I am working with a webBrowser in C# and I need to get the text from the link. The link is just a href without a class.
its like this
<div class="class1" title="myfirstClass">
<a href="link.php">text I want read in C#
<span class="order-level"></span>
Shouldn't it be something like this?
HtmlElementCollection theElementCollection = default(HtmlElementCollection);
theElementCollection = webBrowser1.Document.GetElementsByTagName("div");
foreach (HtmlElement curElement in theElementCollection)
{
if (curElement.GetAttribute("className").ToString() == "class1")
{
HtmlElementCollection childDivs = curElement.Children.GetElementsByName("a");
foreach (HtmlElement childElement in childDivs)
{
MessageBox.Show(childElement.InnerText);
}
}
}
This is how you get the element by tag name:
String elem = webBrowser1.Document.GetElementsByTagName("div");
And with this you should extract the value of the href:
var hrefLink = XElement.Parse(elem)
.Descendants("a")
.Select(x => x.Attribute("href").Value)
.FirstOrDefault();
If you have more then 1 "a" tag in it, you could also put in a foreach loop if that is what you want.
EDIT:
With XElement:
You can get the content including the outer node by calling element.ToString().
If you want to exclude the outer tag, you can call String.Concat(element.Nodes()).
To get innerHTML with HtmlAgilityPack:
Install HtmlAgilityPack from NuGet.
Use this code.
HtmlWeb web = new HtmlWeb();
HtmlDocument dc = web.Load("Your_Url");
var s = dc.DocumentNode.SelectSingleNode("//a[#name="a"]").InnerHtml;
I hope it helps!
Here I created the console app to extract the text of anchor.
static void Main(string[] args)
{
string input = "<div class=\"class1\" title=\"myfirstClass\"><a href=\"link.php\">text I want read in C#<span class=\"order-level\"></span>";
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(input);
foreach (HtmlNode item in doc.DocumentNode.Descendants("div"))
{
var link = item.Descendants("a").First();
var text = link.InnerText.Trim();
Console.Write(text);
}
Console.ReadKey();
}
Note this is htmlagilitypack question so tag the question properly.
Related
I have to replace the tag with HAP - HTML Agility Pack, in order to get a link without removing the link text. For e.g. in this case:
<p>This is the link</p>
I want to replace the link and the desired result should be:
<p>This is <span>the link<span></p>
I made this function, getting a html string as input.
public string CleanLinks(string input) {
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(input);
var links = doc.DocumentNode.SelectNodes("//a");
if (links == null) return input;
foreach (HtmlNode tb in links)
{
HtmlNode lbl = doc.CreateElement("span");
lbl.InnerHtml = tb.InnerHtml;
tb.ParentNode.ReplaceChild(lbl, tb);
}
return doc.DocumentNode.OuterHtml;
}
I am working with some html contents. The format of the HTML is like below.
<li>
<ul>
<li>Test1</li>
<li>Test2</li>
</ul>
Odd string 1
<ul>
<li>Test3</li>
<li>Test4</li>
</ul>
Odd string 2
<ul>
<li>Test5</li>
<li>Test6</li>
</ul>
<li>
There can be multiple "odd string" in html content. So I want all the "odd string" in array. Is there any easy way ? (I am using C# and HtmlAgilityPack)
Select ul elements and refer to next sibling node, which will be your text:
HtmlDocument html = new HtmlDocument();
html.Load(html_file);
var odds = from ul in html.DocumentNode.Descendants("ul")
let sibling = ul.NextSibling
where sibling != null &&
sibling.NodeType == HtmlNodeType.Text && // check if text node
!String.IsNullOrWhiteSpace(sibling.InnerHtml)
select sibling.InnerHtml.Trim();
something like
MatchCollection matches = Regex.Matches(HTMLString, "</ul>.*?<ul>", RegexOptions.SingleLine);
foreach (Match match in matches)
{
String oddstring = match.ToString().Replace("</ul>","").Replace("<ul>","");
}
Get all the ul descendants and check it the next sibling node is HtmlNodeType.Text and if is not empty:
List<string>oddStrings = new List<string>();
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
foreach (HtmlNode ul in doc.DocumentNode.Descendants("ul"))
{
HtmlNode nextSibling = ul.NextSibling;
if (nextSibling != null && nextSibling.NodeType == HtmlNodeType.Text)
{
string trimmedText = nextSibling.InnerText.Trim();
if (!String.IsNullOrEmpty(trimmedText))
{
oddStrings.Add(trimmedText);
}
}
}
Agility Pack can already query those texts
var nodes = doc.DocumentNode.SelectNodes("/html[1]/body[1]/li[1]/text()")
Use this XPATH:
//body/li[1]/text()
Html code:
<div>
<div>Name</div>
Date
</div>
How to use HtmlAgilityPack to get the Name and Date values?
HtmlDocument doc = new HtmlDocument();
doc.Load("file.htm");
foreach(HtmlNode div in doc.DocumentElement.SelectNodes("//div"])
{
string parent = div.InnerText; //this will give you Name
foreach (HtmlNode child in div.ChildNodes)
{
string childDiv = child.InnerText; //this will give you the child
}
}
var doc = new HtmlDocument();
doc.LoadHtml("<div><div>Name</div>Date</div>");
var nodes = doc.DocumentNode
.DescendantNodes()
.Where(n => n.NodeType == HtmlNodeType.Text);
foreach (var node in nodes)
{
var value = node.InnerText;
}
Hard-coded:
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml("<div><div>Name</div>Date</div>");
Console.WriteLine(((HtmlTextNode)doc.DocumentNode.ChildNodes[0].ChildNodes[0]).Text);
Console.WriteLine(((HtmlTextNode)doc.DocumentNode.ChildNodes[1]).Text);
If what you're looking for, is all the text nodes (as in Kevin Babcock's answer!). You have to remember that text in Xml (and with HtmlAgility) are nodes.
I'm trying to extract the content inside div tag with id job_title1 in a html page. I'm using htmlagilitypack to fetch the data. Here is my code
var obj = new HtmlWeb();
var document = obj.Load("url of website ");
var bold = document.DocumentNode.SelectNodes("//div[#class='job_title1']");
foreach (var i in document.DocumentNode.SelectNodes("//div[#class='job_title1']"))
{
Response.Write(i.InnerHtml);
}
When i tried to run this code i'm getting error at foreach saying the Object reference not set to an instance of an object. Please help me solving this.
You said "div tag with id job_title1", shouldn't the xpath be:
document.DocumentNode.SelectNodes("//div[#id='job_title1']")
check if null like this:
var nodes = document.DocumentNode.SelectNodes("//div[#class='job_title1']");
if(nodes != null)
foreach (var i in document.DocumentNode.SelectNodes("//div[#class='job_title1']"
...
Edit: Use \" instead ':
var obj = new HtmlWeb();
var document = obj.Load("url of website ");
var bold = document.DocumentNode.SelectNodes("//div[#class=\"job_title1\"]");
if(bold!= null)
foreach (var i in bold)
{
Response.Write(i.InnerHtml);
}
Input
<html><body><p>foo <a href='http://www.example.com'>bar</a> baz</p></body></html>
Output
foo
bar
baz
I know of htmldoc.DocumentNode.InnerText, but it will give foobarbaz - I want to get each text, not all at a time.
XPATH is your friend :)
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(#"<html><body><p>foo <a href='http://www.example.com'>bar</a> baz</p></body></html>");
foreach(HtmlNode node in doc.DocumentNode.SelectNodes("//text()"))
{
Console.WriteLine("text=" + node.InnerText);
}
var root = doc.DocumentNode;
var sb = new StringBuilder();
foreach (var node in root.DescendantNodesAndSelf())
{
if (!node.HasChildNodes)
{
string text = node.InnerText;
if (!string.IsNullOrEmpty(text))
sb.AppendLine(text.Trim());
}
}
This does what you need, but I am not sure if this is the best way. Maybe you should iterate through something other than DescendantNodesAndSelf for optimal performance.
I was in the need of a solution that extracts all text but discards the content of script and style tags. I could not find it anywhere, but I came up with the following which suits my own needs:
StringBuilder sb = new StringBuilder();
IEnumerable<HtmlNode> nodes = doc.DocumentNode.Descendants().Where( n =>
n.NodeType == HtmlNodeType.Text &&
n.ParentNode.Name != "script" &&
n.ParentNode.Name != "style");
foreach (HtmlNode node in nodes) {
Console.WriteLine(node.InnerText);
var pageContent = "{html content goes here}";
var pageDoc = new HtmlDocument();
pageDoc.LoadHtml(pageContent);
var pageText = pageDoc.DocumentNode.InnerText;
The specified example for html content:
<html><body><p>foo <a href='http://www.example.com'>bar</a> baz</p></body></html>
will produce the following output:
foo bar baz
public string html2text(string html) {
HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();
doc.LoadHtml(#"<html><body>" + html + "</body></html>");
return doc.DocumentNode.SelectSingleNode("//body").InnerText;
}
This workaround is based on Html Agility Pack. You can also install it via NuGet (package name: HtmlAgilityPack).
https://github.com/jamietre/CsQuery
have you tried CsQuery? Though not being maintained actively - it's still my favorite for parsing HTML to Text. Here's a one liner of how simple it is to get the Text from HTML.
var text = CQ.CreateDocument(htmlText).Text();
Here's a complete console application:
using System;
using CsQuery;
public class Program
{
public static void Main()
{
var html = "<div><h1>Hello World <p> some text inside h1 tag under p tag </p> </h1></div>";
var text = CQ.CreateDocument(html).Text();
Console.WriteLine(text); // Output: Hello World some text inside h1 tag under p tag
}
}
I understand that OP has asked for HtmlAgilityPack only but CsQuery is another unpopular and one of the best solutions I've found and wanted to share if someone finds this helpful. Cheers!
I just changed and fixed some people's answers to work better:
var document = new HtmlDocument();
document.LoadHtml(result);
var sb = new StringBuilder();
foreach (var node in document.DocumentNode.DescendantsAndSelf())
{
if (!node.HasChildNodes && node.Name == "#text" && node.ParentNode.Name != "script" && node.ParentNode.Name != "style")
{
string text = node.InnerText?.Trim();
if (text.HasValue() && !text.StartsWith('<') && !text.EndsWith('>'))
sb.AppendLine(System.Web.HttpUtility.HtmlDecode(text.Trim()));
}
}