using HtmlAgilityPack;

using System;

​

// An extension for HtmlAgilityPack to handle collapsing rowspan and colspan into unique cells to aid in parsing tables.

// See: https://www.nuget.org/packages/TableSpans.HtmlAgilityPack/

// GitHub: https://github.com/terryjbutler/HtmlAgilityPack.Extensions.TableSpans

namespace TableSpans.HtmlAgilityPack.Demo

{

    public class Program

    {

        const string _html = @"

<table>

    <tr>

        <td colspan='2'>A</td>

        <td rowspan='2'>B</td>

    </tr>

    <tr>

        <td>C</td>

        <td>D</td>

    </tr>

</table>";

​

        static void PrintArray(object[,] arr)

        {

            for (int y = 0; y < arr.GetLength(1); y++)

            {

                for (int x = 0; x < arr.GetLength(0); x++)

                {

                    Console.Write($"[{x}, {y}] \"{arr[x, y]}\" ");

                }

                Console.WriteLine();

            }

        }

​

        static void Main(string[] args)

        {

            var tableSpansExtension = new TableSpansExtension();

​

            var htmlDocument = new HtmlDocument();

​

            htmlDocument.LoadHtml(_html);

​

            var tableNode = htmlDocument.DocumentNode.SelectSingleNode(".//table");

            if (tableNode == null)

            {

                throw new InvalidOperationException("Could not find a table");

            }

​

            var newTableNode = tableSpansExtension.ProcessTable(tableNode);

​

            tableNode.ParentNode.ReplaceChild(newTableNode, tableNode);

            /*

            htmlTableNodeBefore:

            <table>

                <tr>

                    <td colspan='2'>A</td>

                    <td rowspan='2'>B</td>

                </tr>

                <tr>

                    <td>C</td>

                    <td>D</td>

                </tr>

            </table>

            */

            var htmlTableNodeBefore = tableNode.OuterHtml;

            Console.WriteLine("htmlTableNodeBefore:");

            Console.WriteLine(htmlTableNodeBefore);

            Console.WriteLine();

​

            /*

            htmlTableNodeAfter:

            <table>

                <tr>

                    <td>A</td>

                    <td>A</td>

                    <td>B</td>

                </tr>

                <tr>

                    <td>C</td>

                    <td>D</td>

                    <td>B</td>

                </tr>

            </table>

            */

            var htmlTableNodeAfter = newTableNode.OuterHtml;

            Console.WriteLine("htmlTableNodeAfter:");

            Console.WriteLine(htmlTableNodeAfter);

            Console.WriteLine();

​

            /*    

            arrBefore:

            [0, 0] "A" [1, 0] "B"

            [0, 1] "C" [1, 1] "D"

            */

            var arrBefore = tableSpansExtension.ToArray(tableNode);

            Console.WriteLine("arrBefore:");

            PrintArray(arrBefore);

            Console.WriteLine();

​

            /*

            arrAfter:

            [0, 0] "A" [1, 0] "A" [2, 0] "B"

            [0, 1] "C" [1, 1] "D" [2, 1] "B"

            */

            var arrAfter = tableSpansExtension.ToArray(newTableNode);

            Console.WriteLine("arrAfter:");

            PrintArray(arrAfter);

            Console.WriteLine();

​

            Console.ReadLine();

        }

    }

}