Traversing allows you to traverse HTML nodes. Property
name |
Description |
ChildNodes |
Gets all the children of the node. |
FirstChild |
Gets the The node. |
LastChild |
Gets the last child of the node. |
NextSibling |
Gets the HTML node immediately following this element. |
ParentNode |
Gets the parent of this node (for nodes that can have parents). |
Method
name |
Description |
Ancestors () |
Gets all the ancestor of the node. |
Ancestors (String) |
Gets ancestors with matching name. |
Ancestorsandself () |
Gets all anscestor nodes and the current node. |
Ancestorsandself (String) |
Gets all anscestor nodes and the current node with matching name. |
Descendantnodes |
Gets all descendant nodes for this node and each of the child nodes |
Descendantnodesandself |
Returns A collection of all descendant nodes the this element, in the document order |
Descendants () |
Gets all descendant nodes in enumerated list |
Descendants (String) |
Get all descendant nodes with matching name |
Descendantsandself () |
Returns A collection of all descendant nodes the this element, in the document order |
Descendantsandself (String) |
Gets all descendant nodes including this node |
Element |
Gets-generation child node matching name |
Elements |
Gets matching-generation child nodes matching name |
Public htmlnodecollection childnodes {get;}
Gets all child nodes of the node. ChildNodes is a member of the Htmlagilitypack.htmlnode .
The following example displays all child elements of a node.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var htmlBody = HtmlDoc.DocumentNode.SelectSingleNode ("//body");
Htmlnodecollection childnodes = htmlbody.childnodes;
foreach (var node in childnodes)
{
if node. NodeType = = htmlnodetype.element)
{
Console.WriteLine (node. outerhtml);
}
Public Htmlnode firstchild {get;}
Gets the first child node of the node. FirstChild is a member of the Htmlagilitypack.htmlnode .
The following example displays the first child node of a node.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var htmlnodes = htmlDoc.DocumentNode.SelectNodes ("//body");
var htmlBody = HtmlDoc.DocumentNode.SelectSingleNode ("//body");
Htmlnode firstchild = htmlbody.firstchild;
Console.WriteLine (firstchild.outerhtml);
Public Htmlnode LastChild {get;}
Gets the last child node of the node. LastChild is a member of the Htmlagilitypack.htmlnode .
The following example displays the last child node of a node.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var htmlnodes = htmlDoc.DocumentNode.SelectNodes ("//body");
var htmlBody = HtmlDoc.DocumentNode.SelectSingleNode ("//body");
Htmlnode lastchild = Htmlbody.lastchild;
Public Htmlnode NextSibling {get;}
Gets the HTML node immediately following this element. NextSibling is a member of the Htmlagilitypack.htmlnode .
The following example displays the next sibling node.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var node = htmlDoc.DocumentNode.SelectSingleNode ("//body/h1");
Htmlnode sibling = node. NextSibling;
while (sibling!= null)
{
if (sibling). NodeType = = htmlnodetype.element)
Console.WriteLine (sibling. outerhtml);
Sibling = sibling. NextSibling;
}
Public IEnumerable < Htmlnode > Ancestors ()
Gets all ancestors of the node. The Ancestors method is returned by a member of the htmlagilitypack.htmlnode :
Returns a collection of all ancestor nodes for this element.
The following example displays the names of all ancestors.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var node = htmlDoc.DocumentNode.SelectSingleNode ("//b");
foreach (var nnode in node. Ancestors ())
{
if (Nnode.nodetype = = htmlnodetype.element)
{
Console.WriteLine (nnode.name);
}
}
Public ienumerable Gets the ancestor with the matching name. The Ancestors method is a member parameter of the htmlagilitypack.htmlnode :
Name: The names of ancestor nodes. return:
Returns a collection of all ancestor nodes of this element with a matching name.
The following example displays the name of an ancestor with a matching name.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var node = htmlDoc.DocumentNode.SelectSingleNode ("//b");
foreach (var nnode in node. Ancestors ("Body")
{
if (Nnode.nodetype = = htmlnodetype.element)
{
Console.WriteLine ("Node Name:" + Nnode.name);
Console.WriteLine (Nnode.innertext);
}
Public ienumerable Gets all ancestors of the node and the node itself. The Ancestorsandself method is returned by a member of the htmlagilitypack.htmlnode :
Also returns a collection of all ancestor nodes and nodes themselves. Example
The following example displays the names of the selected node and all of its ancestors.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var node = htmlDoc.DocumentNode.SelectSingleNode ("//u");
foreach (var nnode in node. Ancestorsandself ())
{
if (Nnode.nodetype = = htmlnodetype.element)
{
Console.WriteLine ( nnode.name);
}
Public ienumerable Gets the ancestors and the node itself that have a matching name. The Ancestorsandself method is a member parameter of the htmlagilitypack.htmlnode :
Name: The names of ancestor nodes. return:
Returns a collection of names that match all ancestor nodes and the node itself.
The following example displays the name of the selected node and all ancestors with a matching name
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var node = htmlDoc.DocumentNode.SelectSingleNode ("//u");
foreach (var nnode in node. Ancestorsandself ("P"))
{
if (Nnode.nodetype = = htmlnodetype.element)
{
Console.WriteLine ( nnode.name);
}
Public ienumerable Gets all descendant nodes for this node and for each child node. The Descendantnodes method is a member parameter of the htmlagilitypack.htmlnode :
Levels: The depth level of the node to resolve in the HTML tree. return:
Returns a collection of all descendant nodes for this element. Example
The following example displays the names of all descendant nodes.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var node = htmlDoc.DocumentNode.SelectSingleNode ("//body");
foreach (var nnode in node. Descendantnodes ())
{
if (Nnode.nodetype = = htmlnodetype.element)
{
Console.WriteLine (nnode.name);
}
}
Public ienumerable Gets the collection of all descendant nodes for this element in document order. The Descendantnodesandself method is returned by a member of the htmlagilitypack.htmlnode :
Returns a collection of all descendant nodes for this element in document order.
The following example displays the name of all descendant nodes and the node itself.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var node = htmlDoc.DocumentNode.SelectSingleNode ("//body");
foreach (var nnode in node. Descendantnodesandself ())
{
if (Nnode.nodetype = = htmlnodetype.element)
{
Console.WriteLine ( nnode.name);
}
Public ienumerable Gets all descendant nodes in the enumerated list. Descendants is the member parameter of * Htmlagilitypack.htmlnode * :
Levels: The depth level of the node to resolve in the HTML tree. return:
Returns a collection of all descendant nodes for this element.
The following example displays the names of all descendant nodes.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var node = htmlDoc.DocumentNode.SelectSingleNode ("//body");
foreach (var nnode in node. Descendants ())
{
if (Nnode.nodetype = = htmlnodetype.element)
{
Console.WriteLine (nnode.name);
}
}
Public ienumerable Gets all descendant nodes that have a matching name. Descendants is a member parameter of the htmlagilitypack.htmlnode :
Name: the names of descendant nodes. return:
Returns a collection of all descendant nodes that have a name match.
The following example displays the names of all descendant nodes that have a matching name.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var node = htmlDoc.DocumentNode.SelectSingleNode ("//body");
foreach (var nnode in node. Descendants ("H2"))
{
if (Nnode.nodetype = = htmlnodetype.element)
{
Console.WriteLine (nnode.name) ;
}
}
Public ienumerable Gets the collection of all descendant nodes for this element in document order. The Descendantsandself method is returned by a member of the htmlagilitypack.htmlnode :
Returns a collection of all descendant nodes for this element in document order.
The following example displays the names of all descendants and the node itself.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var node = htmlDoc.DocumentNode.SelectSingleNode ("//body");
foreach (var nnode in node. Descendantsandself ())
{
if (Nnode.nodetype = = htmlnodetype.element)
{
Console.WriteLine ( nnode.name);
}
Public IEnumerable < Htmlnode > descendantsandself (string name) Gets all descendant nodes with a matching name and the node itself. Descendantsandself is a member parameter of the htmlagilitypack.htmlnode :
Name: the names of descendant nodes. return:
Returns a collection of all descendants with a matching name and the node itself.
The following example displays the name of all descendant nodes with a matching name and the node itself.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var node = htmlDoc.DocumentNode.SelectSingleNode ("//body");
foreach (var nnode in node. Descendantsandself ("H2"))
{
if (Nnode.nodetype = = htmlnodetype.element)
{
Console.WriteLine ( nnode.outerhtml);
}
Public Htmlnode Element (string name) Gets the first generation of child nodes with a matching name. The element method is a member parameter of the htmlagilitypack.htmlnode :
Name: The names of the child nodes. return:
Returns the first generation of child nodes with a matching name.
The following example displays the first generation of child nodes with a matching name.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var htmlBody = HtmlDoc.DocumentNode.SelectSingleNode ("//body");
var node = htmlbody.element ("P");
Console.WriteLine (node. outerHTML);
Public IEnumerable < Htmlnode > Elements (string name) Gets the first generation of child nodes with a matching name. The elements method is a member parameter of the htmlagilitypack.htmlnode :
Name: The names of the child nodes. return:
Returns a collection of first-generation child nodes with a matching name.
The following example displays the first generation of child nodes with a matching name.
var htmldoc = new HTMLDocument ();
htmldoc.loadhtml (HTML);
var htmlBody = HtmlDoc.DocumentNode.SelectSingleNode ("//body");
var nodes = htmlbody.elements ("H2");
foreach (var node in nodes)
{
if node. NodeType = = htmlnodetype.element)
{
Console.WriteLine (node. outerhtml);
}