text = fi.FullName.ToString();
foreach (XmlNode node in xmldoc.GetElementsByTagName(txtSearchTag.Text))
{
i = i + 1;
//
}
if (i > 0)
{
rtbox2.Text += DateTime.Now + "\n" + fi.FullName + " \nInstance: " + i.ToString() + "\n\n";
}
else
{
//MessageBox.Show("No Markup Found.");
}
//rtbox2.Text += fi.FullName + "instances: " + str.ToString();
}
}
catch (Exception)
{
MessageBox.Show("Invalid Path or Empty File name field.");
}
}
else
{
MessageBox.Show("Dont leave field blanks.");
}
}
This code returns me the tag counts in Multiple XML files which user wants.
Now the same I want to Search for particular text and its count present in XML files.
Can you suggest the code using XML classes.
Thanks and Regards,
Mayur Alaspure

Use LINQ2XML instead..It's simple and a complete replacement to othe XML API's
XElement doc = XElement.Load(fi.FullName);
//count of specific XML tags
int XmlTagCount=doc.Descendants().Elements(txtSearchTag.Text).Count();
//count particular text
int particularTextCount=doc.Descendants().Elements().Where(x=>x.Value=="text2search").Count();

System.Xml.XPath.
Xpath supports counting: count(//nodeName)
If you want to count nodes with specific text, try count(//*[text()='Hello'])
See How to get count number of SelectedNode with XPath in C#?
By the way, your function should probably look something more like this:
private int SearchMultipleTags(string searchTerm, string folderPath) { ...
//...
return i;
}

Try using XPath:
//var document = new XmlDocument();
int count = 0;
var nodes = document.SelectNodes(String.Format(#"//*[text()='{0}']", searchTxt));
if (nodes != null)
count = nodes.Count;

LINQ to XML without knowing the nodes

I have this LINQ query:
XNamespace ns = NAMESPACE;
var items = (from c in doc.Descendants(ns +"Item")
select new Item
{
Title = c.Element(ns + "ItemAttributes").Element(ns + "Title").Value,
MFR = c.Element(ns + "ItemAttributes").Element(ns + "Manufacturer").Value,
Offer = c.Element(ns + "Offers").Element(ns + "TotalOffers").Value,
Amazon = c.Element(ns + "Offer").Element(ns + "Merchant").Elements(ns + "MerchantId"),
LowPrice = Convert.ToDouble(c.Element(ns + "FormattedPrice").Value),
SalesRank = Convert.ToInt32(c.Element(ns +"SalesRank").Value),
ASIN = c.Element(ns + "ASIN").Value
}).ToList<Item>();
It works great expect for when a node is not present. For example it my not have a MFR or a sales rank. How can I make it so if it does not have the node in question, it gives me a default value or at the very doesn't make me try catch my whole query for one item.

As far as I'm aware LINQ to XML doesn't support this. However I ran into this same mess in a project I was working on and created this extension for XElement to allow it. Maybe it could work for you:
public static XElement ElementOrDummy(this XElement parentElement,
XName name,
bool ignoreCase)
{
XElement existingElement = null;
if (ignoreCase)
{
string sName = name.LocalName.ToLower();
foreach (var child in parentElement.Elements())
{
if (child.Name.LocalName.ToLower() == sName)
{
existingElement = child;
break;
}
}
}
else
existingElement = parentElement.Element(name);
if (existingElement == null)
existingElement = new XElement(name, string.Empty);
return existingElement;
}
Basically it just checks to see if the element exists and if it doesn't it returns one with the same name and an empty value.

You can use XElement Explicit Conversion, e.g.:
(int?)c.Element(ns +"SalesRank")
Reference: http://msdn.microsoft.com/en-us/library/bb340386.aspx

if the problem that the XElement exists, but the value is blank? i.e.
<Item>
<ItemAttributes>
<Manufacturer></Manufacturer>
</ItemAttributes>
</Item>
then you can use the string.IsNullOrEmpty function
XNamespace ns = NAMESPACE;
var items = (from c in doc.Descendants(ns +"Item")
select new Item
{
MFR = if (string.IsNullOrEmpty(c.Element(ns + "ItemAttributes").Element(ns + "Manufacturer").Value)) ? "default value here" : c.Element(ns + "ItemAttributes").Element(ns + "Manufacturer").Value,
// omitted for brevity
}).ToList<Item>();