Z.Example.ReplaceChild | C# Online Compiler

Z.Example.ReplaceChild by ZZZ Projects

// @nuget: HtmlAgilityPack

using System;
using System.Xml;
using HtmlAgilityPack;
					
public class Program
{
	public static void Main()
	{
		var html =
        @"<body>
            <h1>This is <b>bold</b> heading</h1>
            <p>This is <u>underlined</u> paragraph</p>
        </body>";

        var htmlDoc = new HtmlDocument();
        htmlDoc.LoadHtml(html);

        var htmlBody = htmlDoc.DocumentNode.SelectSingleNode("//body");
		
		DisplayNode(htmlBody);

        HtmlNode oldChild = htmlBody.ChildNodes[1];
		
		HtmlNode newChild = HtmlNode.CreateNode("<h2> This is h2 new child heading</h2>");
		
		htmlBody.ReplaceChild(newChild, oldChild);

        Console.WriteLine("\n****After child node replaced****\n");

        DisplayNode(htmlBody);		
	}
	
	static void DisplayNode(HtmlNode node)
    {
		Console.WriteLine("Node Name: " + node.Name);
		
		Console.Write("\n" + node.Name + " children:\n");
		
		DisplayChildNodes(node);
	}
	
	static void DisplayChildNodes(HtmlNode nodeElement)
    {
        HtmlNodeCollection childNodes = nodeElement.ChildNodes;
		
		if (childNodes.Count == 0)
		{
			Console.WriteLine(nodeElement.Name + " has no children");
		}
		else
		{
        	foreach (var node in childNodes)
        	{
            	if (node.NodeType == HtmlNodeType.Element)
				{
					Console.WriteLine(node.OuterHtml);
				}
        	}
		}
    }
}

​x
 
// @nuget: HtmlAgilityPack
​
using System;
using System.Xml;
using HtmlAgilityPack;
                    
public class Program
{
    public static void Main()
    {
        var html =
        @"<body>
            <h1>This is <b>bold</b> heading</h1>
            <p>This is <u>underlined</u> paragraph</p>
        </body>";
​
        var htmlDoc = new HtmlDocument();
        htmlDoc.LoadHtml(html);
​
        var htmlBody = htmlDoc.DocumentNode.SelectSingleNode("//body");
        
        DisplayNode(htmlBody);
​
        HtmlNode oldChild = htmlBody.ChildNodes[1];
        
        HtmlNode newChild = HtmlNode.CreateNode("<h2> This is h2 new child heading</h2>");
        
        htmlBody.ReplaceChild(newChild, oldChild);
​
        Console.WriteLine("\n****After child node replaced****\n");
​
        DisplayNode(htmlBody);      
    }
    
    static void DisplayNode(HtmlNode node)
    {
        Console.WriteLine("Node Name: " + node.Name);
        
        Console.Write("\n" + node.Name + " children:\n");
        
        DisplayChildNodes(node);
    }
    
    static void DisplayChildNodes(HtmlNode nodeElement)
    {
        HtmlNodeCollection childNodes = nodeElement.ChildNodes;
        
        if (childNodes.Count == 0)
        {
            Console.WriteLine(nodeElement.Name + " has no children");
        }
        else
        {
            foreach (var node in childNodes)
            {
                if (node.NodeType == HtmlNodeType.Element)
                {
                    Console.WriteLine(node.OuterHtml);
                }
            }
        }
    }
}

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